Method of generating pseudorandom signal chaotic sequence. RU patent 2335842.
 Optimisation of bandwidth of wire cellular network / 2335092Invention is related to wire cellular systems. System of transceivers of basic stations (STBS) operates in cellular telephone network that consists of main port of ascending line of communication and distanced port of ascending line of communication, which are adjusted for combined operation on reception of signals of ascending communication line by radio from cellular phones so that both ports receive signals of ascending communication line from every of cellular phones. Two ports are connected to receive of signals from wire telephones so that main port of ascending communication line receives signals only from the first group of wire telephones, and spaced port of ascending communication line accepts signals only from second group of wire telephones. System also includes circuits of signals processing, which are adjusted to receive of signals from ports of ascending communication line and transmission of signals through network. |
 Device and method of channel assessment in system of cellular communications with multiplexing with orthogonal frequency distribution, which uses multiple transmitting antennae / 2335087Invention is related to device and method of channel assessment in communications system with OFDM. Device and method of channel assessment with application of signals of preambles received from servicing Unit B and neighboring Units B, each having N(>1) of transmitting antennae, in UE, which has M(>1) of receiving antennae, in wide-range system of wireless communication. Unit of calculation of Units B number calculates maximum number N of channel-assessed Units B, using preambles length, number of antennae in every Unit B and number of paths of multiradiate distribution. Generator of matrixes of preambles of cells multiplicity generates matrix x of preambles of cells multiplicity by generating of matrix of Unit B preambles for every of Units B and selection of matrixes of N preambles of Units B in accordance with capacity of reception among matrixes of Units B preambles. Facility of channel assessment performs channel assessment, using x and signals received through M of antennae for the period of preambles reception. |
 Modified regulation of power for hybride automatic request for repetition in case of feedback / 2335086Invention is related to communication. In method of power regulation in wireless communication system, initial transmission of data shot in feedback is accepted, and the first level of data shot energy level is measured. After that, energy lack is measured in the first level of energy. If the first level energy is not sufficient to correctly decode data shot so that, whenever data shot is repeatedly transmitted with the second level of energy equal to difference between the first level of energy and energy lack, data shot could be correctly decoded with the help of combined energy of the first and second levels. |
 Radio station with adaptive compensation of interferences / 2335084Invention is related to radio engineering and may be applied in systems of radio communication. Radio station with adaptive compensation of noises contains serially connected downward limiter and circuit "prohibition", information inputs of which are combined and represent device input, as well as serially connected circuit of accumulation, analogue-digital converter (ADC) and programmed logical integral circuit (PLIC) intended for determining optimal value of threshold voltage, and an electronic key and digital-analogue transducer (DAC). Output of DAC is connected to control input of downward limiter, while input is connected to the second input of PLIC. Outlet of accumulation circuit is connected to analogue input of electronic key, control output of PLIC is connected to digital input of electronic key, the output of which represents the output of device, output of circuit "prohibition" being connected to input of accumulation circuit. |
 Multiplicative device for protection against narrow-band interferences with adaptive threshold of detection / 2335083Device is related to radio engineering and may find application in receiving devices. The device containing serially connected amplifier of intermediate frequency, coupler, multiplication unit, the second outlet of which is connected with the second outlet of coupler, band filter of low frequencies, amplifier, also includes the following serially connected components, i. e. analogue-digital converter (ADC), programmed logical integral circuit (PLIC) and electronic key, as well as a downward limiter and digital-analogue converter. Output of downward limiter is connected to input of intermediate frequency amplifier, output of amplifier is connected to ADC input and second input of electronic key, the output of which represents a device output, the second output of PLIC is connected with DAC input, the output of which is connected with second input of downward limiter, the first input of which represents a device input. |
 Measured response to controlling power based on history / 2334356Method of the response deceleration to instructions of controlling power communication channels lies in saving working history during preset duration of controlling power instructions time, included in the first variety of frames accepted in one direction of the communication channel. Thereat the first variety of frames is queued before processing. Generate power controlling commands for the second variety of the frames transferred in the opposite direction of the channel, and the first and second variety of frames is packaged for subsequent processing in the form of a package for transmission. The gateway server of a wireless communication system contains the transceiver and the processing subsystem. The wireless communication test system contains the gateway server emulator and the gateway server analogue computer. The device for response deceleration to instructions of controlling power contains a resource for saving working history during the set duration of time of power controlling instructions, the frames included in the first variety, a resource for generating of power controlling for the second variety of the frames transferred via the second communication channel. |
