(57) Abstract:The invention relates to radio communications and can be used in space and terrestrial communication systems using spatial modulation. The technical result is to enhance the functionality and improve the speed of information. Line radio contains on the transmission side of the generator carrier and clock frequencies, two channel forming orthogonal frequency channels, one of which is used as a sync channel, and the second as a carrier of information. At the receiving side to synchronize the received signal with the reference and the selection of the received information. Introduction on the transmission side frequency synthesizer, two keys, bass and adder, and the reception of the two bandpass filters, two schemes for selecting the maximum of the comparison circuit and the phase shifter 90° allowed two orthogonal channels to transmit both the basic information and additional, which can be used as a service channel. 4 Il. The proposed device relates to the field of radio communications and can be used in space and terrestrial communication systems using spatial modulation.It is also known device.with. N 1141978 containing two channels, one of which information is transmitted using angular modulation, and the second channel using the additional modulation signals according to the polarization of the waves, making it possible to pass additional information (reuse frequency).However, in the case of wideband signals, which is typical for modern communication systems, low immunity receiving information on the second channel due to the low noise reference signal for the synchronous detector.The closest to the technical nature of the claimed object is "Apparatus for transmission of discrete information", ed.St. N 300946, taken as a prototype.
1 - the generator carrier and clock frequency (GTN);
2 - shaper orthogonal pseudo-random sequences (FOPP);
3 is a pseudo - random sequence generator (HPG);
4 - unit phasing;
5, 6, the first and second multipliers, respectively;
7 - Phaser 90o;
8 - phase manipulator;
9 is a diagram of the addition.
10, 11, the first and second multipliers, respectively;
12 - shaper orthogonal pseudo-random sequences (FOPP);
13 - reference generator pseudo-random sequence (GOP);
14 - device phasing;
15 - device synchronization;
16, 17, the first and second bandpass filters, respectively;
18 is a phase detector.The device prototype contains on the transmission side GNTC, the first output of which is connected with the first inputs FOPP and GPP, the second inputs of which are connected respectively to the first and second outputs of the device phasing 4, exit POP connected to the first input of the first multiplier 5, a second input connected to the output of the phase shifter 90o7, and the input of the phase shifter connected to one of inputs of fatwah of which is connected to the output of the phase manipulator 8, and the output of the second multiplier 6 is connected with the second input of the differential summing 9, the first input connected to the output of the first multiplier 5, the output of the adder 9 is the transmitter output, the first input of the phase manipulator 8 is an information input; at the receiving side input synchronization device 15 is connected with the first inputs of the first 10 and second 11 multipliers, the outputs of which are connected respectively to the inputs of the first 16 and second 17 of bandpass filters whose outputs are connected respectively with the first and second inputs of the phase detector 18. the output which is the output device, the output of the synchronization device 15 is connected with the first inputs FOPP and GAP, the second inputs of which are connected respectively to the first and second outputs of the device phasing 14, the output POP connected with the second input of the first multiplier 10, and the output GAP connected to the second input of the second multiplier 11.The device prototype works as follows.In the transmitter GNTC generates two frequencies clock frequency for POP and GPP and the carrier frequency signal. Clocked output GNTC is fed to the input POP and GPP that produce double pseudo-random sequence. Edicine and duration, which is determined by the value of the clock frequency. The laws of formation of pseudo-random sequences are selected so as to ensure low cross-correlation between the pseudo-random sequences FOPP and TPP at any phase shift between them (quasiorthogonal binary pseudo-random sequence. This condition is necessary for their effective separation and suppression of the echo signal in the receiver.The device phasing 4 install the shift registers POP and GPP in the same initial state, so that the communication phase of their pseudorandom sequences. The device phasing 4 consists of decoders initial States FOPP and GPP and pulse phasing scheme, which provides a combination of initial conditions in phase. Binary pseudo-random sequence output FOPP is supplied to the multiplier 5. To the second input of the multiplier 5 through the phase shifter 90o7 output GNTC comes oscillation of the carrier frequency, which in the multiplier 5 is multiplied by a binary pseudo-random sequence. As a result, the output of the multiplier 5 is formed a signal representing the oscillation of the carrier frequency with a constant amplit pseudorandom sequence output GPP is supplied to the multiplier 6, to the second input of which a phase manipulator output GNTC comes oscillation of the carrier frequency. At the output of the multiplier 6 is formed a signal representing the oscillation of the carrier frequency with a constant amplitude shift keyed phase by 180oby law, a binary pseudo-random sequence. Depending on the law of the transmitted information phase arm 8 carries out the rotation phase of the carrier frequency signal at the output of the multiplier 6 relative to the carrier frequency of the signal at the output of the multiplier 5 to 0 or 180o. Thus, depending on the sign of information transmitted carrier frequencies of these signals are shifted from each other in phase. From the outputs of the multipliers 5 and 6, the signals are sent to the scheme of adding 9, which forms an output signal representing the oscillation of the carrier frequency with a constant amplitude shift keyed phase at 0o, 90o, 180oand 270oC, and moments of manipulation and the order of these values of the phases is determined by the ratio of the signs of the elements of the binary pseudo-random sequences FOPP and GPP and transmitted phase difference. With schema adding 9 signal enters the high-frequency transmitter and radiated in the air.
FIELD: communications engineering.
SUBSTANCE: proposed system has user terminal, gateway, and plurality of beam sources radiating plurality of beams, communication line between user terminal and gateway being set for one or more beams. Proposed method is based on protocol of message exchange between gateway and user. Depending on messages sent from user to gateway, preferably on pre-chosen periodic basis, gateway determines most suited beam or beams to be transferred to user. Messages sent from user to gateway incorporate values which are, essentially, beam intensities measured at user's. Gateway uses beam intensities measured at user's to choose those of them suited to given user. Beams to be used are those capable of reducing rate of call failure and ensuring desired separation level of beam sources.
