RU131261U1 - MULTI-OPTIONAL ADAPTIVE INFORMATION TRANSMISSION SYSTEM - Google Patents

Abstract

A multi-parameter adaptive information transmission system containing a digital information source, the output of which is connected to the first input of the buffer storage device, with the first input of a dynamic counter, the output of which is connected to the first input of the information availability key in the buffer, the output "0" of which is connected to the input of the acknowledgment buffer; the first output of the buffer storage device is connected to the input of a digital information source; the output "1" of the information availability key in the buffer is connected to the second input of the buffer storage, the second output of which is connected to the second input of the dynamic counter; the coding unit, the output of which is connected to the first input of the adder modulo two, the output of which is connected to the first input of the modulator, the output of which is connected to the first input of the power amplifier, the output of which is connected to the input of the antenna-feeder device, the output of which is connected to the second inputs of the control receivers and with the fourth input of the receiver; a reference frequency generation unit, the first output of which is connected to the first input of the electronic clock, with the input of the counter 1.3, the output of which is connected to the input 1.1 of the resolver, as well as with the first inputs of the control receivers, the outputs of which are connected to the inputs 1 ... K of the resolver; the first output of the reference frequency generation unit is also connected to the second input of the third trigger, the output of which is connected to the second input of the information availability key in the buffer; the first output of the reference frequency generation unit is also connected to the second input of the second trigger, the output of which is connected to the input 1.2 of the service information storage unit; first output of the reference frequency generating unit

Description

The invention relates to the field of radio engineering and can be used in information transmission devices to increase information security, noise immunity and reliability of the transmitted digital signal in a communication network.

A device is known, described in RF patent No. 2142200, Н04В 7/005, 05.26.1998, "Frequency adaptive radio line for transmitting medium-speed flows of discrete information", in which information is transmitted on many frequency subchannels of a multi-frequency group channel, the number is counted information transmission errors in subchannels, if the error frequency in a particular subchannel is exceeded, it is replaced, when the frequency of the change of subchannels is exceeded, the frequency of the group informational subchannel is changed .

The disadvantage of this device is that it adapts only one of the many parameters of the transmitted signal, the simultaneous use of several frequency subchannels for communication degrades the EMC of the described device.

The closest in technical essence to the proposed one is the device described in RF patent No. 2441330, H04L 5/02, November 9, 2010, “Multiparameter adaptive information transfer system”, adopted as a prototype.

The prototype device consists of 2 identical transceivers.

The transceiver contains: a digital information source whose output is connected to the first input of the buffer storage device and the first input of the dynamic counter, the first output of the buffer storage device is connected to the input of the digital information source, the second output of the buffer storage device is connected to the first input of the first adder and the second input of the dynamic counter; the output of the first adder is connected to the first input of the coding unit, the output of which is connected to the first input of the second adder, the output of which is connected to the first input of the adder modulo two, the output of which is connected to the first input of the modulator, the output of which is connected to the first input of the power amplifier, the output of which is connected with the input of the antenna-feeder device; the output of the dynamic counter is connected to the first input of the information availability key in the buffer, the output “0” of which is connected to the input of the acknowledgment buffer, the output of which is connected to the second input of the first adder, and the output “1” of the information availability key in the buffer is connected to the second input of the buffer storage; the first output of the reference frequency generation unit is connected to the third input of the dynamic counter, with the second input of the second trigger, the output of which is connected to the input 1.1 of the service data storage unit, the output of which is connected to the second input of the second adder; the first output of the reference frequency generation unit is also connected to the second input of the third trigger, the output of which is connected to the second input of the information key in the buffer, the first output of the reference frequency generation unit is also connected to the first input of the electronic clock, the output of which is connected to the input 1.3 of the service data storage unit , with the first input of the GPS of the NPS, the first output of which is connected to the second input of the adder modulo two, and the second output of the GPS of the NPS is connected to the second input of the receiver; the first output of the reference frequency generation unit is also connected to the first input of the counter 1.3, the output of which is connected to the input 1.1 of the resolving device, with the first inputs of the control receivers 1 ... K, with the first input of the overhead information allocation unit; the first output of the reference frequency generation unit is also connected to the first input of the first frequency synthesizer and to the third input of the receiver; the output of the electronic clock is also connected to the input 1.1 of the PSP RFP generation unit, the first output of which is connected to the third input of the first frequency synthesizer, the output of which is connected to the second input of the modulator; the second output of the PSP frequency hopping generation unit is connected to the fourth input of the first frequency synthesizer and to the first input of the receiver; the initial setting of the allowed frequencies is supplied to the input 1.2 of the PSP PPRCH generation block, the second output of the reference frequency generation block is connected to the first input of the second trigger, the third output of the reference frequency generation block is connected to the first input of the third trigger and the first input of the decoding block, the fourth output of the reference generation block the frequencies are connected to the second input of the GPS NPS; the fifth output of the reference frequency generation unit is connected to the second input of the frequency synthesizer; the output of the antenna-feeder device (AFU) is connected to the second inputs of the control receivers 1 ... K, the outputs of which are connected respectively to the inputs 1 ... K of the resolving device, the output 1.1 of which is connected to the input 1.3 of the PSP PPRCh generation unit; the outputs 1 ... To the solver are connected respectively to the inputs 1 ... To the PSPPPP generation block and the inputs 1 ... To the service information storage unit, the AFU output is also connected to the fourth input of the receiver, the first output of which is connected to the second input of the service information allocation unit, the first output which is connected to the second input of the decoding unit, the first output of which is connected to the input of the recipient of digital information; the first output of the service information allocation unit is also connected to the second input of the encoding unit and the input 1.4 of the service information storage unit, the second output of the receiver is connected to the third input of the decoding unit, the second output of the service information allocation unit is connected to the input 1.2 of the deciding device, the third output of the service information allocation unit connected to the second input of the electronic clock, the fourth output of the service information allocation unit is connected to the input of the reference frequency generation unit, to the input 1.2 of the storage unit service information, the second output of the decoder is connected to the first inputs of the counters 1.4, 1.5, the third output of the decoding unit is connected to the second inputs of the counters 1.4, 1.5, the outputs of which are connected respectively to the first and second inputs of the processor, the first output of which is connected to the input of the transmission speed control unit, the output of which is connected to the input of the reference frequency generation unit and to the input 1.2 of the service information storage unit; the second processor output is connected to the input of the encoding control unit, the output of which is connected to the second input of the encoding unit and to the input 1.4 of the service information storage unit, the third processor output is connected to the input of the transmission power control unit, the output of which is connected to the second input of the power amplifier.

The disadvantage of this device is that its operation is subject to the effects of packet errors, for example, as a result of fading, and the additional ability to increase the flexibility and versatility of the system is not used due to the fact that the variation in the type of signal modulation is not used.

The objective of the invention is to make the system resistant to the effects of packet errors, as well as increasing the maximum speed of information transfer in a favorable jamming environment, increasing the flexibility and versatility of the system.

The technical result of the present invention is to increase the noise immunity of a communication system with respect to packet errors and to increase the maximum information transfer rate and system versatility by varying the type of modulation of the transmitted signal.

