Multi-channel communication system

 

(57) Abstract:

The invention relates to electro - and radio and can be used in wired, radio, microwave and satellite communication lines. Technical result achieved - increase system throughput without additional energy costs. The communication system includes a transmitting-side time manipulator, To the inputs of which are the basic information input system, the synchronizer, the amplitude modulator, the phase difference manipulator, codebreaker, n inputs which are additional inputs to the system, the generator carrier frequency, synchroblog, the transmitter and at the receiver side receiver, the coherent filter, peak detector, comparator, four storage devices, the decoder, the outputs of which are the main outputs of the system, the device of the sample and hold signal, synchroblog, shaper pulses, a binary counter, a phase meter, a unit for computing the phase difference solver, the outputs of which are additional outputs of the system, circuit And local oscillator. 1 Il.

The invention relates to electro - and radio and can be used in wired, for the and the transmitting side encodes the block, consisting of driver signals the address transfer and shaper group signal, the transmitter and synchroblog, and at the receiving side of the receiver, the block signal processing, solver, decoder, synchroblog and the driver signals of the addresses of the reception /1/. The former group signal are combined here To multiplier products and the adder in the block of signal processing - 2tochannels, and in the final device - adders and crucial blocks. Synchroblog on transmitting and receiving sides ensure the operability of the system.

However, this system is complex and expensive and has low reliability.

Closest to the claimed is a multi-channel system /2/.

It contains on the transmission side encodes the block consisting of the synchronizer and time manipulator, transmitter, synchroblog, and at the receiving side, the receiver agreed to a filter, a comparator, first and second storage devices, the decoder, the device of the sample and hold signal, synchroblog, shaper pulses, a binary counter, a line of communication.

However, this system has a low bandwidth.

The invention is directed to uvelicheniya side of the encoding unit, consisting of a synchronizer and time manipulator, To the inputs of which are the basic information input system, and (K+1)-th and (K+2)-th inputs connected respectively with the first and second outputs of the synchronizer, the transmitter and synchroblog connected input with the first output of the synchronizer, and the output is with synchronator transmitter and at the receiver side is connected in series receiver and coherent filter, connected in series comparator, the first and second memory devices and decoder, the device of the sample and hold signal, a signal input which is combined with the first input of the comparator, clock input connected to its output, and the output is connected to its second input, connected in series synchroblog, an input connected to the second output of the receiver, a pulse shaper and a binary counter, and the output synchroblog connected to the clock inputs of the second storage device, the binary counter and to a third input of the sample and hold signal, the output of the pulse shaper is connected to the third input of the comparator, and outputs binary counter connected to the second information input of the first storage device on the transmission side that call for the input of the transmitter, connected in series codebreaker, n inputs which are additional information input system, and a phase difference manipulator, the output of which is connected to the second input of the amplitude of the manipulator, the generator carrier frequency and the second input synchroblog, and the output of the generator carrier frequency is connected to the second input of synchroblog and (n+1)-th input phase difference of the manipulator, (n+2)-th and (n+3)-th input of which is connected respectively to the output of the temporal manipulator and the first output of the synchronizer, and at the receiving side put four additional output driver pulses, amplitude detector, the inlet of which is connected to the output of the matched filter and the output signal to the input of the comparator, connected in series meter phase, the inlet of which is connected to the output of the matched filter, the third memory, the fourth memory device, the unit for computing the phase difference and solver, the outputs of which are more system outputs, and the second inputs of the phase meter, the third and fourth memory devices are combined and connected to the output of the comparator, and the output of the third storage device, the customized storage device, and the local oscillator, the output of which is connected to the third input of the phase meter, and the second, third, fourth and fifth outputs of the pulse shaper connected respectively with the third input of the fourth memory device, a clock input of a casting device, the input circuit And a second input circuit And the fourth input of the phase meter.

The drawing shows a functional diagram of the proposed multi-channel communication system.