 Device and method of transmitting and receiving broadcast data using external coding in mobile communication system / 2333602Invention pertains to systems of transmitting broadcast information. The device for transmitting and receiving broadcast information in a mobile communication system externally codes envelopes of the broadcast set of data, and transmits it through time division multiplexing (TDM) for the externally coded envelopes. The transmitter transmits the broadcast message with parameters, containing information, indicating a specific sub-buffer, in which the corresponding broadcast service is stored. The receiver receives the broadcast message with parameters from the transmitter, and reflects the sub-buffer in the corresponding sub-block mask based on the broadcast message with parameters. The transmitter transmits envelopes for a set of broadcast services by TDM through the sub-block. The receiver selectively receives envelopes of the required broadcast services, using the sub-block mask, and decodes the selectively received envelopes. |
 Device and method of processing notification messages for mobile communication terminal / 2333601Invention pertains to mobile terminals, a device and method of processing notification messages of a mobile communication terminal. The device consists of a module for generating notification messages and a lead-out terminal for the generated notification message, and controller for the random image of the output notification message on a first or second imaging device in accordance with the type of the task, made on the second imaging device. |
 Method and device for compensating frequency error of heterodyne by controlling external conditions / 2333598Invention pertains to electronic circuits. The device for compensating frequency error of a heterodyne has a heterodyne, transceiver, at least one sensor for monitoring at least one variable, which amends the frequency error of the heterodyne and a circuit for determining parameters of the heterodyne, connected to a power amplifier, which is part of the transceiver, and at least one sensor. The method of compensating frequency error of a heterodyne is characterised by that, readings of at least one sensor are averaged and stored in the first mode. That sensor monitors factors which affect frequency error of the heterodyne. The readings include values of parameters of the power amplifier, which include the current working cycle and temperature. The power amplifier is part of the transceiver and in the first mode; an external source with stable frequency is used for the receiver as a source of reference frequency. Several values of frequency error of the heterodyne are averaged and stored in the first mode, determined by the transceiver by comparing the frequency of the external source with stable frequency to the output frequency of the heterodyne and the frequency error is compensated in the second mode, based on the readings of at least one sensor and frequency error of the heterodyne, monitored in the first mode. |
 Uplink transmission power control method / 2332797Invention includes the following stages: calculation of command values for variety of basic stations, transmitting power control commands to the terminal; reduction of downlink transmission power, with the command values, calculated for variety of basic stations, including at least one command for reducing power. The present invention also includes the stages of receiving the power control command transmitted from, at least, one basic station; calculation of, at least, one command value according to the received power control command, reduction of uplink transmission power, with the command value including a command for reducing power. |
 Starting/firing device / 2333597Starting/firing device is proposed consisting of identical n-number, n being a natural number exceeding 1, of switches/spark dischargers and 2(n-1) number of charging branches of the pulse Marx generator, its spark dischargers operating in a self-breakdown mode. The starting/firing devices consists of, at least, one pulse transformer connected to the pulse generator. At least one of the Marx generator charging branches generates, at a certain time and for a short period, at the adjacent spark discharger a voltage approximating to self-breakage value. The charging branch closes by an appropriate capacitor the spark discharger except for that on the outlet side. The pulsed transformer output winding acts in charging as an induction coil, while its input winding is connected to the pulsed generator. The voltage pulse generated by the said transformer of starting/firing the pulsed generator gets added to the charging voltage of the appropriate step capacitor to generate, for a short period, an overvoltage required to initiate a self-breakage of adjoining spark discharger. |
 Source of pulse magnetic field / 2331979Source of pulse magnetic field includes power supply, power switch, current distributor, current generator startup unit, storage capacitors, current generators, field-forming system, which contains no less than two solenoids and control switch. Field-forming system is available in two options. First design provides for all solenoids having equal length and being placed into each other so that lead-outs of start of winding are available from side of the system, whereas lead-outs of winding ends are available from the other side. In the second design, all solenoids have equal axial hollow and are placed end-to-end and in axial alignment with longitudinal line of field-forming system so that lead-out of start of one solenoid winding is arranged near lead-out of the other solenoid winding end. Power supply is connected to common bus (ground) and to current distributor input and current generator startup unit input via serial connection of power switch. Each current distributor output is coupled with one storage capacitor having output linked with common bus. Current generators are connected in parallel to storage capacitors. Windings of field-forming system throttles are connected in parallel to current generators diodes. Control signal outputs of generator startup unit are linked with control inputs of current generators, startup unit control switch being connected to input and output of current generator startup unit control. |