The technical result is achieved in that in a multi-parameter adaptive information transmission system containing a digital information source, the output of which is connected to the first input of the buffer storage device, with the first input of a dynamic counter, the output of which is connected to the first input of the information availability key in the buffer, the output “0” of which connected to the input of the acknowledgment buffer; the first output of the buffer storage device is connected to the input of a digital information source; the output "1" of the information availability key in the buffer is connected to the second input of the buffer storage, the second output of which is connected to the second input of the dynamic counter; the coding unit, the output of which is connected to the first input of the adder modulo two, the output of which is connected to the first input of the modulator, the output of which is connected to the first input of the power amplifier, the output of which is connected to the input of the antenna-feeder device, the output of which is connected to the second inputs of the control receivers and with the fourth input of the receiver; a reference frequency generation unit, the first output of which is connected to the first input of the electronic clock, with the input of the counter 1.3, the output of which is connected to the input 1.1 of the resolver, as well as with the first inputs of the control receivers, the outputs of which are connected to the inputs 1 ... K of the resolver; the first output of the reference frequency generation unit is also connected to the second input of the third trigger, the output of which is connected to the second input of the information availability key in the buffer; the first output of the reference frequency generation unit is also connected to the second input of the second trigger, the output of which is connected to the input 1.2 of the service information storage unit; the first output of the reference frequency generation unit is also connected to the third input of the dynamic counter, with the input 1.1 of the PSP PPRCh generation unit; the second output of the reference frequency generation unit is connected to the first input of the second trigger; the third output of the block generating the reference frequencies is connected to the first input of the third trigger; the fourth output of the block generating the reference frequencies is connected to the input of the GPS SPS, the first output of which is connected to the second input of the adder modulo two; the first processor output is connected to the input of the coding control unit, the output of which is connected to the input 1.5 of the service information storage unit and the second input of the coding unit; the second output of the processor is connected to the input of the transmission rate control unit, the output of which is connected to the first input of the reference frequency generation unit and input 1.3 of the service information storage unit; the third output of the processor is connected to the input of the transmission power control unit, the output of which is connected to the third input of the power amplifier; the second output of the GPS BSS is connected to the second input of the receiver; the first output of the PSP frequency hopping generation unit is connected to the second input of the first frequency synthesizer; the second output of the PSP frequency hopping generation unit is connected to the third input of the first frequency synthesizer, the output of which is connected to the fourth input of the modulator; the second output of the PSP frequency hopping generation unit is also connected to the first input of the receiver; outputs 1 ... To the deciding device are connected respectively to the inputs 1 ... To the storage unit of service information and to the inputs 1 ... To the generation unit of the SRP PPRCH; the input 1.2 of the PSP RFP generation unit is supplied with the initial settings of the allowed frequencies (for example, by entering from the keyboard by the operator); the second output of the overhead information allocation unit is connected to the input 1.2 of the deciding device, the output 1.1 of which is connected to the input 1.3 of the generation unit of the PSS frequency converter; the third output of the service information allocation unit is connected to the second input of the electronic clock, the second output of which is connected to the input 1.4 of the service information storage unit; the fourth output of the overhead information allocation unit is connected to the first input of the reference frequency generation unit; the fifth output of the service information extraction unit is connected to the first input of the decoding unit, the input 1.5 of the service information storage unit and to the second input of the encoding unit; the output of counter 1.4 is connected to the first input of the processor; the output of the counter 1.5 is connected to the second input of the processor; according to the invention, a series unit for calculating and adding a checksum, a second buffer storage device, an interleaver, the first output of which is connected to the third input of the second buffer storage device; the output of the acknowledgment buffer is connected to the second input of the calculation and add checksum unit; the second output of the buffer storage is connected to the first input of the calculation and adding a checksum; the first output of the service information storage unit is connected to the third input of the calculation and add checksum unit; the second output of the service information storage unit is connected to the fourth input of the calculation and add checksum unit, with the second inputs of the second buffer storage, interleaver, modulator, power amplifier, with the third input of the encoding unit and with the first input of the first frequency synthesizer; the second output of the interleaver is connected to the first input of the coding unit; the first output of the reference frequency generation unit is connected to the input 1.1 of the service information storage unit; the fourth processor output is connected to the input of the control unit of the modulation type, the output of which is connected to the input 1.6 of the service information storage unit and the third input of the modulator; the first output of the PSP RFP generation unit is connected to the input 1.7 of the service information storage unit; the first output of the electronic clock is connected to the second input of the reference frequency generation unit; the output of the counter 1.3 is connected to the first input of the service information allocation unit and the third input of the receiver; a third buffer storage device, a de-interleaver, a checksum verification unit, the first output of which is connected to a second input of a service information extraction unit, the first output of which is connected to an input of a digital information receiver, in series; the output of the receiver is connected to the second input of the decoding unit, the output of which is connected to the second input of the third buffer storage; the second output of the deinterleaver is connected to the first input of the third buffer storage; the second output of the checksum verification unit is connected to the first inputs of the counters 1.4, 1.5; the third output of the checksum verification unit is connected to the second inputs of the counters 1.4, 1.5; the sixth output of the service information allocation unit is connected to the fifth input of the receiver, with the input 1.6 of the service information storage unit and with the third input of the modulator.

Figure 1 presents a schematic diagram of a transceiver.

Figure 2 presents the timing diagram of the exchange of information.

Figure 3 presents the timing diagram of the entry into synchronism.

Figure 4 presents a block diagram of the generation of a pseudo-random sequence of pseudo-variable tuning of the operating frequency.

Figure 5 shows the overall structure of the package.

Figure 6 presents the receiver circuit.

7 is a block diagram of the allocation of service information.

On Fig presents a diagram of a solving device.

Figure 9 shows the conversion of the original digital signal into the studied signal.