Multi-channel communication system includes a transmitting side encodes the block 1, consisting of a synchronizer 2 and temporal manipulator 3, the inputs of which are the basic information input system, (K+1)-th and (K+2)-th inputs connected respectively with the first and second outputs of the synchronizer 2, connected in series amplitude manipulator (AM) 4, the inlet of which is connected to the output of the temporal manipulator 3 and the transmitter 5, connected in series codebreaker 6, n inputs which are additional information input system, and a phase difference manipulator 7, the output of which is connected to a second input of the amplitude of the pointing device 4, the generator 8 of the carrier frequency, the output of which is connected to the (n+1)-th input pasaran is 3 and the first output of the synchronizer 2, synchroblog 9, the first and second inputs which are connected respectively with the first output clock and the output of the generator 8 of the carrier frequency, and the output - synchronator transmitter 5, and at the receiving side is connected in series receiver 10, a coherent filter (SF) 11, the amplitude detector (AD) 12, a comparator 13, the first storage device (memory) 14, a second memory 15 and the decoder 16, the device 17 of the sample and hold signal (water economy Department), signal input which is combined with the first comparator input, a clock input connected to its output, and the output is connected to its second input, connected in series synchroblog 18, an input connected to the second output of the receiver 10, the imaging unit 19 pulse (PHI) and the binary counter (DC) 20, and the output synchroblog 18 is connected to the clock inputs of the second memory 15, DC 20 and the third input of the water economy Department 17, exit FI 19 is connected to the third input of the comparator 13, and outputs the DC 20 is connected to the second information input of the first memory 14, connected in series meter 21 phase (if), the first input connected to the output SF 11, the third memory 22, the fourth memory 23, block 24 calculate the phase difference (BWRF) and solver (RU) 25, n outputs which are additional information outputs systemfactory connected to the third input of the memory 22, local oscillator 27 reference frequency, the output of which is connected to the third input of the phase meter 21, and the second, third, fourth and fifth outputs PHI 19 are connected respectively to the third input of the fourth memory 23, a clock input PN 25, the first input circuit And 26, a second input circuit 26 And the fourth input d'if 21. The transmission and reception side system connected through a communication line 28.

Multi-channel communication system operates as follows. On the transmission side For (K=1,2,3...) synchronous channel signal consisting of symbols "1" and "0" duration T, and represents a K-digit number in parallel binary form, arrive on time pointing device 3, so that its output at times= ST/2K(where S is the value of the input binary number in decimal form) relative to the leading edge of the pulse, the current at the second output of the synchronizer 2 and coincides with the beginning of the channel symbols is formed by a rectangular pulse of duration T/2toequal to the repetition period of short pulses from the first output of the synchronizer 2. Thus, each combination of input channel symbols corresponds to one of the 2totemporary provisions of the signal block 3 online the particular initial phase, coming from the generator 8 of the carrier frequency via a phase difference manipulator 7. Received multicast signal together with the synchronization signals that represent short radio pulses at the carrier frequency received from synchroblog 9 and bearing information about the beginning of the channel symbols transmitted by the transmitter 5 via line 28. At the receiving side group signal along with interference from the output of the receiver 10, optimally processed in SF 11, detected by the amplitude in the block 12 and is supplied to the signal inputs of the comparator 13 and the water economy Department 17. The inputs PHI 19, the water economy Department 17, DS 20 and the memory 15 is supplied with short pulses with a period T equal to the duration information symbols generated in synchroblog 18 to the output clock of the receiver 10 and coincides with the moments of the end of their admission. When first receiving a sync pulse on its trailing edge is intended to reset the water economy Department 17, DS 20, and a memory 15, and the first output PHI 19 is formed 2toshort pulses with a period T/2tocorresponding time possible positions of the maxima of the amplitude of the filtered signal. At the time the first of them (leading edge) of the signal output from HELL 12 enters comparacao zero). If it is more recent, then the output of comparator 13 is formed by a voltage drop, which opens the entrance of the water economy Department of 17 and allows him to memorize the output level of HELL 12. This procedure is repeated 2totime. As a result, by the time of arrival of the second pulse output unit 18 and the water economy Department 17 is recorded the highest level of the output signals HELL 12 within a time equal to T. the Binary K-bit counter BC 20 is designed for counting the number of pulses entering from the first output unit PHI 19. Whenever the output of comparator 13 appears a voltage drop readings To discharge the DC 20 is read into the memory 14. This allows you to fix the number of temporary positions most of the output signals HELL 12 on the time interval T. In the time of arrival of the second pulse from the output of synchroblog 18 number recorded in the memory 14, is recorded in the memory 15. The decoder can uniquely converts a binary number into channel symbols, which in the absence of interference coincide with the transmitted information symbols To the main channels.

This is the way to send and receive information main sealing channels.

