The method of regulating the transmission power of the earth stations of satellite communication network, the power control unit transmitting earth station and the driver control signal

 

The invention relates to electrical engineering and can be used in satellite communication systems. The technical result is to increase the noise immunity, reliability, and throughput of multichannel communication systems. To do this, carry out the adjustment of the transmission power of the earth station, using as the test signal information signal, and generate the control action depending on the quality of the corresponding channel. The control signal is generated due to the delay of the information signal using a delay line and the sum modulo two and relayed from a satellite station of the same information signal in the adder. Output driver control signal acts on the control input of the power amplifier of the transmitter. 3 S. and 1 C.p. f-crystals, 16 ill.

The proposed group of inventions combined to form a single inventive concept relates to the field of radio and designed for satellite communication systems. The present invention can also be used in radio, radio relay, and tropospheric communication. The proposed technical solutions extend the Arsenal of tools for this purpose.

And the TBE regulation of electric power transmission to the ground station satellite communication system (see patent JP 6052882, CL 5 H 04 7/155, 1997), namely that the power control transmitters each earth station is on the comparison of the levels Regionalliga signal, formed on the satellite station, and returned the satellite test signal transmitted to each of the earth stations via a satellite communication station.

The disadvantages of this method are the low immunity of the network, due to the fact that in the presence of external interference on one of the earth stations must increase the power of its transmitter. This, in turn, leads to the violation of other lines formed by the stations of a satellite communication due to the effect of suppressing a strong signal weaker. The known method also has relatively low bandwidth satellite communication network, caused by the necessity of placing the satellite special beacon for the network and allocating a frequency resource for him and for the test signals to ground stations.

Also there is a method of power control earth stations satellite communication network, implemented in the device to adjust the transmission power in ground station satellite communication system (see JP patent 6066719, grade 5 by results of the comparison levels Regionalliga and companion returned the pilot signal and the test signal, transmitted by the earth station to the satellite separately or together.

The disadvantages of this method are relatively low noise and bandwidth, as well as significant differences between signal levels at the input station of a satellite communication due to the potential fluctuations of the signals of the beacon satellite communication, leading to different levels of signal in the receiving channel of each of the earth stations. In addition, the known method requires additional frequency resource for transmitting earth stations of the pilot signals.

You know the power control unit transmission (see JP patent 5076211, CL 5 H 04 1/04, 1996), consisting of two branches, one of which includes a detector, two amplifiers and a diagram of the gain control is the feedback gain, and the second consisting of two detectors, amplitude limiter, amplifier and comparator, designed to eliminate distortion when exceeding the level of the input signal over a given threshold.

A disadvantage of the known device is the low immunity due to the fact that signal processing of amplitude modulation, and set the minimum transmit power is determined not only by the level of the input signal, start at the ground station of a satellite communication system (see patent JP 6052882, CL 5 H 04 7/155, 1997), including the first receiver rationally signal from the space station, the signal transmitter to the space station, a second receiver that receives a response signal from a transmitter, the device controlling the output level of the signal containing the control unit of the deviation of the frequency response, the error correction block and level control.

The disadvantages of this device are relative low precision adjustment of power control transmit earth stations on one of the test signals do not always adequately related to the quality of information signals, as well as the relatively low network bandwidth, associated with the fact that the formation of a special test signals requires additional resource.

Known driver control signal (see USSR author's certificate 4641950, CL 5H 03 G 3/20, 1991. The automatic gain control), consisting of an amplifier with an adjustable gain, the amplitude detector, switch, two-threshold comparator, and a reversible counter, decoder, unit conversion code in a unitary block of optocouplers, clock, variable block resistor block transistor and the known device is relatively low reliability, due to the additional introduction of a large number of items, and the relatively low immunity, associated with the fact that even when there is no signal at the output of the device is the amplification of noise.

Also known driver control signal (see USSR author's certificate 4677184, CL 5 H 03 G 3/20, 1991. The automatic gain control), consisting of an amplifier with an adjustable gain, the amplitude detector, discriminator, clock, two amplitude selectors, delay lines, key, comparator, and a reversible counter.

The disadvantages of this device are the low accuracy of adjustment relative to the information signal, and a relatively low immunity associated with increased noise when no signal is detected at the input device.

The closest in technical essence to the present invention is a method of power control ground stations, implemented in the system power control earth stations satellite communication network (see patent US 4910792, CL N 04 7/185, 1997), in which the satellite communications network includes at least one satellite station that relays signals from earth stations, and not the AI generate a test signal and transmits it to the satellite station, where measure and memorize the level of a received signal from the base station, and take him for a reference. At each earth station generate test signals and transmit the generated test signals to the satellite station. On satellite stations measure the level of the received test signal and betray each earth station two (and their support) fixed on the satellite station level test signal. The corresponding earth station take them and compare each earth station levels own and the reference test signal, generate a control signal that regulates the capacity of each earth station up until the specified difference between the levels of the private and the reference signal becomes equal to zero.