The proposed multi-parameter adaptive information transmission system consists of two identical transceivers. The transceiver contains: a digital information source 1, the output of which is connected to the first input of the buffer drive 2 and the first input of the dynamic counter 3, the first output of the buffer drive 2 is connected to the input of the digital information source 1, the second output of the buffer drive 2 is connected to the first input of the calculation and addition unit checksum 4 and the second input of the dynamic counter 3; the output of the calculation and adding checksum unit 4 is connected to the first input of the second buffer storage 5, the output of which is connected to the input of the interleaver 6, the second output of which is connected to the first input of the encoding unit 7, the output of which is connected to the first input of the adder modulo two 8, the output of which connected to the first input of the modulator 9, the output of which is connected to the first input of the power amplifier 10, the output of which is connected to the input of the antenna-feeder device 11; the output of the dynamic counter 3 is connected to the first input of the information availability key in the buffer 12, the output “0” of which is connected to the input of the acknowledgment buffer 13, the output of which is connected to the second input of the calculation unit and add the checksum 4, and the output “1” of the information availability key in the buffer 12 is connected to the second input of the buffer drive 2; the first output of the interleaver 6 is connected to the third input of the second buffer storage 5; the first output of the reference frequency generation unit 14 is connected to the third input of the dynamic counter 3, with the second input of the second trigger 15, the output of which is connected to the input 1.2 of the service information storage unit 16, the first output of which is connected to the third input of the calculation and add checksum unit 4; the first output of the reference frequency generation unit 14 is also connected to the second input of the third trigger 17, the output of which is connected to the second input of the information key in the buffer 12; the first output of the reference frequency generation unit 14 is also connected to the first input of the electronic clock 18, the first output of which is connected to the second input of the reference frequency generation unit 14; the first output of the reference frequency generation unit 14 is also connected to the first input of the counter 1.3 19, the output of which is connected to the input 1.1 of the resolver 20, with the first inputs of the control receivers 21.1 ... 21.K, with the first input of the service information allocation unit 22, the first output of which is connected with the input of the recipient of digital information 23; the output of the counter 1.3 19 is also connected to the third input of the receiver 26; the first output of the reference frequency generating unit 14 is also connected to the input 1.1 of the service information storage unit 16, the second output of which is connected to the fourth input of the calculation and adding a checksum 4, with the third input of the encoding unit 7, with the first input of the first frequency synthesizer 24 and with the second the inputs of the second buffer drive 5, interleaver 6, modulator 9, power amplifier 10; the first output of the reference frequency generation unit 14 is also connected to the input 1.1 of the pseudo-random sequence generating unit of the pseudo-variable tuning of the operating frequency (PSS RFP) 25, the first output of which is connected to the second input of the first frequency synthesizer 24, the output of which is connected to the fourth input of the modulator 9; the first output of the PSP PPRCh generation unit 25 is also connected to the input 1.7 of the service information storage unit 16; the second output of the PSP RFP generation unit 25 is connected to the third input of the first frequency synthesizer 24 and to the first input of the receiver 26, the output of which is connected to the second input of the decoding unit 27, the output of which is connected to the second input of the third buffer storage 28, the output of which is connected to the input of the deinterleaver 29 the first output of which is connected to the input of the checksum verification unit 30, the first output of which is connected to the second input of the service information extraction unit 22, the second output of which is connected to the input 1.2 of the solving device va 20, output 1.1 of which is connected to the input of 1.3 unit generation SAPs FH 25; the second output of the reference frequency generation unit 14 is connected to the first input of the second trigger 15; the third output of the reference frequency generation unit 14 is connected to the first input of the third trigger 17; the fourth output of the reference frequency generation unit 14 is connected to the input of the noise-like signal pseudo-random sequence generator (GPSS SHPS) 31, the first output of which is connected to the second adder input modulo two 8; the second output of the GPSS ShPS 31 is connected to the second input of the receiver 26; the first output of the processor 32 is connected to the input of the encoding control unit 33, the output of which is connected to the input 1.5 of the service information storage unit 16, as well as to the second input of the encoding unit 7; the second output of the processor 32 is connected to the input of the transmission speed control unit 34, the output of which is connected to the first input of the reference frequency generation unit 14 and the input 1.3 of the service information storage unit 16; the third output of the processor 32 is connected to the input of the transmission power control unit 35, the output of which is connected to the third input of the power amplifier 10; the fourth output of the processor 32 is connected to the input of the control unit of the modulation type 36, the output of which is connected to the input 1.6 of the service information storage unit 16 and to the third input of the modulator 9; the outputs of the control receivers 21.1 ... 21.K are connected to the corresponding inputs of the deciding device 20, the outputs 1 ... To which are connected to the corresponding inputs of the service information storage unit 16 and to the corresponding inputs of the generation unit of the PSP ППРЧ 25; the input 1.2 of the generation block of the SRP PPRCH 25 receives the initial settings of the allowed frequencies (for example, by entering from the keyboard by the operator); the second output of the deinterleaver 29 is connected to the first input of the third buffer storage 28; the second output of the checksum verification unit 30 is connected to the first inputs of the counter 1.4 37 and the counter 1.5 38, the outputs of which are connected respectively to the first and second inputs of the processor 32; the third output of the checksum verification unit 30 is connected to the second inputs of the counter 1.4 37 and the counter 1.5 38; the first output of the service information extraction unit 22 is connected to the input of the digital information receiver 23; the third output of the service information extraction unit 22 is connected to the second input of the electronic clock 18, the output of which is connected to the input 1.4 of the service information storage unit 16; the fourth output of the service information allocation unit 22 is connected to the first input of the reference frequency generation unit 14 and to the input 1.3 of the service information storage unit 16; the fifth output of the service information extraction unit 22 is connected to the first input of the decoding unit 27, with the input 1.5 of the service information storage unit 16 and with the second input of the encoding unit 7; the sixth output of the service information extraction unit 22 is connected to the fifth input of the receiver 26, with the input 1.6 of the service information storage unit 16 and with the third input of the modulator 9; the output of the antenna-feeder device 11 is connected to the second inputs of the control receivers 21.1 ... 21.K and to the fourth input of the receiver 26.

A device that implements the proposed adaptive system for transmitting digital information, works as follows.

The exchange of information occurs similarly to the prototype with time separation so that the entire exchange time is divided into a sequence of equal windows for transmission and windows for reception (figure 2). The transmission window and the reception window go sequentially one after another, that is, one of the stations transmits information in even windows, and reception in odd windows, and the other vice versa.

Before establishing communication in the radio line at both its ends, the initial installation of frequencies allowed for communication is performed to ensure EMC with adjacent radio facilities. As an initial setting, a sequence of K zeros and ones (K is the number of frequencies used for radio communication) is fed to the input 1.2 of the PSP PPRCh 25 generation block, in which one means that the frequency is allowed, zero is forbidden. Tables of allowed frequencies at both ends of the radio link should be the same. The use of the initial settings will be presented in more detail below when considering the operation of the PPRCH 25 bandwidth generation unit. To enter the communication session, one of the leading transceivers starts transmitting test packets at a fixed frequency, which is known at the receiving end, and low speed to increase noise immunity. The contents of the test packets are read from the acknowledgment buffer 13 and do not contain useful information. The slave transceiver performs passive reception, upon receipt of a test packet, it selects the current time from its service part in the service information extraction unit 22 and writes it to the electronic clock 18, in the next window transmits confirmation of its acceptance in the form of a response packet to the master transceiver. Upon receipt of a response packet from the slave transceiver, it is considered that the transceivers at both ends of the radio link are in synchronism. The master transceiver sets the triggers 15, 17 to the closed position; resets counter 1.3 19 to zero and starts the process of exchanging information in the next window, which will be a transmission window for him. A timing diagram explaining this algorithm is shown in FIG. Consider the operation of the transceiver when synchronism has already been achieved at both ends of the radio link.

, α - коэффициент деления. Коэффициент деления для счетчика 14.2.1.1 выбирается таким образом, чтобы он переполнялся, когда на его вход поступит количество тактовых импульсов, которое помещается в размер окна (размер окна выбирается заранее). Таким образом, на выходе счетчика 14.2.1.1 появляются тактовые импульсы с частотой следования окон приема/передачи и поступают на первый выход блока генерации опорных частот 14. Коэффициенты деления счетчиков 14.2.1…14.2.К выбираются в соответствии со скоростями передачи информации, причем частота следования импульсов на выходе счетчика 14.2.1 - наименьшая, на выходе счетчика 14.2.К - наибольшая. Чем больше частота следования импульсов на выходе счетчика, тем меньше длительность считываемых этими импульсами из элементов памяти битов полезной информации, а значит, на том же временном промежутке поместится больше бит полезной информации и скорость передачи будет выше. Выбор скорости происходит посредством первого коммутатора 14.3, управляющие сигналы на который поступают со входа блока генерации опорных частот 14. Управляющие сигналы на изменение скорости могут поступать как с выхода блока управления скоростью передачи 34, так и с четвертого выхода блока выделения служебной информации 22, чем обеспечивается подстройка приемопередатчика под изменения скорости, произошедшие на дальнем конце радиолинии. Биты полезной информации могут передаваться на различных скоростях передачи, биты же служебной информации всегда передаются на наименьшей скорости из набора для большей помехоустойчивости и упрощения их выделения на приемном конце. Для этого импульсы с выхода счетчика 14.2.1 поступают на второй вход счетчика 14.4, который переполняется при поступлении на его вход r импульсов, где r - число бит служебной информации в пакете данных. При переполнении, на его выходе появляется импульс сигнализации о начале части полезной информации пакета, поступающий на пятый выход блока генерации опорных 1 частот, на четвертый вход второго коммутатора 14.5, который подключает на свой выход сигнал со своего второго входа при поступлении импульса на первый вход и сигнал со своего третьего входа при поступлении импульса на четвертый вход. На второй вход второго коммутатора 14.5 поступают импульсы, задающие постоянную скорость передачи r служебных бит пакета, на третий вход - импульсы, задающие адаптируемую переменную скорость передачи бит полезной информации пакета. Тактовый импульс начала нового окна, поступающий с выхода счетчика 14.2.1.1, сбрасывает счетчик 14.4 в нулевое состояние. Первый импульс с выхода счетчика 14.2.1.1, поступающий на первый триггер 14.6, «открывает» его и позволяет сигналам, поступающим на его вход, проходить без изменений на его выход. Это необходимо во избежание формирования неправильного первого пакета, когда счетчик 14.2.1.1 еще не выдал импульс на свой выход, а счетчики 14.2.1…14.2.К уже начали переполняться и выдают импульсы на свои выходы. Ключ 14.7 переключается в положение «1» импульсом начала окна с выхода счетчика 14.2.1.1, и импульсы, предназначенные для считывания служебной информации из блока хранения служебной информации 16, поступающие на его первый вход с выхода счетчика 14.2.1, выдаются на соответствующий выход «1» ключа. Когда счетчик 14.4 отсчитает r служебных бит пакета и переполнится, импульс с его выхода, поступающий на третий вход первого ключа 14.7, переключает его в положение «0», и импульсы считывания полезной информации из буферного накопителя 11 или буфера квитирования 56, поступающие с выхода одного из счетчиков 14.2.1…14.2.К, идут на выход «0» первого ключа 14.7. В результате работы описанного алгоритма, начиная с момента появления импульса на выходе счетчика 14.2.1.1, означающего начало очередного окна, с выхода «1» первого ключа 14.7 на второй выход блока генерации опорных частот 14 поступает r импульсов с периодичностью переполнения счетчика 14.2.1 и в соответствии с наименьшей скоростью передачи - импульсы считывания битов служебной информации, после чего первый ключ 14.7 переключается в положение «0», и с его выхода «0» на третий выход блока генерации опорных частот 14 поступает q импульсов с периодичностью переполнения одного из счетчиков 14.2.1…14.2.К в зависимости от управляющего сигнала выбора скорости передачи, поступающего на вход блока генерации опорных частот 14 - импульсы считывания битов полезной информации. При этом r - постоянная величина, а q - изменяется в соответствии с сигналами адаптации скорости передачи.From the output of the clock generator 14.1 of the reference frequency generation unit 14 (see Fig. 4), the clock pulses with a frequency of F ₀ simultaneously arrive at the inputs of the counters 14.2.1.1, 14.2.1 ... 14.2.K and the fourth output of the reference frequency generation unit 14. The counters 14.2.1.1, 14.2.1 ... 14.2.K issue a clock pulse to their output when a certain number of clock pulses are accumulated at their input, after which they are reset to zero and start counting again. They perform the function of discrete frequency dividers, that is, if the input counter receives pulses at a frequency ω _1, appear at its output pulses at a frequency ω _2. Each output pulse appears when the counter dials α clocks at the input, which means the relation:

, α is the division coefficient. The division coefficient for the counter 14.2.1.1 is selected so that it overflows when the number of clock pulses arrives at its input, which is placed in the window size (the window size is selected in advance). Thus, at the output of the counter 14.2.1.1, clock pulses appear with the repetition frequency of the receive / transmit windows and are sent to the first output of the reference frequency generation unit 14. The division factors of the counters 14.2.1 ... 14.2.K are selected in accordance with the information transfer rates, and the frequency following pulses at the output of the counter 14.2.1 - the smallest, at the output of the counter 14.2.K - the largest. The higher the pulse repetition rate at the output of the counter, the shorter the bits of useful information read from these memory elements from memory elements, which means that more useful information bits will fit in the same time interval and the transmission speed will be higher. The speed is selected by means of the first switch 14.3, the control signals to which come from the input of the reference frequency generation unit 14. The control signals to change the speed can come either from the output of the transmission speed control unit 34, or from the fourth output of the overhead information allocation unit 22, which ensures adjustment of the transceiver to changes in speed that occurred at the far end of the radio link. Bits of useful information can be transmitted at different transmission rates, while bits of overhead information are always transmitted at the lowest speed from the set for greater noise immunity and simplification of their selection at the receiving end. To do this, the pulses from the output of the counter 14.2.1 go to the second input of the counter 14.4, which overflows when r pulses arrive at its input, where r is the number of bits of service information in the data packet. When overflowing, an output signal pulse appears at the beginning of a part of the useful information of the packet, which goes to the fifth output of the reference 1 frequency generating unit, to the fourth input of the second switch 14.5, which connects the signal from its second input to the output when the pulse arrives at the first input and a signal from its third input when a pulse arrives at the fourth input. The second input of the second switch 14.5 receives pulses specifying a constant transmission rate r of the service bits of the packet, and the third input receives pulses specifying an adaptable variable bit rate of the useful information of the packet. The clock pulse of the beginning of a new window, coming from the output of the counter 14.2.1.1, resets the counter 14.4 to zero. The first pulse from the output of the counter 14.2.1.1, arriving at the first trigger 14.6, "opens" it and allows the signals arriving at its input to pass unchanged to its output. This is necessary to avoid the formation of an incorrect first packet, when the counter 14.2.1.1 has not yet issued a pulse to its output, and the counters 14.2.1 ... 14.2.K have already begun to overflow and give out pulses to their outputs. The key 14.7 is switched to position "1" by the pulse of the beginning of the window from the output of the counter 14.2.1.1, and the pulses intended for reading service information from the service information storage unit 16, received at its first input from the output of the counter 14.2.1, are issued to the corresponding output " 1 "key. When the counter 14.4 counts the r overhead bits of the packet and overflows, the pulse from its output arriving at the third input of the first key 14.7 switches it to the “0” position, and the read pulses of useful information from the buffer storage 11 or the acknowledgment buffer 56 coming from the output of one from the counters 14.2.1 ... 14.2.K, go to the “0” output of the first key 14.7. As a result of the described algorithm, starting from the moment a pulse appears at the output of the counter 14.2.1.1, which means the beginning of the next window, r pulses are received from the output “1” of the first key 14.7 to the second output of the reference frequency generation unit 14 with a counter overflow frequency of 14.2.1 and in accordance with the lowest transmission speed, read pulses of overhead information, after which the first key 14.7 switches to the “0” position, and q pulses from the output of “0” to the third output of the reference frequency generation unit 14 the overflow of one of the counters 14.2.1 ... 14.2.K, depending on the control signal for selecting the transmission speed, which is input to the reference frequency generating unit 14 — read pulses of useful information bits. In this case, r is a constant value, and q is changed in accordance with the adaptation signals of the transmission rate.

