RU2015120053A - METHOD FOR DECAMETER RADIO COMMUNICATION WITH HIGH-SPEED DATA TRANSFER - Google Patents

Abstract

A decameter radio communication method with high-speed data transmission, in which the transmitted information data stream from the message source is encoded on the transmitting side, after which a binary sequence with a speed of V = 1 / T, determined by the duration of the binary symbol T, is fed to the input of a series-parallel converter using whose input sequence is distributed on kN of its outputs in such a way that the binary elements formed by these outputs of the corresponding kN channel sequences blow simultaneously and synchronously with the channel speed V = 1 / T, and the duration T = kNT of the binary element of each channel sequence selects a much larger average delay time of the rays on the radio path by selecting the required number of N parallel orthogonal channel signals at different channel frequencies as part of the transmitted group signal and multiplex multiplexing k of each channel signal, in the block of N channel manipulators, consisting of N of the same type of channel manipulators with serial numbers from 1 to N, for each manipulator with serial number i, at the initial instant of time of each clock interval of duration T, k symbols of the corresponding k channel sequences are fed in parallel and synchronously to form the corresponding element of the transmitted channel signal of duration T at the channel frequency f with the same serial number i, after which the channel signals formed by the channel manipulators are summed at the output of the block of N channel manipulators and N is the channel group signal with a frequency interval between th

Claims (1)

A decameter radio communication method with high-speed data transmission, in which the transmitted information data stream from the message source is encoded on the transmitting side, after which the binary sequence with a speed V _u = 1 / T _u determined by the duration of the binary symbol T _u is fed to the input of a serial-parallel converter by means of which the input sequence is distributed on kN of its outputs in such a way that the binary elements formed on these outputs of the corresponding kN channel sequences minutes followed parallel and in synchronism with the channel speed V _ch = 1 / T _ch, the duration T _ch = kNT _u binary element of each channel sequence is selected much greater than the magnitude of the average lag time rays on the radio path by selecting the required number N of parallel orthogonal channel signals at different channel frequencies in the transmitted group signal and multiplexing factor k of each channel signal, in the block of N channel manipulators, consisting of N of the same channel manipulators serial numbers from 1 to N, each arm with a sequence number i, at the initial time of each clock period of duration T _CAD supplied in parallel and synchronously k symbols corresponding k channel sequences to generate a corresponding element of the transmitted channel signal duration T _kan on channel frequency f _i with the same serial number i, after which the channel signals generated by the channel manipulators are summed at the output of the block of N channel manipulators and N - channel groups second signal with a frequency interval between adjacent channel frequencies of Δf = 1 / T _ch emit broadcast via a radio transmission apparatus and the transmission antenna emitting an electromagnetic field with a horizontal polarization, and on the reception side is carried out taking two samples reflected from the ionosphere radio signals via two antennas, receiving electromagnetic waves polarized in mutually perpendicular directions, and two radio receivers, while demodulating each of the N channel signals transmitted to the channel th frequency f _i with sequence number i in the composition of the baseband signal is performed using an appropriate channel demodulator with same sequence i block number N channel demodulators consisting of N single-type channel demodulators with serial numbers from 1 to N, the demodulation of N channel signals in the form of kN channel binary sequences, formed on respective unit outputs N-channel demodulators channel speed V _ch = 1 / T _ch is supplied to respective inputs of a parallel-serial etc. a generator whose output binary sequence is decoded at a speed of V _u = 1 / T _u , after which the binary stream is transmitted to the message recipient, characterized in that on the transmitting side, the speed of the information data stream from the message source is doubled, and the binary sequence received after encoding the input serial-to-parallel converter with data rate V _u = 2 / T _u, to further distribute additional kN its outputs so that formed n additional outputs binary elements of respective additional kN channel sequence followed in parallel and in synchronism with the binary elements of the channel sequence generated in kN it outputs a channel speed V _ch = 1 / T _ch, the additional block N channel manipulators, consisting of N single-type channel manipulators with sequence numbered from 1 to N, each arm with a sequence number i, at the initial time of each clock period of duration T _CAD supplied in parallel and synchronous k on k symbols corresponding additional channel sequences to generate a corresponding element of the transmitted channel signal on a channel frequency

with the same serial number i, after which the channel signals generated by the channel manipulators are summed up at the output of the additional block of N channel manipulators and the additional group N - channel group signal is broadcast using an additional radio transmitting device and an additional transmitting antenna emitting an electromagnetic field with vertical polarization, and on the receiving side, the output voltages of the radio receivers are fed to the corresponding inputs of each of the 2N coherent blocks I (BCS), wherein each BCS with serial number i from the first group of N BCS with serial numbers from 1 to N provides the optimum coherent summation of voltages of the two samples of channel signal transmitted on the channel frequency f _i with sequence number i in the composition of the baseband signal and then the output voltage of this BCS is fed to the input of the corresponding channel demodulator with serial number i of the block N of channel demodulators, and each BCS with serial number i from the second group of N BCS with serial numbers from 1 to N performs optimal coherent summation of the voltages of two samples of the channel signal transmitted at the channel frequency

with serial number i as part of an additional group signal, after which the output voltage of this BCS is fed to the input of the corresponding channel demodulator with serial number i of an additional block of N channel demodulators, consisting of N identical channel demodulators with serial numbers from 1 to N, each of which serial number i demodulates the channel signal transmitted at the channel frequency

with sequence number i in additional baseband, results demodulation N channel signals in a second group signal in the form kN channel binary sequences generated for respective outputs additional block N channel demodulators channel speed V _ch = 1 / T _ch is supplied to the corresponding additional inputs parallel-serial converter, in each BCS, the voltage of the input signal from the output of the corresponding radio receiver is fed to the input of the corresponding node and phasing, in each of which the voltage of the input signal is filtered by a channel filter, normalized by the level of a normalizing amplifier and fed to the first input of the second multiplier and the first input of the first multiplier, the output voltage of which is filtered by a measuring filter and applied to the second input of the second multiplier, the output voltage of the second multiplier each phasing node is fed to the corresponding input of the adder, the output voltage of which is filtered by the filter of the resulting oscillation and fed to the output of the BCS, and Erez normalizing amplifier resulting oscillation is fed to the second input of the first multiplier of each node phasing.