However, the prototype method has disadvantages: - relatively high probability of deterioration of communication quality when the load changes on the input of the satellite station. This is because the increase in the input load leads to a redistribution of output power of the transmitting satellite station between the emitted signals, and therefore, the transmit power satellite stations attributable to each ground station is reduced, which degrades the quality of communication between C the new connection; - relatively low noise and reliable satellite communications network. This is because under the influence of interferences on a test signal of a base station or failure of the network may stop working, and control of the transmit power of earth stations on one of the test signals spaced in frequency or time from the information signals are not always adequately related to the quality of information signals; - relatively low bandwidth, associated with the fact that the formation of a special test signals involve additional frequency and energy resources.

Closest to the proposed device is the device ground stations for satellite communications network implemented in the satellite communication system (see RF patent 2090003, CL 6 H 04 7/185, 1997), consisting of transmitter and receiver antennas, the input of which is connected to the transmitter output, and its output connected to the input of the radio. The output of the radio connected to the first input of the equipment temporary unification and separation, the second input of which is an information input device. The first output of the equipment temporary split / join is connected both to the input of the transmitter and the input of the delay line, which include output devices, and its second input is connected with the second output equipment temporary unification and separation.

In comparison with analogues device prototype provides improved noise immunity and decrease the used frequency resource.

However, the device is a prototype has disadvantages: - lack of assessment of the quality of communication to control the transmit power of signals in earth stations; - the inability to control the transmission power of the earth station based on the quality of communication.

Closest to the proposed driver is a driver control signal (see USSR author's certificate 4620478, CL 5 H 03 G 3/20, 1991. The automatic gain control), containing an adjustable amplifier, the detector, the first, second and third Comparators, the first and second adenovirally, delay line, the key, the first and second elements And the generator of clock pulses and a reversible counter. The input of the controlled amplifier is information, and its output is connected to the circuit output and the input of the detector. The detector output is connected to inputs of the first, second and third Comparators. The output of the third comparator connected to the input of the second one-shot, the output of which is connected to the input line is key the output of which is connected with the second input of the first element And. the Second input of the second element And is connected to the output of the first one-shot. The first inputs of the first and second elements And is connected to the generator output clock pulses. The outputs of the first and second elements And respectively connected to first and second input of the reversible counter, the output of which is connected to the second input of the adjustable amplifier.

In comparison with analogues shaper prototype has a higher noise immunity.

However shaper prototype has drawbacks: - low control accuracy relative to the information signal as the power control is not carried out to assess the quality of the signal, and by measuring its input level; - the limited scope associated with processing only low frequency signals.

The aim of the proposed method is to develop a method of controlling the transmit power of the earth stations of satellite communication network with a higher noise immunity, reliability, bandwidth, ensuring the required quality of the information channels satellite communication network.

The objective of this unit is to develop awn regulation and throughput while ensuring the required quality of the information channels satellite communication network.

The aim of the proposed driver is the development of driver control signal with a higher accuracy regulation while ensuring the required quality of the information signal with a broader scope.

In the proposed method, this objective is achieved in that in the known method of regulating the transmission power of the earth stations of satellite communication network, namely, that each earth station form the test signal passed from earth stations in the test signals to the satellite station, relay them to earth stations accept relayed the test signals corresponding earth stations, each earth station form a control signal, which regulate the transmit power for pre-satellite networks establish minimum kminand the maximum kmaxthe coefficients of the quality of the communication channel at a given time interval tu. Formed on each earth station test signal delayed for the time it passes to the satellite station and back. The control signal power of the transmitter of each earth station is formed by bitwise addition on the quality of the communication channel ktechby counting the number of mismatched elements between the received retransmitted and delayed test signals. Compare the calculated quality factor of the communication channel with the previously established minimum and maximum coefficients of the quality of the communication channel, if the condition ktech>kmaxor ktech<kform a control signal respectively to reduce or increase the transmission power, and the control process of the power transmission is carried out until reaching the conditions kmin<k<k max. As the test signal on each of the earth stations use its information signal.

Thanks to the new essential features to ensure ongoing quality control of all lines, satellite communications, incoming in the common communication network and the formation of control, taking into account the individual status of each line, the optimal redistribution of power satellite repeater in terms of possible changes in the total load at its input. With this power control transmit earth stations satellite communication network provides a higher polgasowita Nikolai connection.

In the proposed device, this objective is achieved in that in the known device the earth stations for satellite communications, containing a transmitter, the output of which is connected to the input of the transmitting antenna, the output of which is connected to the input of the radio element of the delay line, the input of which is connected to the transmitter input, and the output connected to the first input of the modulo two added driver control signal, the output of which is connected to the control input of the transmitter, and the input connected to the output of the modulo two, the radio test signal, whose input is connected to the output of the transmitting-receiving antenna, and the output to the second input of the modulo two, and the output of the radio receiver and the transmitter input are respectively of information access and information input device.