In parallel with this, information is transmitted to the transmission (if it is currently available) from the output of the digital information source 1 to the first input of the buffer storage 2 until it overflows with an overflow alarm pulse from its first output to the input of the digital data source 1 will not interrupt their receipt. The digital information source 1 periodically tries to write new data to the buffer storage 2. If a part of the data is read from the buffer storage 2 and transmitted, then the buffer receives new data, otherwise it overwhelms the recording of new information with an overflow signal. The signal from the output of the digital information source 1 also goes to the first input of the dynamic counter 3, the value of which increases when the bits of useful information are written to the buffer storage 2 by a number corresponding to the number of bits received in the buffer, and decreases when they are read and sent for transmission to the corresponding number of bits read from the buffer by parallel feeding the read bits from the second output of the buffer storage 2 to the second input of the dynamic counter 3. The value of this counter in each moment NT time shows how many bits of useful information are waiting for transmission in buffer storage 2, if any. From the first output of the reference frequency generation unit 14, the window start pulse arrives at the second inputs of the triggers 15, 17 and opens them for the passage of signals from the first inputs of the triggers to their outputs. The pulse of the beginning of the window from the first output of the reference frequency generation unit 14 also goes to the third input of the dynamic counter 52 and causes a signal from the output of the key to have the information key in the buffer 12. This signal switches the key to the zero position if the value of the dynamic counter is zero , and to a single position for any other value of dynamic counter 3. Thus, it is determined whether bits of useful information will be read from buffer storage 2 or a standard sequence of bi tov from acknowledgment buffer 13 in the absence of useful data for transmission. The pulse of the start of the window from the first output of the reference frequency generation unit 14 also arrives at input 1.1 of the service information storage unit 16, as a result of which the service field “transfer rate” is read, which uniquely determines the number of bits of useful information in the user part of the packet, from the second output and the arrival of this value at the fourth input of the calculation unit and adding a checksum 4, to the second input of the second buffer drive 5, to the second input of the interleaver 6, to the third input of the encoding unit 7, to the second the input of the modulator 9, to the second input of the power amplifier 10 and to the first input of the first frequency synthesizer 24. The values of the number of user bits received by the listed devices in the current packet are stored in all these devices and allow their work with fixed parameters for a constant number r of the service part packet and with adaptable parameters for a variable amount of q bits of user information. The pulse of the beginning of the window from the first output of the reference frequency generation unit 14 also arrives at the first input of the electronic clock 18 and fixes the exact time of the start of the packet transmission. This time will be considered current for the packet transmitted in this window. The electronic clock itself is actually a memory element that stores the value of the current start time for transmitting the next window in combination with a quartz electronic clock. The value of the time from the output of the electronic clock 18 enters the input 1.4 of the service information storage unit 16 and is recorded in it. The pulse of the beginning of the window from the first output of the reference frequency generation unit 14 also enters the input of the counter 19, increasing it by one. This counter is overflowed when counting two pulses at its input, then it is reset to its initial state, it ensures the operation of the receiving part of the transceiver only in the receiving window. With the appearance of the start pulse of the window at the first output of the reference frequency generation unit 14, pulses of reading service information bits from the service information storage unit 16 begin to appear at its second output. These pulses pass through the second trigger 15 opened by the window start pulse and enter the input from its output 1.2 of the service information storage unit 16. Each pulse reads one bit of service information, which from the first output of the service information storage unit 16 is fed to the third input of the calculation and add control unit Aulnay amount 4, which processes them, performs calculations, and from its output sends them to the first input of the second buffer store 5. In the header bits stored therein prior to storage of all bits of the package. After passing r pulses from the second output of the reference frequency generation unit 14, reading out all the service information by these pulses from the service information storage unit 16 and storing them in the second buffer storage 4, the second switch 14.5 is switched in the reference frequency generation unit and the output of it starts pulses appear from his third input. These are impulses of reading useful information, which come with a frequency determined by an adaptable information transfer rate. From the third output of the reference frequency generation unit, these pulses pass through the third trigger 17, open in the transmission window, to the second input of the information availability key in the buffer 12. If there is information to transmit, the information availability key in the buffer is in state “1” and the pulses from it the second input goes to the second input of the buffer storage 2, otherwise, to the input of the acknowledgment buffer 13. These pulses read a certain (determined by the information transfer rate) number of bits of information q, which from the second output of the buffer accumulate When 2, either from the output of the acknowledgment buffer 13, they are sent to the first or second, respectively, input of the calculation and adding a checksum 4. This process continues until the checksum is calculated for all bits of the packet. After processing in the calculation unit and adding a checksum, the bits of the packet come from its output to the first input of the second buffer storage 5 and are stored there. When the last bit of a packet has passed through the calculation and adding block of the checksum 4, the bits of the worked out checksum come from its output to the first input of the second buffer storage 5. At the end of this process, from the output of the second buffer storage 5 to the first input of the interleaver 6, a signal is received about the end of the packet formation in the buffer, as a result of which from the first output of the interleaver 6 to the third input of the second buffer storage 5 the pulses of reading bits of the packet are received in a sequence different from the order their receipts, moreover, the bits of the service part are mixed together, and the bits of the useful information and the checksum are separately so that the bits of the service part of the packet are not mixed with the user bits part and checksum. The interleaved bits of information come from the second output of the interleaver 6 to the first input of the encoding unit 7, which performs noise-correcting coding of the r interleaved bits of the header with the most redundant code, q bits of useful information and w bits of the checksum by the error-correcting code in accordance with the adapted value. The encoding of the useful part of the packet is carried out by the code from the set of used, which is set either by the encoding control unit 33 (thus, the transmitted signal is adapted by the type of encoding in case of unsatisfactory reception quality), or in accordance with the signal that came from the first output of the service information allocation unit 22 (thus, the type of coding of the signal is matched with that which is installed at the far end of the radio link). Further, the bits of information come from the output of the coding block 7 to the first input of the adder modulo two 8, in which the superposition of S ₁ clock cycles of the NWP SHPS occurs on one bit of overhead information. The number S _{1 is} determined by how many times the frequency of the clock pulses from the fourth output of the reference frequency generating unit 10 to the second input of the GPS NPS 31 is greater than the pulse frequency at the second output of the reference frequency generating unit 14. Thus, an increase in the noise immunity of the transmitted signal in K _NPS ≈2 · At times [L. Varakin "Communication systems with noise-like signals." - M .: Radio and communications, 1985. - 384 p.], Where B = F · T is the signal base. The base of the phase-manipulated noise-like signal obtained by direct modulation of the carrier by a pseudorandom sequence is S ₁ times larger than the base of the corresponding digital signal without superimposing the NPS PSP, provided that an integer S ₁ , code elements of the NPS SHPS is laid on the duration of one information symbol of digital information [Borisov V. I., Zinchuk V.M., Limarev A.E., Mukhin N.P., Nakhmanson G.S. "Interference immunity of radio communication systems with the expansion of the spectrum of signals by modulation of the carrier pseudo-random sequence." - M.: Radio and Communications, 2003. - 640 p.]. Thus, the resulting increase in noise immunity is determined by the ratio K _SHPS ≈2 · S ₁ · B ₀ , where B ₀ is the base of the phase-shifted signal of digital information without superimposing SHP SHP. The pulses from the fourth output of the reference frequency generation unit 14 set the frequency of the formation of the GPSS SHPS 31 binary pseudorandom values at its output. Next, the bits of information with superimposed on them the SSB NPS arrive from the output of the adder modulo two 8 to the first input of the modulator 9, in which the phase manipulation of the bits of information of the packet at the frequency of the signal received at the fourth input of the modulator from the output of the first frequency synthesizer 24. 24 produces a frequency output to its output in accordance with the frequency number received at its second and third input from the generation unit of the PSS RFP 25. At the second input of the first frequency synthesizer 24 comes the frequency number that is necessary Qdim synthesize useful portion for transmitting packet (formed in accordance with dynamically adaptive frequency hopping) from the first CAP generation unit 25 outputs frequency hopping, and the third input of the synthesizer comes number frequency for transmitting overhead portion of the packet (in accordance with a fixed frequency hopping).