EFFECT: reduced rate of call failure in multibeam communication system.
20 cl, 27 dwg
FIELD: automatic adaptive high frequency packet radio communications.
SUBSTANCE: each high frequency ground station contains at least one additional high frequency receiver for "surface to surface" communication and at least one additional "surface to surface" demodulator of one-tone multi-positional phase-manipulated signal, output of which is connected to additional information input of high frequency controller of ground station, and input is connected to output of additional high frequency "surface to surface" receiver, information input of which is connected to common high frequency receiving antenna, while control input is connected to additional control output of high frequency controller of ground station.
EFFECT: prevented disconnection from "air to surface" data exchange system of technically operable high frequency ground stations which became inaccessible for ground communications sub-system for due to various reasons, and also provision of possible connection to high frequency "air to surface" data exchange system of high frequency ground stations, having no access to ground communication network due to absence of ground communication infrastructure at remote locations, where these high frequency ground stations are positioned.
2 cl, 12 dwg, 2 tbl
FIELD: planning data transfer in wireless communication systems.
SUBSTANCE: proposed method used for planning data transfer over incoming communication line for definite terminals of wireless communication system includes formation of definite set of terminals for probable data transfer, each set incorporating unique combination of terminals and complies with estimate-designed hypothesis. Capacity of each hypothesis is evaluated and one of evaluated hypotheses is chosen on capacity basis.
EFFECT: enhanced system capacity.
39 cl, 12 dwg
FIELD: mobile communication systems.
SUBSTANCE: system contains closed contour, thus expanding similar system with open contour and made with possible use of distancing technology during transfer with four antennas, and method for transferring signal in aforementioned system. Method for transferring signal in system for spatial-temporal distancing during transfer with closed contour, having several transferring antennas, includes: spatial-temporal encoding of symbols, meant for transfer; classification of encoded symbols in appropriate groups; and multiplication by different weight values of each group of transferred symbols and their transmission.
EFFECT: improved quality of communication.
5 cl, 5 dwg
FIELD: radio communications, possible use in space and ground communication systems, using noise-like signals.
SUBSTANCE: at transmitting side device features: first and second transmitter decoders, transmitter counter, first and second transmitter keys, transmitter phase inverter, OR circuit of transmitter, at receiving side device features: first and second receiver decoders, receiver counter, first and second receiver keys, receiver phase-inverter, OR circuit of receiver, first and second gates.
EFFECT: increased concealment of information being transferred.
FIELD: mobile communication system which uses adaptive antenna array circuit with a set of inputs and a set of outputs.
SUBSTANCE: in accordance to the invention, first receiver computes receipt value with usage of compressed signal received from receipt signal, to generate receipt beam of first receiver and computes weight value of transmission with usage of computed weight value of receipt to generate transmission beam of second transmitter, generating check connection information, which includes weight value of transmission. First transmitter transmits check connection information to second receiver. Second receiver receives check connection information, and second transmitter determines weight value of transmission from check connection information received in second receiver, and generates transmission beam which corresponds to weight transmission value, to transmit the signal by applying transmission beam to the signal.
EFFECT: provision of system and method for transmitting/receiving in mobile communication system using two-stage method for creating a weight value.
6 cl, 12 dwg
FIELD: onboard radio-systems for exchanging data, possible use for information exchange between aerial vessels and ground-based complexes in radio communication channels.
SUBSTANCE: complex of onboard digital communication instruments contains two receiver-transmitters of very high frequency broadcasting range, two receiver-transmitters of high frequency range, interface switching block, control block, modulator-demodulator (modem), control and indication panel, frequency-separation device of high frequency range and frequency-separation device of very high frequency range.
EFFECT: increased interference resistance of data, reduced level of collateral radio emissions and fulfilled electromagnetic compatibility requirements.
FIELD: method and device for receiving data in mobile communication system using a circuit for adaptive generation of receiving beam weight.
SUBSTANCE: in accordance to the invention, mobile communications system receives a compressed signal, produced from received signal, and determines first value of error, using first circuit in clock point, and second value of error, using second circuit, which is different from first circuit in clock point. The system determines weight of application of first circuit in accordance to difference between first value of error and second value of error and generates third value of error, using the circuit which combines first circuit and second circuit, and determines the weight of the receiving beam, using compressed signal, third error value and output signal.
EFFECT: realization of the device and method for generation of receiving beam with minimal error value in mobile communications system.
2 cl, 9 dwg
FIELD: information technologies.
SUBSTANCE: invention relates to the radio communications and can be used in wireless communications system. Signals are transmitted with party check code usage with low density. Raise supporting party check matrix with low density is formed with the help of elements value extension in party check matrix with low density with the help of submatrix, which conforms a number of transmitting aerials. Specific transmitting signals are coded with usage of supporting raise party check matrix with low density. After that, coded signals are conversed seria/parallel and transmitted through transmission aerials.
EFFECT: improvement of data jam resistance in channel with noises while high-speed transmission.
36 cl, 16 dwg
FIELD: communication technologies.
SUBSTANCE: detecting techniques for close components of multi-beam distribution are described. The techniques are aimed at prevention of channel merging without relative position monitoring between each of diversity channel set. Displacement limits are defined for each diversity channel. Temporary tracing commands are suppressed. Such commands may displace diversity channels beyond their displacement limits. Displacement limits are dynamically updated, with displacement limits for each diversity channel defined according to displacement limits of adjacent diversity channels.
EFFECT: prevention of diversity channel merging; increase in system efficiency and capacity and decreased improper use of system resources.
12 cl, 10 dwg, 1 tbl