Thanks to the new essential features to ensure ongoing quality control of the satellite communication line when controlling transmit power of earth stations of a satellite communication network, ensures high control accuracy, throughput, ensuring the required quality of the information channels network satellite St is engaged signal, contains a generator of clock pulses, the first and second adenovirally, inputs, input element, error parser, unit resolution, synchronization unit, a memory unit, the evaluation unit status, shaper threshold quality assessment, the switch, the driver code the driver source code, and the setting unit initial state. The first output setting unit initial state is connected to the set input of the memory block that starts the input of the switch, and to boleosoma the input of the driver code. The second output unit set the initial state is connected to allows the input of the driver code. Installation input shaper code connected to the output of the shaper initial code. The output of shaper threshold quality assessment is connected to the set input unit of assessment, information whose input is connected to the output of the memory block. The clock input of the memory block connected to the first output of the synchronization unit. The second output of the synchronization unit connected to the input of the second one-shot and to allow inputs of the memory block and the switch. Information switch input connected to the output of block assessment. The first and second outputs of the switch connected to and allows boleosoma inputs respectively of block resolution and error parser. The output of the analyzer is connected to the information input of the memory block. The generator output clock pulses is connected to the clock inputs of the synchronization unit, the input element and unit resolution. The output of block resolution connected to the input of the first one-shot, the output of which is connected to allow the inputs of the analyzer errors, synchronization unit, and the input element. The output of the input element connected to the information input of the analyzer. Information input to the input element and the output of driver code are respectively the input and output driver control signal.

Thanks to the new essential features designed to provide continuous assessment of the quality of the information signal increases the accuracy of the regulation.

The analysis of the level of technology has allowed to establish that the analogues, characterized by a set of characteristics that are identical to all characteristics of the proposed technical solutions are missing, which indicates the consistency of the proposed group of inventions condition of patentability "novelty."

Search results known solutions in this and related areas of technology with the purpose of revealing of signs consistent with a distinctive OYA technology. The prior art also revealed no known effect provided the essential features of the proposed group of inventions transformations on the achievement of the technical result. Therefore, the proposed group of inventions meets the condition of patentability "inventive step".

The proposed group of inventions is illustrated by the following drawings: Fig.1 - structure of the satellite communication network; Fig.2 - the dependence of the measurement error from a sample of measurements;
Fig.3 is a time plot illustrating the proposed method;
Fig. 4 is a structural diagram of a device power control transmit earth station satellite communication network;
Fig.5 is a block diagram of the driver control signal;
Fig.6 is a structural diagram of the input element;
Fig.7 is a block diagram of the analyzer errors;
Fig.8 is a block diagram of the memory block;
Fig.9 is a block diagram of the evaluation unit of the state;
Fig.10 is a block diagram of the synchronization unit;
Fig.11 is a block diagram of the shaper threshold quality assessment,
Fig.12 is a block diagram of the driver code;
Fig.13 is a block diagram of the switch;
Fig.14 is a block diagram of the shaper initial code;
is.

The feasibility of the proposed method is explained in the following. In communication systems with multiple access (mainly multiple access frequency division signals) the quality of communication between corresponding subscriber stations is determined by the energy parameters of the lines, depending on the transmit power of the subscriber and base stations, the distribution of the output power of the base station among all working subscriber stations, the gain of antenna-feeder devices and noise characteristics of receive paths as subscriber and the base station, a method of processing signals, the degree of absorption of radio waves in the distribution environment.

In turn, the distribution of transmission power of a base station depends on the number of working through her subscriber stations and from the power of signals received from each subscriber station (see, for example, the Military system of radio relay and tropospheric communication / Ed. by E. A. Volkova. -L.: YOU, 1982, S. 362), i.e.:

where RWH- power signal at the input of the base station from the first subscriber station, Pwihbs- output transmit power of the base station, PBC- the capacity of the existing subscriber stations (FDMA equipment).

When changing these factors, the quality of communication between the individual subscriber stations will change. In particular, these changes can lead to degradation of service in some links. To restore the required communication quality under these conditions, an optimal regulation of the transmission capacity of subscriber stations. Optimal regulation is the need for simultaneous consideration, on the one hand, the desired quality of communication between corresponding subscriber stations, on the other hand, it is possible to more evenly distribute the transmit power of the base station among all working subscriber stations. The last requirement is that when a substantially non-uniform distribution of the transmit power of the base station is possible mutual suppression of concurrent stations. The degree of suppression of the weaker signal strengths measured by the coefficient of suppression ToPdefined by the expression:

(see , for example, the Handbook on satellite communications and broadcasting / Ed. by L. J. Cantor. - M.: Radio and communication, 1997, S. 94).

The possibility of regulating the transmission power further restricting what about the functioning of the entire system is possible through reasonable allocation of the transmission power of the base station among all running the corresponding subscriber stations while monitoring the quality of communication between them.

These requirements are implemented in the proposed method of regulating the transmission power of the earth stations of satellite communication network. The process of adjusting the transmit power of the subscriber stations can be illustrated on the example of a satellite communication system, a high-level diagram of which is shown in Fig.1. The system includes a satellite station (base station), which in General may represent a single repeater connection with multistation access without signal processing on Board with the channel frequency division (FDMA equipment) and a set n of ground offset earth stations (subscriber stations).

When communication on each earth station pre-set minimum and maximum coefficients of the quality of the communication channel kmin, kmax. In digital transmission systems qualitative indicators of the channels are set, usually in the form of a quality criterion - error bit (see, for example, the Handbook on satellite communications and broadcasting / Ed. by L. J. Cantor. - M.: Radio and communication, 1997, S. 85), which is defined as the ratio of the error ktechand is the current quality factor of the link:
ktech=KTM/KOP, (1)
where KTM- the number of incorrectly which is shown in Fig.2, show that for the measurement error probability of occurrence of a single character is not exceeded 10% in a normal distribution of errors sample measurements must be N20. The values of the coefficients of the quality of the communication channel kminand kmaxare experimentally in advance by the formula:

where


where- the arithmetic mean of the selection items,tois the sample variance, kTekelements of the sample.