Let us consider in more detail the operation of the generation unit PSP PPRCH 25 (figure 4). The initial setting of the allowed frequencies, which arrives before the beginning of the communication session, at input 1.2 of the PSP PPRCH 25 generation block, is fed to inputs 2.1 ... 2. To the first memory element 25.1 and to inputs 1.1 ... 1. To the second memory element 25.7 and written into them bitwise. The initial setting of the allowed frequencies is a sequence of K zeros and ones, and one means that the frequency with the corresponding number is allowed, 0 is prohibited. At the moment of starting the transmission of the packet from the input 1.1 of the PSP PPRCH 25 generation block, the window start pulse arrives simultaneously at the inputs 1.1 ... 1. To the first memory element 25.1 and reads the current frequency table. In the first transmission window, the current table in the first memory element 25.1 matches the initial setup table, then it will be adjusted in accordance with the tables of allowed frequencies coming from the far end of the radio line and from the outputs of the control receivers, and the table in the second memory element 25.7 always coincides with the initial setting table of the allowed frequencies and does not change during the communication session. The pulse received at the input 1.1 of the first memory element 25.1, extracts the value contained in the first memory cell, and sends it to the first output of the first memory element 25.1. Similarly, the pulse supplied to the input 1.2 of the first memory element 25.1, extracts the value contained in the second memory cell and sends it to the second output of the first memory element 25.1, and so on, reading to the K - and memory cells occurs. The read values from the outputs 1 ... To the first memory element 25.1 simultaneously arrive at the inputs of the third adder 25.2, the output of which shows a signal equal to the sum of the read units and, thus, the number of allowed frequencies (in the first window, the number of allowed frequencies is equal to their number in the initial setting coming to the input 1.2 of the PSP PPRCH 25 generation block, then, in the process of exchanging information with the transceiver at the far end of the radio line and taking into account the noise situation at both ends of the radio line, the number of summed tr With a totalizer 25.2 allowed frequencies may vary). The signal from the output of the third adder 25.2 is fed to the second input of the GPS 25.5. The value of the sum of the number of allowed frequencies is necessary for GPS to scale the range of issued pseudo-random numbers, taking into account the tables allowed at the far and near ends of the radio frequency line and the table of frequencies allowed under EMC conditions. At the same time, the pulse of the beginning of the window is supplied from the input 1.1 of the PSP PPRCH 25 block to the inputs 2.1 ... 2. To the second memory element 25.7, which contains a table of frequencies allowed by the EMC conditions. Upon receipt of this pulse, this table is read from the outputs 2.1 ... 2. To the second memory element 25.7. The read values go to inputs 1 ... To the fourth adder 25.6, from the output of which the third input of GPS 25.5 receives the sum of the number of frequencies allowed by the EMC conditions, without taking into account the noise situation at both ends of the radio line (this amount is unambiguously determined by the initial installation and does not change in the process communication session). Simultaneously with the described reading and summing, the window start pulse is supplied from the input 1.1 of the SRP 25 PSS frequency generation block 25 to the first input of the GPS 25.5 and initiates the generation of a pseudo-random value of the frequency number at the first output, at which the useful information of the packet will be transmitted in the current window, and on the second output - the pseudo-random value of the frequency number at which the service part of the packet will be transmitted or received in the current window. The pseudo-random value of the frequency number at the first output of the GPS 25.5 is scaled taking into account the tables allowed at the near and far ends of the radio line frequencies and frequencies allowed by EMC conditions, and is adaptive. The pseudo-random value of the frequency number at the second output of GPS 25.5 is scaled taking into account only frequencies allowed by EMC conditions (this table is the same at both ends of the radio link), and is not adaptive. This ensures the reception of the service part of the packet in accordance with a fixed pseudo-random law of frequency change, which is known in advance at both ends of the radio line, and due to the fierce time synchronization, the frequency at which the packet was transmitted is always known at the receiving end. The reception of the useful part of the packet is made at a frequency that is not known in advance on the receiving side due to its adaptation in accordance with the noise situation at the far end of the radio line, the changes of which cannot be predicted, and the frequency number at which it is necessary to receive the useful part of the packet is extracted from the received at a known frequency of the service part of the packet. The value of the frequency number i1 worked out at the first output of the GPSSP 25.5 is supplied to the first input of the first block of the sample 25.3, which searches for the i1st allowed frequency in the common frequency array. To do this, the first sample block sequentially polls the memory cells of the first memory element 25.1, starting with the first. If a unit is written in the cell, the unit is added to the internal counter of the first sampling block, otherwise it is not added. Such a survey and accumulation occurs until the internal counter for i1 elements of the first block of sample 25.3 is overflowed, then the cell number on which the internal counter has accumulated i1 elements will be the frequency number j1 in the general set at which the useful part of the packet should be transmitted in the current window. The value j1 of the frequency number at which it is necessary to transmit the useful part of the packet, taking into account the noise situation at both ends of the radio line and the initial setting of the allowed frequencies according to the EMC conditions from the second output of the first sampling block 25.3, is fed to the first output of the SRP 25 frequency transmitting unit. Similarly, developed at the second GPSSP output 25.5, the value of the frequency number i2 goes to the second input of the second sampling block 25.8, which searches for the i2-th allowed frequency in the general frequency array by polling the second memory element 25.7 and outside accumulation, as described above, and finds the corresponding frequency number j2 in the general list of frequencies used. The value j2 of the frequency number, taking into account only the initial setting of the allowed frequencies according to the EMC conditions, from the second output of the second sampling block 25.8, is fed to the second output of the PSP RF frequency generation unit 25. The interference situation at both ends of the radio link is taken into account by superimposing a table of allowed frequencies coming from the outputs 1 ... To the resolver 65 to the table of allowed frequencies established by the initial installation to provide EMC. When receiving the next packet, the decider reads the table of frequencies allowed at the near end, obtained as a result of work 1 ... K of the control receivers 21.1 ... 21.K and compares it with the table of allowed frequencies from the service part of the next received packet. At the outputs 1 ... To the solver 20, a table is provided in which only those frequencies that are free from interference are allowed, both at the near and far ends of the radio link. In parallel with the table of allowed frequencies from the output 1.1 of the deciding device, a clock pulse is fed to the inputs 3.1 ... 3. To the second memory element 25.7 of the PSP PPRCH generation block 25. Through this pulse, the values of the table of allowed frequencies recorded in the second memory element 25.7 at the same time are read out and supplying them to the first inputs of the corresponding elements “and” 25.4.1 ... 25.4.K, the second inputs of which receive a table of allowed frequencies from the outputs 1 ... K of the resolver 20. As a result of such a superposition on the outputs Odes of the “and” elements, a table of allowed frequencies is obtained taking into account the noise situation at both ends of the radio line and the initial installation according to the EMC conditions. The resulting table of allowed frequencies comes from the outputs of the corresponding elements "and" 25.4.1 ... 25.4.K to the inputs 3.1 ... 3.K of the first memory element 25.1, is written to the corresponding memory cells of this element and will be used to generate the next value of the frequency number in the GPS 25.5 to be issued from its first release.

The modulator selects the frequency at which the conversion is performed: for overhead bits - in accordance with a fixed frequency hopping frequency, taking into account the EMC conditions, for user bits - in accordance with the frequency hopping frequency, adapted according to the results of evaluating the noise situation at both ends of the radio line and taking into account the EMC conditions. The type of modulation is set by the control signal that comes from the output of the control unit by the type of modulation 36, or from the sixth output of the service information extraction unit 22 (adjusting to the type of modulation on the far side of the radio line), to the third input of the modulator 9. The phase-manipulated signal from the output of the modulator goes to the first the input of the power amplifier 10, in which it is amplified. The gain value is set by the control signal, which comes from the output of the transmission power control unit 35 to the third input of the amplifier 10. From its output, the signal is fed to the input of the antenna-feeder device 11 and radiated into space. The general structure of the packet is shown in FIG.

In the next window, the packet is received from the far end of the radio link. The reference frequency generation unit 14 generates a window start pulse from its first output, which is supplied to the second inputs of the second and third triggers 15, 17 and closes them. Now the signals arriving at the first inputs of these triggers will not pass to their outputs. The pulse of the beginning of the window is also fed to the first input of the electronic clock 18 and sets the current time for this window. From the first output of the reference frequency generation unit 14, the signal is fed to the first input of the PSS frequency transmitting unit 25, which generates the frequency number at which it is necessary to receive the packet header and feeds it from its second output to the first input of the receiver 26. The window start pulse is also fed to the input of the counter 19, which is overflowing with this pulse, gives a pulse to its output and is reset to its initial state. From the output of the counter 19, the pulse is supplied to the first input of the service information allocation unit 22, to the input 1.1 of the resolving device 20, and to the first inputs of the control receivers 21.1 ... 21.K. The control receivers continuously monitor the interference situation at all K used frequencies and give the measurement results in the form of a table of allowed frequencies from their outputs to the inputs 1 ... K of the resolving device 20 upon receipt of a pulse from the counter 19 output to their first inputs. At the same time, the antenna output -feeder device 11, the received signal is supplied to the second input of the receiver 26.