The transfer of characters n (acii adjacent time group of radio signal. These characters are received in parallel form through codebreaker 6 on the phase difference manipulator 7 and set the starting phase of the oscillations coming from the generator 8 of the carrier frequency, with one of the shiftsm= m(2/2m), where m is the value of the input binary number in decimal form, relative to the initial phase of the radar pulse, installed earlier. Demodulation thus obtained signal is a digital way /3/ by blocks 21, 23-25. Storage device memory 22 is used to store intermediate data. Measuring the phase 21 each time when receiving on its second input of the differential voltage from the output of the comparator 13 transmits on its output portion of the reference pulses at its third input from the fifth output of the PHI block 19, is proportional to the phase difference of the output signal SF 11 and locals do not adjust generator 27 of the carrier reference frequency, and the memory 22 is reset and the counting of these pulses. The same difference also clears the memory 23. As a result, after time it(i=2, 3...) in the memory 22 in the absence of noise is recorded the number proportional to the phase difference of two adjacent impulses of the i-th and i+1. At the moment it+0,5 (per the initial permits the flow at its output a reference pulse, that override the number recorded in the memory 22, the memory 23 and BURP 24. As a result, at the time it+2 steps short pulse at the second output PHI 19 overwrites the number of the memory 23 in BWRF 24. The pulse outputs of 2, 3, 4 PHI 19, and the voltage drop at the output of the comparator 13 play the role of pulses overwrite, read, start measuring and installation /3/.

Thus, the proposed multi-channel communication system allows to increase the throughput without additional energy costs.

All blocks included in the system are known. The principle of operation and various schemes of phase difference manipulators are given, for example, in the book by A. M. Star and other "phase difference manipulation", M: Communications, 1967, S. 146-154.

Sources of information

1. USSR author's certificate 907834, CL H 04 J 11/00, 1982.

2. RF patent 2103827, CL H 04 J 11/00, H 04 Q 11/00, 1996.

3. L. J. Lipkin, A. A. Shishkov "Digital demodulator relative phase manipulation". Telecommunications, 2, 1973, S. 47.

Multi-channel communication system performing transmission of synchronous channel symbols representing a K-digit number containing on the transmission side of the synchronizer and the inputs are connected respectively with the first and second outputs of the synchronizer, the transmitter and synchroblog connected input with the first output of the synchronizer, and the output is with synchronator transmitter and at the receiver side is connected in series receiver and coherent filter connected in series to the comparator and the first storage device, the second storage device, and a decoder that converts a binary number written in the first storage device and written into the second storage device, channel characters, the device of the sample and hold signal, a signal input which is combined with the first comparator input, a clock input connected to the output of the comparator, and the output is connected to a second input of the comparator, connected in series synchroblog, an input connected to the second output of the receiver, a pulse shaper and a binary counter, and the output synchroblog connected to the clock inputs of the second storage device, the binary counter and to a third input of the sample and hold signal, the output of the pulse shaper is connected to the third input of the comparator, and outputs binary counter connected to the second information input of the first storage device, characterized in that on the transmission side in her VM input of the transmitter, codebreaker, n inputs which are additional information input system, and transfer n additional characters via codebreaker in parallel binary form on the phase difference manipulator, the output of which is connected to the second input of the amplitude of the manipulator, the generator carrier frequency and the second input synchroblog, and the output of the generator carrier frequency is connected to the second input of synchroblog and (n+1)-th input phase difference of the manipulator, (n+2)-th and (n+3)-th input of which is connected respectively to the output of the temporal manipulator and the first output of the synchronizer, and at the receiving side put four additional output driver pulses, amplitude detector, whose input is connected to the output of the matched filter and the output to the first input of the comparator, connected in series meter phase, the inlet of which is connected to the output of the matched filter, the third memory, the fourth memory device, the unit for computing the phase difference and solver, and the second inputs of the phase meter, the third and fourth storage devices combined and connected to the output of the comparator, and the output of the third zapominaete the entrance to the third storage device, and the local oscillator, the output of which is connected to the third input of the phase meter, and the second, third, fourth and fifth outputs of the pulse shaper connected respectively with the third input of the fourth memory device, a clock input of a casting device, the input circuit And a second input circuit And the fourth input of the phase meter, the demodulation n additional symbols is carried out digitally by measuring the phase of the fourth storage device, the unit for computing the phase difference and a casting device, the n outputs of which are optional information the system outputs.

 

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