After entering the connection between the corresponding earth stations is information exchange digital sequences (see, for example, Fig.3A), where F - bits of the guard interval, SC - bits of the clock-recovery, SIF - bits of confidential information IF - bits informational messages.

At each earth station form the test signal. Moreover, in the proposed method, as the test signal is used as an information signal (Fig.3b). Test signals for transmission frequencies i, emit antennas of earth stations in the direction of satellite station with opredelenn detained at the time of its passage to the satellite station and back tdelay(Fig.3G).

Test signals from all ground stations at appropriate frequencies fed to the input of the repeater, where they amplify and rebroadcast in the direction of the respective earth stations on the frequency of reception of the fi'.

Thus, each earth station receive relayed from the satellite station test signal and the corresponding delayed test signal. Using these two signals at each earth station form a control signal, which regulate the transmit power. For this adopted relayed test signal (Fig.3b, where the shaded bits that can be taken wrong) folded modulo two with the delayed test signal (Fig.3G). The coincidence of the two bits in the folding sequences of the total bit is "0", and when they do not match - "1". On the interval tucount the number of unmatched elements ToTMin total sequences containing COPsymbols, i.e. the number of "1" (see Fig.3D). Then calculate the ktechby the formula (1). Calculated ktechcompared with the previously installed kminand kmax. When the implementation is the reduction or increase transmit power. The control signal, in particular, may be formed in each cycle in the form of a single pulse of positive polarity with a constant lengthpaneland amplitude Upanel(see, for example, Fig.3E), provided that ktech<knegative polarity with the same amplitude at ktech>kmaxand Upanel=0 when the condition is met:
kmin<k<k max. (2)
The impact of impulse control in this cycle of measurements leads to a discrete increase (decrease) transmit power of the subscriber stations. In the next cycle of measurement if the condition is false (2) re-generate the control signal, etc. In the current measurement interval transmit power earth stations does not change. The proper regulation of the evaluation of the quality of the communication channel to perform at the end of the time interval tu. The next measurement starts at the end of the duration of the control pulse. The control process of the power transmission is carried out until reaching condition (2). Given that all of the earth stations establish uniform values of kminand kmaxat the entrance of satellite station signal levels from the separated will increase i.e., there is a redistribution of power transmission satellite station in favor of links with the most unfavourable value of ktechprior to the regulation.

The power control unit transmitting earth stations of satellite communication, shown in Fig.4, includes a transmitter 1, a receive / transmit antenna 2, radio 3, the imaging unit control signal 4. The output of the transmitter 1 is connected to the input of the transmitting antenna 2, the output of which is connected to the input of the receiver 3. The output driver control signal 4 is connected to the control input of the transmitter 1. The input of the transmitter 1 and the output of radio 3 are respectively an information input and output device. In the device additionally introduced radio test signal 5, modulo two 6 and the delay line 7. The input of the delay line 7 is connected to the information input of the transmitter 1. The first and second inputs of the modulo two 6 connected respectively to the outputs of the delay line 7 and the radio test signal 5. The output of the adder module 6 is connected to the input of the shaper control signal 4. The input of the radio test signal 5 is connected to the output of the transmitting-receiving antenna 2.

Hadasiouski implemented in real time using existing components.

As the transmitting antenna 2 can be used any known highly directional parabolic antenna, for example, described in the manual: Satellite communications and broadcasting / Ed. by L. J. Cantor. - M.: Radio and communication, 1997, S. 397-409. Transceiver antenna is used in conjunction with duplicitous device, which in Fig.4 is not shown. Such devices are known (see, for example, the reference manual: Satellite communications and broadcasting / Ed. by L. J. Cantor. - M.: Radio and communication, 1997, S. 397-409) and provide maintenance of transmission and reception simultaneously through the same feed antenna at different transmission frequencies.

Radio 3 and radio test signal 5 are typical of radio receiving devices, are described, for example, in the book: the Military system of radio relay and tropospheric communication / Ed. by E. A. Volkova. - L.: YOU, 1982, S. 388-389).

As the transmitter 1 may be used any known transmitter, including the causative agent 1.1 and amplifier 1.2 with adjustable gain. The General scheme of such transmitters are known and described, for example, in the book: the Military system of radio relay and tropospheric communication / Ed. by E. A. Volkova. - L.: YOU, 1982, S. 382 - 388. Also known amplifiers power Italy".

As modulo two 6 can be used in the adder described in the book: C. A. Batashev, C. N. Veniaminov, B., Kovalev, and other Circuits and their application. - M.: Energy, 1978, S. 178-180.

The delay line 7 can be realized by applying a binary discrete delay lines described in the book: Antenna. A collection of articles. Vol.26 / edited by A. A. Pistohlkors. - M.: Communication, 1978, S. 170-120.

The driver control signal 4 is designed for discrete control of the transmission power depending on the quality of communication and will be described below.

The power control unit transmitting earth stations satellite communication network operates as follows.

Previously earth station satellite communication network in the control unit transmit power set minimum kminand the maximum kmaxthe coefficients of the quality of the communication channel at a given time interval tu.