 Generator of pseudorandom sequences of impulses in uniform environment with programmaticably changeable structure / 2331915Invention refers to the computer science, cryptographic encoding and discrete information transfer and can be used for creation of pseudorandom sequences generators. The device consists of the timing pulse generator, control and adjustment unit and series of uniform cells with corresponding relations. |
 Method of obtaining ultradispersed metal oxides, and voltage pulse generator for implementing method / 2330808Invention can be applied in obtaining ultradispersed powder oxides of fusible metals used in ceramics, chemical power sources, catalyst matrixes and other fields. The method of obtaining ultradispersed metal oxides involves an electric discharge of amplitude over 500 V, pulse duration over 100 microseconds and under 2500 microseconds between needle points produced by stretching molten metal or metal mix in a gas oxygen-containing medium. Voltage pulse is applied to the needle point in the moment of the melt disruption. The method uses a voltage pulse generator including a step-up transformer comprising a magnetic core, two powerful composite transistors and a power source with one pole connected to the common point of transistor emitters through a throttle, and another pole connected to the common point of inductive loads of the transistor collectors. Primary transformer coils are used as inductive loads; collectors of each transistor are connected to the base of another transistor through the serial capacitor and variable resistors, while the bases of the transistors are connected through the respective resistors to that power source pole, to which collector loads of the transistors are connected; output voltage is yielded at the secondary transformer coil. |
 Voltage controlled broadband generator / 2330377Invention may be used in frequency synthesising circuits, general-purpose generators and, particularly, in data recovery channels in compact disk (CD) players and digital versatile disk players (DVD). Technical result is achieved in broadband generator, which includes dynamic loads control circuit containing operational amplifier (OA) (9) and transistor (T) (10), voltage reference (VR) (24), current source (CS) (11) and broadband core (2), containing CS (12, 13), capacitor 1 (K) (14), T (16-19) by introduction of comparator (3) with T (20-23) and buffer amplifier (BA) (4). Besides, T (10, 16, 17) are arranged as p-channeled transistors. Capacitor 2 (15) parallel to capacitor 1 (14) is introduced into broadband generator core (2). In addition, CS control inputs (11, 12, 13) are linked with output 4 (8), inverting OA input (9), which is connected with output 2 (6) through VR (24). Buffer amplifier input (4) is linked with transistor T input (21) and T output (23) of comparator (3). Buffer amplifier output (4) is connected with output 3 (7). |
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Voltage controlled broadband generator / 2330377 Invention may be used in frequency synthesising circuits, general-purpose generators and, particularly, in data recovery channels in compact disk (CD) players and digital versatile disk players (DVD). Technical result is achieved in broadband generator, which includes dynamic loads control circuit containing operational amplifier (OA) (9) and transistor (T) (10), voltage reference (VR) (24), current source (CS) (11) and broadband core (2), containing CS (12, 13), capacitor 1 (K) (14), T (16-19) by introduction of comparator (3) with T (20-23) and buffer amplifier (BA) (4). Besides, T (10, 16, 17) are arranged as p-channeled transistors. Capacitor 2 (15) parallel to capacitor 1 (14) is introduced into broadband generator core (2). In addition, CS control inputs (11, 12, 13) are linked with output 4 (8), inverting OA input (9), which is connected with output 2 (6) through VR (24). Buffer amplifier input (4) is linked with transistor T input (21) and T output (23) of comparator (3). Buffer amplifier output (4) is connected with output 3 (7). |
 Delayed pulses generator / 2328819Generator consists of power supply unit module, control unit module that switches on control panel, clock generator, controlling microcontroller, module of multi-channel delay device with preset number of output pulses channels. Input and output pulse channels are made in the form of optical transducers of signals. Control unit additionally contains programmed logical integral circuit (CU PLIC), every module of delay device additionally contains auxiliary microcontroller (DM MC), timer and programmed logical integral circuit of delay module (DM PLIC). In delayed pulses generator control unit may additionally contain communication interface, the group of outputs of which from one side is connected to outputs of controlling microcontroller, and group of outputs from the other side of interface is arranged with the possibility of connection to personal computer via COM-port. |
 Pulse generator / 2326482Invention is related generator of control pulses, for instance, in switching stabilizer. Technical result consists in the fact that without reduction of duration of synchronizing pulse, which serves as single interval of pulse generator time, width-pulse control is possible, at that the duration of pulse is changed in move out times, which are shorter than the single time interval. The duration of Ton_s signal of accurate division of pulse duration Vs, which comes from the processor of signal digital processing (PSDP) (17), is changed by duration of synchronizing pulse Tclk depending on the deviations of output voltage Vo. The device of time interval control (18), which receives signal of accurate division of pulse duration Vs, shapes in control signal Vd changing segments (30, 31) for change of duration of setting signal Vg change for shorter value of time ΔTd, than duration of synchronizing pulse Tclk. As a result, the division of duration of setting signal Vg is improved, being better, than duration of synchronizing pulse Tclk, i.e. time resolution of the PSDP (17). |