Consider the operation of the receiver 26, a diagram of which is shown in Fig.6. At the beginning of the window, a signal is received at the third input of the receiver 26 from the output of the counter 1.3 19. From the third input of the receiver 26, this signal is supplied to the second input of the sixth key 26.11 and puts it in the zero state. The header bits of the received packet come from the output of the AFU 11 to the third input of the sixth key 26.11, which is in the zero state. The header bits of the received packet from the output “0” of the key 26.11 are supplied to the first input of the frequency converter 26.5, the second input of which receives a signal at the frequency to which the conversion is necessary. The number of this frequency comes from the second output of the PSP PPRCH 25 generation unit to the input of the second frequency synthesizer 26.6, which generates the necessary signal and feeds it to the second input of the first frequency converter 26.5. Next, the signal from the output of the first frequency converter 26.5 is fed to the input of the first intermediate frequency amplifier 26.4, in which it is amplified. From its output, the signal enters the first demodulator 26.3, which performs demodulation according to a previously known type of modulation of bits of the service part of the packet, and then from its output the signal enters the second input of the first block of correlation processing 26.2, in which the bits superimposed on them are removed to the transmitting side of the SSB NPS using a signal arriving at its first input from the second output of the GPS NPS 31. The packet header bits in digital form are received from the output of the first correlation processing block 26.2 to the input of the sync block onizatsii and allocating overhead 26.1. In this block, the packet is “captured” by its first header containing the sync sequence, as a result of which the block determines the times when significant bits of the header will begin and the moment of the start of the bit of useful information. The start signal following the bits of useful information comes from the third output of the synchronization unit and the allocation of service information 26.1 to the first input of the sixth key 26.11 and puts it in a single state. Also in the block synchronization and allocation of service information 26.1 is the selection of the header, informing the receiver of the frequency number at which it is necessary to receive the user part of the packet. The corresponding signal is transmitted from the second output of the synchronization unit and the allocation of service information 26.1 to the input of the third frequency synthesizer 26.12. Block synchronization and allocation of service information 26.1, using the values of the first two parts of the header (synchronization and frequency number), removes them and sends the remaining part of the header to its first output, from which the signal goes to the output of receiver 26. The sixth key 26.11 switches to a single state by the signal from the synchronization unit and the allocation of service information 26.1 at the time of the beginning of the arrival of bits of useful information, which from the fourth input of the receiver 26 go to the first input of the second frequency converter 26.10. The input signal converted to the frequency with the number allocated from the header of the received packet, through the signal supplied from the output of the third frequency synthesizer 26.12 to the second input of the second frequency converter 26.10, is fed to the input of the second intermediate frequency amplifier 26.9, from the output of which the amplified signal is input the second demodulator 26.8, which performs the demodulation of the signal in accordance with the number of the type of modulation, which was allocated from the service part of the current package and issued from the sixth output of the block I overhead information 22 via the fifth input of the receiver 26 to the second input of the second demodulator 8.26. From its output, the selected digital signal is fed to the second input of the second block of correlation processing 26.7, which removes the SPS bandwidth from the bits of useful information using the signal that arrives at its first input from the second input of the SPS blockboard 31. Coded bits of useful information from the output of the second block of correlation processing 26.7 go to the output of the receiver 26.

The bits of the packet are sent to the second input of the decoding unit 27, in which the redundancy of the error-correcting code is removed: for the service part, in accordance with a fixed type of coding, for the user part, in accordance with the code number that was received at the end of the header interpretation process from the fifth output of the allocation block service information 22 to the first input of the decoding unit 27. From the output of the decoding unit 27, the bits of the packet go to the second input of the third buffer storage 28. As soon as the header is fully I entered the third buffer storage, from its output to the input of the deinterleaver 29 receives a permission signal. The de-interleaver begins to read the header bits in the reverse order to that which was during the interleaving during the transmission, and outputs them from its output to the input of the checksum verification unit 30. Similarly, when the bits of the useful part of the packet cease to arrive and all will be accumulated in the third buffer storage 28, they are read by the de-interleaver 29, directly de-interleaved, and the checksum 30 is issued to the verification unit. If the checksum for the entire package is correct, from the second output of the control verification unit Ummah 30, a signal arrives at the first inputs of the counters 1.4 37 and 1.5 38, otherwise a signal arrives from the third output of the checksum verification unit 30 at the second inputs of the counters 1.4 37 and 1.5 38. When the signal appears at the first inputs, the counter 1.4 increases by one, and the counter 1.5 is reset, when a signal appears on the second inputs, on the contrary, counter 1.4 is reset, and counter 1.5 is incremented by one. When the counter 1.4 overflows, it is reset, and from its output to the first input of the processor 32 a signal is received to adapt the parameters to reduce the noise immunity of the transmitted information and increase the transmission speed (favorable interference conditions) and vice versa, when the counter overflows 1.5 38, it is reset, and from its output to the second input of the processor 32, a signal is received to adapt the parameters in the direction of increasing the noise immunity of the transmitted information and reducing the transmission speed (adverse interference conditions). From the first output of the checksum verification unit 30, information bits are supplied to the second input of the service information allocation unit 22.

Let us consider in more detail the operation of the overhead information allocation unit 22 (Fig. 7). At the beginning of the window, a pulse is received from the output of the overflowed counter 1.3 64 at the first input of the overhead information allocation unit 22, which then goes to the first inputs of the keys 22.1 ... 22.4 and 22.9, puts them in the state “0”, and to the first inputs of the counters 22.5 ... 22.8 and 22.10, resets them to the zero state. The bits of the incomplete header of the received packet begin to arrive at the second input of the overhead information allocation block 22, from which the synchronization bits and frequency numbers that were used and removed from the header inside the receiver 26 are excluded. The received packet header bits received at the second input of the overhead information allocation block 22 go to the second inputs of the sixth key 22.9 and the eighth counter 22.10. The sixth key 22.9 is in the "0" position and sends the bits that come to it to the 6th output of the overhead information allocation block. The eighth counter 22.10 is overflowed when counting r3 bits received at its second input (the number of bits in the header responsible for the type of modulation). When overflowing, the counter gives a pulse from its output to the third input of the sixth key 22.9, which puts the key in state “1” and all subsequent bits of information coming to the second input of the key will be sent further down the chain from the output “1” of the sixth key 22.9 to the second the input of the fifth key 22.4 and the second input of the seventh counter 22.8. As a result of the connection, the sixth key 22.9 - the eighth counter 22.10 - sent to the 6th output of the service information allocation unit r3 bits of service information, which inform the receiving part of the type of modulation by which the current packet was transmitted at the far end of the radio link. In the same way, the fifth key 22.4 - the seventh counter 22.8 r4 bits of overhead information informing the receiving part about the code number is allocated by the bunch; fourth key 22.3 - sixth counter 22.7 r5 bits of overhead information notifying the receiving part of the speed number at which the packet was transmitted; a bunch of the third key 22.2 - the fifth counter 22.6 r6 bits of service information notifying the receiving part about the time of formation of the packet; by a bunch, the second key 22.1 is the fourth counter 22.5 r7 bits of service information notifying the receiving part of the frequencies allowed for radio communications at the far end of the radio link. The eighth service part r8 bits does not carry any semantic load and serves as a protective time interval for the equipment to process the header part and prepare to receive the useful part of the packet with the given parameters. Information of the third part of the header r3 (modulation type) is supplied from the sixth output of the service information allocation unit 22 to the input 1.6 of the service information storage unit 16, as well as to the third input of the modulator 9. Information of the fourth part of the r4 header is fed from the fifth output of the service information allocation unit 22 to input 1.5 of the service information storage unit 16, to the second input of the encoding unit 7 and informs it of the need to encode in the next window for transmission with the same code as in the received packet — matching the code number, and also to the first input of the decoding unit 27. Information of the fifth part of the header r5 is fed from the fourth output of the service information allocation unit 22 to the input 1.3 of the service information storage unit 16, as well as to the first input of the reference frequency generation unit 14 and makes the switch 14.3 switch to that counter, which corresponds to the transmission rate of the currently received packet. Thus, the packet is transmitted in the next window at the same speed as at the far end of the radio link — speed matching. The information of the sixth part of the header r6 (time) is supplied from the third output of the service information allocation unit 22 to the second input of the electronic clock 18. This signal corrects the electronic clock in accordance with the contents of the service part of the received packet. Such adjustment of the electronic clock is carried out to constantly maintain the transceiver devices at both ends of the radio line in synchronism, it is carried out at the end of the receive window so that the process of accepting the current packet is not interrupted. Information of the seventh part of the header r7 (the table of allowed frequencies) is supplied from the second output of the overhead information allocation unit 22 to the input 1.2 of the resolver. Through this, the jamming situation at the far end of the radio link is recorded.