For earth stations form the test signal and the test signal is used as an information signal (Fig.3b). Information signal from the input device at a time is fed to the delay line 7 and the causative agent 1.1. The causative agent 1.1 transfer signal in the range servant who, what comes through duplicitous device to the antenna 2, which is radiated to the satellite station.

The microwave signal from the reporter through the satellite station is supplied to the antenna 2 earth stations and through duplicitous device in the receive path, where is the preamp, selection of microwave radio signals and demodulation. The received signal is sent to an information output device.

After entering the connection between the corresponding earth stations is information exchange digital sequences (see, for example, Fig.3A).

At the same time your microwave signal retransmitted by a satellite station that comes through the antenna circuitry in the receiver test signal 5, which is typical receiver, tuned to the reception frequency of the reporter. After transformation in the receiver information signal at the second input of the modulo two 6, at the first input of which receives the delayed information signal, where it is bitwise addition.

The coincidence of the two bits in the folding sequences of the total bit is "0", and when they do not match - "1". On the interval tucount the number of Nesta "1" (see Fig. 3D). Then calculate the ktechby the formula (1). Calculated ktechcompared with the previously installed kminand kmaxIf the condition ktech>kmaxor ktech<kform a control signal respectively to reduce or increase the transmission power. The control signal, in particular, may be formed in each cycle in the form of a single pulse of positive polarity with a constant lengthpaneland amplitude Upanel(see, for example, Fig. 3E), provided that ktech<knegative polarity with the same amplitude at ktech>kmaxand U=0 if the condition (2).

The impact of impulse control in this cycle of measurements leads to a discrete increase (decrease) transmit power of the earth station. In the next cycle of measurement if the condition is false (2) re-generate the control signal, etc. In the current measurement interval the transmit power of the earth station is not changed. The proper regulation of the evaluation of the quality of the communication channel to perform at the end of the time interval tu. The next measurement starts at the end of a long

The driver control signal shown in Fig.5, comprises a generator of clock pulses 3, the first 4 and second 13 adenovirally, inputs, input element 1, the analyzer 2, the unit of resolution 14, the synchronization unit 5, a memory unit 6, unit assessment 7, shaper threshold quality assessment 8, the switch 9, the driver code 10, shaper initial code 11 and the setting unit initial state 12. The first output setting unit initial state 12 is connected to the set input of the memory unit 6, the trigger input of the switch 9, and to boleosoma the input of the driver code 10. The second output setting unit initial state 12 is connected to allows the input of the driver code 10. Installation input shaper code 10 is connected to the output of the shaper initial code 11. The output of shaper threshold quality assessment 8 is connected to the set input unit of assessment 7, information whose input is connected to the output of the memory unit 6. The clock input of the memory unit 6 is connected to the first output of the synchronization unit 5. The second output of the synchronization unit 5 is connected to the input of the second the one-shot 13 and to allow the inputs of the memory unit 6 and the switch 9. Information input komputindo to information and switching the inputs of the driver code 10. A second one-shot 13 is connected to and allows boleosoma inputs respectively of block resolution 14 and the analyzer 2. The output of the analyzer 2 is connected to the information input of the memory unit 6. The generator output clock pulses 3 is connected to the clock inputs of the synchronization unit 5, the input element 1 and unit resolution 14. The output of block resolution 14 is connected to the input of the first one-shot, the output of which is connected to allow the inputs of the analyzer 2, the synchronization unit 5 and the input element 1. The output of the input element 1 is connected to the information input of the analyzer 2. Information input input element 1 and the output of driver code 10 are respectively input and output gain control.

Included in the General structure of the shaper elements are typical and can be technically implemented in real time using existing components.

The input element 1 is intended to highlight the information sequence from a long series of sequences of the same sign. In particular, it can be implemented on Tregubova element And (Fig.6). Such elements are known and described, for example, in the book: C. Y. the second inputs of the element And are respectively the information 1.1, clock 1.2 and licencing 1.3 inputs input element 1, and the output element And an output element 1.

Parser error 2 shown in Fig.7, is designed to calculate the ktech(counting incorrectly received bits of the information sequence). It can be implemented on binary counters, built using digital integrated circuits, are described, for example, in the book: Digital integrated circuits. - M.: Radio and communication, 1994, S. 68.

United inputs V1and HE-V2the binary counter are permissive input 2.1 parser error 2. Input synchronization and installation binary input R of the counter correspond to information 2.2 and boleosoma 2.3 inputs of the analyzer 2. The Q-outputs of the binary counter correspond to the output of the analyzer 2, which is a four-digit bus.

Clock (GTI) 3 provides for the simultaneous operation of all units of the device. Schemes such generators are known and described, for example in the book: the Handbook for integrated circuits / edited by centuries Tarabrina. - M.: Energy, 1980, S. 588 Fig. 5.35; 5.36.

The first one-shot 4 is designed for placing measurement interval tmeasuring range

The synchronization unit 5 shown in Fig.10, is designed for recording and reading information in the memory unit 7, and controls the switch 9. In particular, it can be implemented on the elements of AND, AND NOT, as described, for example, in the book: Digital integrated circuits. - M.: Radio and communication, 1994, S. 234-237.

The second input element And 5.1 is a clock input 5' synchronization unit 5. The first input element And 5.1, which is connected with the input element AND NOT 5.2, is permissive input 5" synchronization unit 5. The outputs of the elements And 5.1 AND 5.2 are the first 5"' and the second 5" outputs of the synchronization unit 5.