 Method of capacitive energy recuperation and devices for its implementation (versions) / 2325755Group of inventions may be used in impulse devices operating in the quasi-resonant or resonant mode, including voltage converters, pulse generators with or without magnetic compression. For the elimination of the emergency power oscillation mode and to increase their efficiency, a capacitive energy recuperation method is proposed involving the following: the recuperated capacitance is connected to the primary winding of the recuperation link pulse transformer, which is used to transform its voltage, and the recuperated energy is transferred to the filter capacitor or another receiver of this energy through a rectifying element. Three devices implementing this capacitive energy recuperation method are proposed: a voltage converter, a unipolar pulse generator, and a pulse generator with magnetic compression. The voltage threshold in the capacitor C1, at which the process of recuperation of its energy into the filter capacitor C0 begins, depends on the recuperation link transformation ratio and is determined using the formula: |
 Pulse magnetic generator and its versions / 2325026Pulse magnetic generator consists of power source, charging element, switching element, saturated transformer, load circuit, accumulating element and primary transformer winding designed as two conducting plates spring-shaped and separated with dielectric, and magnet connected to secondary winding of saturated transformer. Plates are supplied with current outputs located at start and end of every plate. Power source is connected to start of one plate and end of another one through charger. Diagonal opposite plate ends are sequenced through switch. Electric capacity functions as accumulating element. Electric capacity is formed between conducting plates functioning in turn as primary winding of saturated transformer. There is another version implying that accumulating element and secondary winding of saturated transformer are designed as two spring-shaped plates separated with dielectric equipped with current outputs located at start and end of every plate, and power source is connected to plates ends through charger and ends of plates are sequenced through switch. |
 Superhigh frequency wide band random signal generator / 2332780According to proposed design, SHF wide band random signal generator, represents series-connected SHF wide-band amplifier, directional coupler, load, and feedback circuit connected between the other output of directional coupler and input of SHF wide-band amplifier and containing nonlinear element. The latter is designed in the form of magnetic field regulated wide band nonlinear pass-band filter on magneto-static waves, having incident area of amplitude characteristic and simultaneously providing delay of signal travelling in feedback circuit. |
FIELD: electrical engineering.
SUBSTANCE: proposed method incorporates generating chaotic sequence of pseudorandom signals by numeric integration of a non-linear set of differential equations with the dynamic chaos and the variable step of time count directly proportional to the depth of modulation and the control effect time function.
EFFECT: improved correlation characteristics of generated signals.
2 cl, 1 dwg, 1 tbl
The invention relates to the field of radio engineering, in particular to the formation of pseudo-random signals, and can be used in systems with slojnimi signals.
Known analogue of the proposed method lies in the fact that a pseudo-random sequence of pulses is formed by forming each pulse at the moment when the sawtooth is the result of integrating the DC voltage increases to a voltage threshold reset (A.S. USSR № 733093. The method of forming a pseudo-random sequence of pulses and a device for its implementation. - IPC2: NC 3/84. - Bull. No. 17, 05.05.80). The disadvantage of analogue is that the accuracy of controlling the dispersion of intervals between pulses depends on the accuracy of formation of the sawtooth voltage.
Also known analogue of the proposed method lies in the fact that chaotic oscillations are generated by the generator of chaotic oscillations, containing a resistor, the first and second findings of which are connected with the first pins respectively of the first and second capacitors (Patent RU № 2246790. The generator of chaotic oscillations. - IPC7: NV 29/00. - Bull. No. 5, 20.02.2005). The disadvantage of analogue is the lack of reproducibility of the statistical characteristics of the oscillations generated by the generator when switching from one the th sample to another.
The closest analogue is the way of generating a chaotic sequence of pseudorandom signals, which consists in transforming a random sequence of signals via numerical integration of the nonlinear system of differential equations with dynamical chaos in a chaotic sequence of pseudo-random signals with a constant time step count. (Dmitriev A.S., Panas A.I. Dynamical chaos: new media for communication systems. - M.: Publishing house of Physical and mathematical literature, 2002. - S). This analog adopted for the prototype.
The disadvantage of this method, taken as a prototype, is a relatively large time intervals correlation generated signals.
The main task, which is aimed by the invention is the reduction of time intervals correlation influencing the improvement of the correlation characteristics of the generated signals.
The technical result of the invention is to improve the correlation characteristics of the generated chaotic sequence of pseudo-random signals.