Let us consider in more detail the operation of the resolver 20 (Fig. 8). At the beginning of the window, a pulse is received from the output of counter 1.3 19 to the first inputs of the control receivers 21.1 ... 21.K. By means of this pulse, the values of the allowed frequencies in binary form, measured by the control receivers, are read. If the control receiver, which monitors the presence of interference at the i-th frequency, has decided that the frequency is free from interference, then a unit is received from its output, otherwise it will be zero. The table of allowed frequencies comes from inputs 1 ... To the resolver 20 to inputs 1.1 ... 1. To the fourth memory element 20.4, in which this table is recorded in the corresponding memory cells. From the third output of the overhead information allocation unit 22, an input table 1.2 of the resolving device 20 receives a table of frequencies allowed at the far end of the radio link. From the input 1.2 of the resolver 20, this table is sequentially fed to the inputs 2.1 ... 2. To the third memory element 20.2 and is written to the corresponding memory cells. The pulse from the output of the counter 19 is fed to the input of the delay line 20.1, in which the pulse is delayed for a time sufficient to receive the header of the current packet, highlight the table of frequencies allowed at the far end of the radio link, write the tables allowed at the far and near ends of the radio frequency channel to the third and the fourth memory elements 20.2 and 20.4. From the output of the delay line 20.1, the pulse goes to the output 1.1 of the deciding device 20, to the inputs 1.1 ... 1. To the third memory element 20.2 and to the inputs 2.1 ... 2. To the fourth memory element 20.4. With this pulse, tables of allowed frequencies are read from both memory elements, and from their outputs 1 ... K, the read values go to the first and second inputs of the elements "and" 20.3.1 ... 20.3.K. In these elements there is a logical multiplication of the values of the tables allowed at the near and far ends of the radio channel of the allowed frequencies. From the outputs of the corresponding elements “and” 20.3.1 ... 20.3.K to the outputs 1 ... To the resolving device 20, the resulting table of allowed frequencies is received, in which only those frequencies that are allowed (have a unit value in the table) are allowed, both at the near and at the far end of the radio link. This resulting table of frequencies from the outputs 1 ... To the deciding device 20 is fed to the inputs 1 ... To the block of storage of service information 16 and to the inputs 1 ... To the block of generation of the SRP PPRCH 25.

From the first output of the overhead information allocation unit, 22 bits of the user part of the packet are transmitted to the input of the recipient of digital information 23.

The conversion of the original digital signal to the emitted signal (Fig. 9) includes the following stages: (a) the initial digital signal at the output of the digital information source 1, (b) the signal at the output of the decoder, (c) the initial part of the signal at the output of the adder modulo two after the implementation of the overlay on (d) the signal of the GPSSP ShPS 31, (g) the signal at the output of the modulator 9 after phase manipulation.

Technically, the entire digital part of the transceiver can be implemented using Altera programmable logic integrated circuits, speed, code, power and modulation controllers based on AVR microcontrollers.

Claims (1)

A multi-parameter adaptive information transmission system containing a digital information source, the output of which is connected to the first input of the buffer storage device, with the first input of a dynamic counter, the output of which is connected to the first input of the information availability key in the buffer, the output "0" of which is connected to the input of the acknowledgment buffer; the first output of the buffer storage device is connected to the input of a digital information source; the output "1" of the information availability key in the buffer is connected to the second input of the buffer storage, the second output of which is connected to the second input of the dynamic counter; the coding unit, the output of which is connected to the first input of the adder modulo two, the output of which is connected to the first input of the modulator, the output of which is connected to the first input of the power amplifier, the output of which is connected to the input of the antenna-feeder device, the output of which is connected to the second inputs of the control receivers and with the fourth input of the receiver; a reference frequency generating unit, the first output of which is connected to the first input of the electronic clock, with the input of the counter 1.3, the output of which is connected to the input 1.1 of the resolver, as well as with the first inputs of the control receivers, the outputs of which are connected to the inputs 1 ... K of the resolver; the first output of the reference frequency generation unit is also connected to the second input of the third trigger, the output of which is connected to the second input of the information availability key in the buffer; the first output of the reference frequency generation unit is also connected to the second input of the second trigger, the output of which is connected to the input 1.2 of the service information storage unit; the first output of the reference frequency generation unit is also connected to the third input of the dynamic counter, with the input 1.1 of the PSP PPRCh generation unit; the second output of the reference frequency generation unit is connected to the first input of the second trigger; the third output of the block generating the reference frequencies is connected to the first input of the third trigger; the fourth output of the block generating the reference frequencies is connected to the input of the GPS SPS, the first output of which is connected to the second input of the adder modulo two; the first processor output is connected to the input of the coding control unit, the output of which is connected to the input 1.5 of the service information storage unit and the second input of the coding unit; the second output of the processor is connected to the input of the transmission rate control unit, the output of which is connected to the first input of the reference frequency generation unit and input 1.3 of the service information storage unit; the third output of the processor is connected to the input of the transmission power control unit, the output of which is connected to the third input of the power amplifier; the second output of the GPS BSS is connected to the second input of the receiver; the first output of the PSP frequency hopping generation unit is connected to the second input of the first frequency synthesizer; the second output of the PSP frequency hopping generation unit is connected to the third input of the first frequency synthesizer, the output of which is connected to the fourth input of the modulator; the second output of the PSP frequency hopping generation unit is also connected to the first input of the receiver; outputs 1 ... To the deciding device are connected respectively to the inputs 1 ... To the storage unit of service information and to the inputs 1 ... To the generation unit of the SRP PPRCH; the input 1.2 of the PSP RFP generation unit is supplied with the initial settings of the allowed frequencies (for example, by entering from the keyboard by the operator); the second output of the overhead information allocation unit is connected to the input 1.2 of the deciding device, the output 1.1 of which is connected to the input 1.3 of the generation unit of the PSS frequency converter; the third output of the service information allocation unit is connected to the second input of the electronic clock, the second output of which is connected to the input 1.4 of the service information storage unit; the fourth output of the overhead information allocation unit is connected to the first input of the reference frequency generation unit; the fifth output of the service information extraction unit is connected to the first input of the decoding unit, the input 1.5 of the service information storage unit and to the second input of the encoding unit; the output of counter 1.4 is connected to the first input of the processor; the output of the counter 1.5 is connected to the second input of the processor; characterized in that series-connected unit for calculating and adding a checksum, a second buffer store, an interleaver are added in series, the first output of the interleaver being connected to the third input of the second buffer store; the output of the acknowledgment buffer is connected to the second input of the calculation and add checksum unit; the second output of the buffer storage is connected to the first input of the calculation and adding a checksum; the first output of the service information storage unit is connected to the third input of the calculation and add checksum unit; the second output of the service information storage unit is connected to the fourth input of the calculation and add checksum unit, with the second inputs of the second buffer storage, interleaver, modulator, power amplifier, with the third input of the encoding unit and with the first input of the first frequency synthesizer; the second output of the interleaver is connected to the first input of the coding unit; a control unit for the type of modulation, the input of which is connected to the fourth output of the processor, and the output to the input 1.6 of the service information storage unit and the third input of the modulator; a third buffer drive, a de-interleaver, a checksum verification unit connected in series, the first output of the checksum verification unit being connected to a second input of an overhead information extraction unit, the first output of which is connected to an input of a digital information receiver; the output of the receiver is connected to the second input of the decoding unit, the output of which is connected to the second input of the third buffer storage; the second output of the deinterleaver is connected to the first input of the third buffer storage; the second output of the checksum verification unit is connected to the first inputs of the counters 1.4, 1.5; the third output of the checksum verification unit is connected to the second inputs of the counters 1.4, 1.5; in addition, the first output of the reference frequency generation unit is connected to the input 1.1 of the service information storage unit; the first output of the PSP RFP generation unit is connected to the input 1.7 of the service information storage unit; the first output of the electronic clock is connected to the second input of the reference frequency generation unit; the output of the counter 1.3 is connected to the first input of the service information allocation unit and the third input of the receiver; the sixth output of the service information allocation unit is connected to the fifth input of the receiver, with the input 1.6 of the service information storage unit and with the third input of the modulator.

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