The memory unit 6 is used for storing results of calculations parser error 2 during the regulation of the transmission power at each measurement interval tu. In particular, it can be implemented on the shift register 6.1 and the elements And 6.2-6.5 (Fig.8). Schemes such registers are well known and are described, for example, in the book: Digital integrated circuits. - M.: Radio and communication, 1994, S. 62, ri - M.: Radio and communication, 1994, S. 234-237.

Second input elements And 6.2-6.5 are connected and are permissive 6' entrance block of memory 6. Input synchronization and information D1-D4the inputs of the shift register 6.1 are respectively clocked 6 and 6"' inputs of the memory unit 6. The installation logthe shift register 6.1 is an installation log 6'"' of the memory block 6. Q1-Q4the outputs of the shift register 6.1 respectively connected with the first inputs of elements And 6.2-6.5, the outputs of which are the output of the memory unit 6. Information input 6"' and the output of the memory block 6 represent four-digit bus.

Unit assessment 7 shown in Fig.9, is designed to compare the ktechwith kminand kmax. In particular, it can be implemented on the Comparators performed on integrated circuits, are described, for example, in the book: B. C. Tarabrin, L. F., Lunin, Y. N. Smirnov and other Integrated circuit / Reference. - 2nd ed., use - M.: Energoatomizdat, 1985, S. 285.

And-inputs of the comparator 7.1, United respectively with the same inputs of the comparator 7.2, are information input 7" unit assessment 7. In-inputs of the Comparators 7.1 and 7.2 are the installation entrance 7' unit of evaluation is the future a digit bus.

Shaper threshold quality assessment 8 is intended to set the values of kminand kmax. In particular, as a shaper threshold quality assessment 8 (Fig.11) can be used resistive matrix integrated circuit is described, for example in the book: B. C. Tarabrin, L. F. Lunin, N. Y., Smirnov and other Integrated circuit / Reference. - 2nd ed., use - M.: Energoatomizdat, 1985, S. 190.

The outputs of the resistive matrices constitute the output of the shaper threshold, which represents an eight-bit bus.

The switch 9 shown in Fig.13, is designed to provide information and control signals to the driver code 10 and start a second one-shot 13. In particular, it can be implemented on the elements OR, AND, AND NOT, as described, for example, in the book: Digital integrated circuits. - M. : Radio and communication, 1994, S. 234-237, and the one-shot, which can be used standby multivibrators, which are described in the book: C. A. Batashev, C. I. Veniaminov. Century, Kovalev and other Circuits and their application. - M.: Energy, 1978, S. 193 or B. N. Shiloh. Linear integrated circuits. - M.: Soviet radio, 1979, S. 210-214.

The first and second inputs of the element OR 9.1, connected respectively to the input ELA AND NOT 9.2 connected to the first input element And 9.3, the output is the second output of the switch 9. The output element OR 9.1 is connected with the second input element And 9.4, the first entry which matches the input 9 switch 9. The output element And 9.4 connected with the second input element OR 9.5 whose output is the first output of the switch 9. The first input element OR 9.5 connected to the output of the one-shot 9.6, the entrance of which is a trigger input 9"' switch 9.

The driver code 10, is shown in Fig.12, is designed to generate a control signal to the gain control of the MIND. In particular, it can be implemented on binary counters, built using integrated circuits, are described, for example, in the book: Digital integrated circuits. - M.: Radio and communication, 1994, S. 143, Fig.3.78 A.

D-inputs of the binary counter are the installation entrance 10.1 driver code 10. The inputs of the addition/subtraction1 and sync binary counter are respectively switching 10.2 and information 10.3 inputs of the driver code 10. Installation of R and permitting E inputs are respectively boleushim 10.4 and licencing 10.5 inputs of the driver code 10. The outputs of the counter are sragow bus.

Shaper initial code 11 (Fig.14) is designed to generate signals corresponding code initial value of the transmission power P0. In particular, it can be implemented using a resistive matrices are described, for example, in the book: B. C. Tarabrin, L. F. Lunin, Y. N. Smirnov and other Integrated circuit / Reference. - 2nd ed., use - M.: Energoatomizdat, 1985, S. 190.

The setting unit initial state 12, shown in Fig.15, is designed for restoring the original state of the analyzer 2, the memory unit 6, the driver code 10 and the initial launch of obnubilate 4. In particular, it can be implemented using resistive elements, which are described, for example, in the book: B. C. Tarabrin, L. F. Lunin, Y. N. Smirnov and other Integrated circuit / Reference. - 2nd ed., use - M.: Energoatomizdat, 1985, S. 190.

The second one-shot 13 is designed to generate signals with a duration corresponding to the time control transmission power. In particular, as the second one-shot 13 can be used standby multivibrators, are described, for example, in the book: C. A. Batashev, C. N. Veniaminov. Century, Kovalev and other Circuits and their application. - M.: Energy, 1978, S. 193 or VP to run the first one-shot 4. In particular, it can be implemented on the elements AND IS NOT, AND described, for example, in the book: Digital integrated circuits. - M.: Radio and communication, 1994, S. 234-237.