This technical result is achieved in that, in the known method of forming a pseudo-random signals, which consists in transforming a random sequence of signals posredstvennoj integration nonlinear systems of differential equations with dynamical chaos in a chaotic sequence of pseudo-random signals, according to the proposed technical solution,
chaotic sequence of pseudo-random signals form integration with variable step time count is directly proportional to the modulation depth and time function of the control action determined by the formula:
,
where ti- step time reference
i is the number of steps
Δt is a constant step,
m is the modulation depth fluctuations,
fitemporal function of the control action, for example, fi=sgn(Xi), where Xi- signal value;
the modulation depth charge within m∈(0,M], where M>1.
The drawing shows graphs of correlation functions of the signal Xiof the Lorenz system.
The essence of the proposed method of forming a pseudo-random signals is as follows.
Initially generated a random sequence of signals is converted into a chaotic sequence of pseudo-random signals through numerical integration of the nonlinear system of differential equations with dynamic chaos, such as the Lorenz system,
Xi+1=Xi+ti(-σXi+σYi),
Yi+1=Yi+ti(rXi-Yi-XiZi),
Zi+1=Zi+ti(-bZi+XiYi),
with ereminym step time reference directly proportional to the modulation depth and time function of the control action determined by the formula:
ti=Δt(1+mfi-1),
where Xi, Yi, Zi- pseudo-random signals;
i is the number of steps;
Δt - constant step;
m is the modulation depth of impact, m∈ (0,M], where M>1;
ti- step time reference;
fi-1- time function controlwhere
X*, Y*, Z* coordinates of the equilibrium points of the system;
and is a constant equal to 0.1, 0.5, 0.8;
X*=Y*=Z*=r-1.
An example of implementing the method of forming a chaotic sequence of pseudo-random signals.
Initially generated random sequence X0=8.86, Y0=8.97 and Z0=27 was converted by numerical integration of the Lorenz system with the parameters of equations σ=10, r=28 and b=8/3 with variable step time reference tidetermined by the formula
ti=Δt(1+mfi-1), where Δt=0.01, m∈(0,10].
The results of the evaluation of correlation functions R(ti/Δt) of chaotic signals shown in the figure, where the solid line is for m=10, dashed line for m=0.
The use of the proposed method obtained significant is ukrashenie time intervals correlation chaotic signal sequence, shown in the table.
| Table. The changes within time intervals of correlation |
||||||
| And | m | |||||
| 0.1 | 2 | 0.82 0.9... | 0.83 0.9... | 0.79 0.92... | 0.82...1.15 | 0.28 2.02... |
| 5 | 0.73 0.75... | 0.72 0.75... | 0.72 0.74... | 0.58 0.73... | 0.2...0.82 | |
| 10 | 0.57 0.61... | 0.58 0.61... | 0.55 0.62... | 0.43...at 0.57 | 0.18...0.5 | |
| 0.5 | 2 | 0.64 0.75... | 0.64 0.72... | 0.63 0.69... | 0.56 0.77... | 0.21 0.87... |
| 5 | 0.43 0.46... | 0.43 0.47... | 0.4...0.45 | 0.33...at 0.43 | 0.12...at 0.43 | |
| 10 | 0.28 0.33... | 0.32 0.34... | 0.3 0.33... | 0.27 0.31... | 0.08 0.28... | |
| 0.8 | 2 | 0.53...at 0.58 | 0.52...at 0.57 | 0.48...at 0.57 | 0.41...at 0.58 | 0.18...0.6 |
| 5 | 0.28 0.31... | 0.28 0.29... | 0.25...0.3 | 0.21 0.28... | 0.08 0.25... | |
| 10 | 0.13 0.15... | 0.15...at 0.16 | 0.14 0.15... | 0.15 0.17... | 0.05...at 0.18 |
Where,
,
,
,
- correlation values for the levels of 0.8, 0.6, 0.4, 0.2, 0.0 relative to the maximum value of correlation functions τ0without external influence.
1. The method of forming a chaotic sequence of pseudorandom signals, which consists in transforming a random sequence of signals via numerical integration of the nonlinear system of differential equations with dynamical chaos in a chaotic sequence of pseudo-random signals, characterized in that the chaotic sequence of pseudo-random signals form integration with variable step time count is directly proportional to the modulation depth and time function of the control action determined by the formula:
ti=Δt(l+mfi-1);
where ti- step time reference;
i is the number of steps;
Δt - constant step;
m is the modulation depth fluctuations;
fitemporal function of the control action, for example, fi=sgn(Xi),
where Xi- signal value.
2. The method according to claim 1, characterized in that the modulation depth charge within m∈(0,M], where M>1.