The second input element And 14.2 is an information input 14' block permissions 14. The input element AND-NOT 14.1 is permissive input 14" bloc resolution 14. The output element AND IS NOT 14.1 connected to the first input element And 14.2, the output of which is the output of unit resolution 14.

The work of the proposed driver can be divided into two stages: the first stage corresponds to the device in the initial state, the second direct work.

Install the device in the initial state involves the following steps: setting a threshold on the quality assessment signal kminand kmaxthe preparation work of driver code 10, " preparing to install the code corresponding to the initial transmit power of the MIND P0zeroing memory block 6.

Setting thresholds for assessing the quality of the signal kminand kmaxproduced by connecting the set input 7' unit assessment 7 (Fig.9) through the resistance R of the resistive matrix shaper threshold quality assessment 8 (Fig.11) to the power supply that is

In this case, is vtorogo evaluation of the current signal quality and subsequent regulation of the transmission power.

Preparation of driver code 10 to code generation the initial transmit power of the MIND P0connect the installation of inputs 10.1 binary counter driver code 10 (Fig.12) through the resistance R of the resistive matrix shaper initial code 11 (Fig.14) to the power source E, as well as serving on the enable input 9.5 driver code 10 signal corresponding to a logical "1", formed in the mounting block initial state 12 (exit 2, Fig.15), by connecting a resistance R to the power supply that is

Counter driver code 10 (Fig.12) is carried out by feeding on Abdoulaye entry 9.4 (Fig.12) logical "1", formed in the mounting block initial state 12 (output 1, Fig.15) by connecting a resistance R to the power supply that is

Reset previous state corresponding to the reset register in the memory unit 6 (Fig.8) is carried out by applying a signal corresponding to a logical "1" by connecting the power source E through a resistor R block installation initial state 12 (output 1, Fig.15) on the installation log 6"" memory block 6 (Fig.8).

The above-described series of operations prepares the device to work.

: Open the given trigger input 9"' switch 9 (Fig.13). This signal triggers the one-shot 9.6 (Fig.13) forming a pulse signal, which through the element OR 9.5 switch 9 (Fig. 13) via its first output is supplied to the information input 10.3 driver code 10 (Fig.12). This signal provides a record in a binary counter (Fig. 12) generated code in the driver source code 11 (Fig.14) during installation of the device in its original state. As a result, at the output of the driver code 10 code set initial transmit power of the MIND P0as to which is the further regulation of the output signal of the MIND. This algorithm determines the further operation of the device gain.

Conformity assessment output power of the MIND the desired quality of the generated signal is produced at time tusufficient for a set of statistical data on the coefficient of the error corresponding to the current signal quality. The required period of time tuset the first one-shot 4, which is started when there is no signal on permissive 14 and 14' unit resolution 14 (Fig.16) respectively with outputs of the second one-shot 13 and GTI 3.

Formed the first Odera error 2 (input 2.1, Fig.7), the synchronization unit 5 (input 5" Fig.10) performs a number of functions: sets the time of the individual pulses on the information input of the input element 1 (1.1, Fig.6), the logic of which is determined trehochkovym element (Fig. 6). The output signal of the input element 1 occurs during the first formed by the one-shot 4 signal with the advent of the information signal corresponding to a logical "1" frequency GTI 3, supplied to the clock input 1.2 input element 1 (Fig.6) from the GTI 3.

Information signals from the output of the input element 1 act on the information input 2.1 parser error 2, which is the clock input of a binary counter (Fig.7). Because allowing to record inputs 2.1 binary counter analyzer error 2 (Fig.7) is connected to the output of the first one-shot 4, it provides the counting of incoming pulses on the information input 2.2 parser error 2 only for the first time the one-shot 4. Binary counter (Fig.7), counting the number of information pulses, generates at its output an information signal in the form of binary code, which signals generated in the synchronization unit 5 (Fig. 10, the element And 5.1, 5") with frequency driver is bratara 4, the signals which are sent to the input 5 of the element And 5.1, are recorded in the memory unit 6. Recorded information in the memory unit 6 is stored until receipt of information signals from the output of the analyzer 2. During operation of the analyzer error 2 reading information from the memory unit 6 is not performed. This is ensured by the fact that during operation the first one-shot 4 in the synchronization unit 5 at the output of element AND-NOT 5.2 (Fig.10) is formed prohibiting signal is a logical "0" which, when enable input 6' of the memory block 6 (Fig.8, the input elements And 6.2-6.5), provides the state of logical "0" at the output of these elements and memory unit 6 as a whole. This inhibit signal inhibits the progress information output unit assessment 7 through the switch elements 9 to the input of the driver code 10. Blocking is carried out by supplying a logical "0" to the second input element And 9.4 (Fig.13), corresponding allows input 9 switch 9.

After the first one-shot 4 on the output element AND IS NOT 5.2 (Fig.10) is formed by an enable signal corresponding to a logical "1", which provides the information read from the memory unit 6 and the recording of information through commutators the one-shot 13.

Information in the form code from the output of the memory unit 6 is supplied to the a-inputs of the Comparators 7.1,7.2, corresponding to the information input of the evaluation unit 7 (Fig. 9). Since the installation inputs 7' Comparators 7.1 and 7.2 (Fig.9) the preset code corresponding to the required thresholds for assessing the quality of the signal kminand kmaxthen the Comparators 7.1 and 7.2 compares the code information signal IDs thresholds. The results of the comparison in the form of signals of logic "1" or "0" from the outputs of the Comparators 7.1 and 7.2 (Fig. 9) act on the information input 9' switch 9 (Fig.13), which depending on what corresponds to the information signal relative to the selected threshold connects the first and second output switch 9 to the switch and to the information inputs of the driver code 10, or only to the information input of the driver code 10 (Fig.12).

Let us consider the possible cases. If ktech>kmaxthen the output of comparator 7.1 (Fig.9) is the signal of logical "0" and the output of the comparator 7.2 - "1". These signals, when the information input 9' switch 9 (Fig.13), which corresponds to signals of logical "0" and logical "1" at the inputs of the element OR 9.1 (Fig.13). As a result, the second output of the code I 10, translates the binary counter of the driver code 10 (Fig. 13) to increase the account. On the arrival of the information signal from the first output of the switch 9 on the information input 10.3 driver code 10 binary counter increments on the exit code of the discharge relative to the pre-installed, per unit, which corresponds to the increase in transmitter power.

If ktech<kat the output of the Comparators 7.1 and 7.2 (Fig.9) are respectively the signals of logic "1" and logical "0" on the first and second outputs of the switch 9 will be formed logical "1" and logic "0" respectively. These signals include a binary counter driver code 10 (Fig. 13) reduce output code of the counter (Fig.12) relative to a preset threshold. This corresponds to a reduction in transmitter power.

In the case of kmin<k<k maxthe outputs of Comparators 7.1 and 7.2 are formed signals of logical "0". This corresponds to the fact that the first and second outputs of the switch 9 are formed signals of logical "0", which do not change the state of the binary counter driver code 10 (Fig.12). This corresponds to the fact that the transmit power remains the same.

At the time maintains you want to prevent the passage of information pulses to the analyzer 2, to prevent its operation, reset and is ready to work for the next interval tu. This set of actions is provided by the inclusion of the second one-shot 13 according to the signal generated in the synchronization unit 5 element AND NOT 5.2 (Fig. 10) upon completion of the first one-shot 4. The output signal from the second one-shot 13 is supplied to Abdoulaye input 2.3 parser error 2 (Fig. 7), clears it, and also supplied to an enable input of the 14" unit resolution 14 (Fig.16), providing for the prohibition of the launch of the first one-shot 4. After the second one-shot 13 at the output of element AND-NOT 14.1 (Fig.16) is formed a signal corresponding to a logical "1", which will be allow to include the first one-shot 4 for the next cycle.


Claims

1. The method of regulating the transmission power of the earth stations of satellite communication network, namely, that each earth station form the test signal passed from earth stations in the test signals to the satellite station, relay them to earth stations accept relayed the test signals corresponding earth stations, each earth station form a seat reservation for satellite networks establish minimum kminand the maximum kmaxthe coefficients of the quality of the communication channel at a given time interval tuformed on each earth station test signal delayed by the propagation time to the satellite station and back, and the control signal, the transmit power of each earth station is formed by bitwise addition modulo two of the received retransmitted and the delayed test signal, calculates the current quality factor of the communication channel ktechby counting the number of mismatched elements between the received retransmitted and delayed test signals, comparing the calculated quality factor of the communication channel with the previously established minimum and maximum coefficients of the quality of the communication channel, if the condition ktech>kmaxor ktech<kform a control signal respectively to reduce or increase the transmission power, and the control process of the power transmission is carried out until reaching the conditions kmin<k<k max.

2. The method according to p. 1, characterized in that the test signal on each of the earth stations use its information signal.

3. The device module is connected to the input of the transmitting antenna, the output of which is connected to the input of the radio element of the delay line, the input of which is connected to the transmitter input, and the output connected to the first input of the modulo two, characterized in that the added driver control signal, the output of which is connected to the control input of the transmitter, and the input connected to the output of the modulo two, the radio test signal, whose input is connected to the output of the transmitting-receiving antenna, and the output to the second input of the modulo two, and the output of the radio receiver and the transmitter input are respectively of information access and information input device.

4. The driver control signal, comprising a generator of clock pulses, the first and second adenovirally, characterized in that the added input element, parser error, unit resolution, synchronization unit, a memory unit, the evaluation unit status, shaper threshold quality assessment, the switch, the driver code the driver source code and the setting unit initial state, the first output of which is connected to the set input of the memory block that starts the input of the switch and to boleosoma the input of the shaper code, W is CNY whose input is connected to the output of the shaper initial code the output of shaper threshold quality assessment is connected to the set input unit of assessment, information whose input is connected to the output of the memory block, the clock input of which is connected to the first output of the synchronization unit, the second output of the synchronization unit connected to the input of the second one-shot and to allow inputs of the memory block and the switch information input of which is connected to the output of block assessment, the first and second outputs of the switch are connected respectively to the information and switching the inputs of the driver code, the second one-shot is connected to and allows boleosoma inputs respectively of block resolution and error parser, the output of which is connected to the information input of the memory block, the generator output clock pulses is connected to the clock inputs of the synchronization unit, the input element and unit resolution, the output of which is connected to the input of the first one-shot, the output of which is connected to allow the inputs of the analyzer errors, the synchronization unit and the input element, the output of which is connected to the information input of the analyzer, the information input of the input element and the output of driver code are respectively

 

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