SU1748261A1 - Radio communication system with frequency adaptation - Google Patents

Abstract

The invention relates to radio engineering and can be used in automated 2 radio communication systems. The aim of the invention is to improve electromagnetic compatibility by reducing the number of frequencies used for sounding. The goal is achieved by introducing on the receiving side of the serially connected trigger 15, a controlled clock generator 16, a counter 17 and a multiplexer 13, M frequency analyzer blocks 19, M buffer registers 18 and a clock generator 20. Sounding is performed at redundant frequencies free from interference. 1 il.

Description

The invention relates to radio engineering and can be used in automated radio communication systems.

The aim of the invention is to improve electromagnetic compatibility by reducing the number of frequencies used for sounding.

The drawing shows the block diagram of the device.

The device contains on the transmitter side the first receiver 1 of feedback signals, block 2 of frequency tuning, transmitter 3, modulator 4, second receiver 5 of feedback signals, and on the receiving side receiver 6, demodulator 7, block 8 of selection of the frequency transmission channel , frequency tuning unit 9, first shaper 10 feedback signals, second shaper 11 feedback signals, feedback channel 12, multiplexer 13, quality control unit 14, trigger 15, controlled clock generator 16, counter 17, M buffer registroy18.K (, 2M)

M blocks of frequency analysis 19.K, 2, .... M), clock generator 20.

The device works as follows.

All reserve frequencies of the radio link are divided into M subgroups (M 2). Each subgroup has its own frequency analysis unit 19.K, which continuously determines the frequency number with the minimum level of interference among the frequencies of its subgroup. The clock generator 20 periodically generates a control signal, which is used to update the current information about the frequency numbers with a minimum level of interference at the outputs of the blocks 19.K and write it to the corresponding buffer registers 18.К.

The radio system at the frequency fi transmits information, the quality control of the operation is performed by block 14. When the transmission quality decreases below the permissible limit, the quality control block 14

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The device generates a signal that triggers trigger 15, the output of which starts the controlled clock generator 16 and allows data to pass through the multiplexer 13. When reading the clock pulses of the controlled clock generator, the address, co-1, 2,. , M signal inputs of the multiplexer. Under the action of the address signals of the counter 17, all M signal inputs of the multiplexer are alternately connected to the output bus of the multiplexer. As a result of this operation, the output of block 13 forms a signal containing information on the frequency numbers of all subgroups with a minimum level of interference.

After forming the address M-ro of the multiplexer input, the counter 17 generates a reset signal, which zeroes the counter and throws the trigger into the initial state. The trigger output breaks the generation of the controlled clock generator 16.

The multiplexer 13 signal is fed to the second driver 11 and block 8. According to this signal, driver 11 generates a signal containing information about the numbers of the best subgroup frequencies, which is transmitted through feedback channel 12 to the transmitting part of the radio system, where it is received by feedback receivers 1 and 5.

The receiver 5, having given a signal to the transmitter 3, transfers it to the mode of radiation of the probing signals. The transmitter 3 tunes its frequency under the action of the control signal of unit 2 so that the probe signals are emitted only at the M best frequencies of the subgroups. Information about the best frequency numbers is fed to frequency tuning unit 2 from receiver 1 of the feedback signals.

The frequency channel selection block 8, having received the signal from the second driver 11, opens and, through the frequency tuning unit 9, frequency adjusts the receiver 6 for receiving the probe signals, Block 8 selects the best frequency, the number of which is transmitted through the first driver 10 communication on the reverse channel 12 in the form of a signal. This signal is received by receiver 1 and fed to block 2, which tunes transmitter 3 to the selected frequency. Simultaneously, the block 8 through the block 9 frequency tuning adjusts the receiver 6 to the same selected frequency. The radio system continues to operate at this frequency for the entire duration of its availability. Then the process of restructuring surrogates.

Claims (1)

Claims of the Invention Radio System with Adaptation a frequency comprising a serially connected modulator and a transmitter on the transmission side, a first feedback signal receiver and a frequency tuning unit connected in series, 0 whose output is connected to the control input Frequency tuning of the transmitter, as well as the second receiver of feedback signals, the output of which is connected to the control input Sensing mode The 5 transmitter, the signal inputs of the first and second feedback signal receivers are combined and serve as the input for the feedback signal, the modulator input is the system information input, and the receiver and demodulator on the receiving side, the output of which is information output system, consistently connected to the block selection 5 of the frequency transmission channel and the frequency tuning unit, the output of which is connected to the control input; frequency tuning of the receiver, the first and second feedback signal conditioners, the unit 0 quality control of the channel, the input of which is connected to the output of the demodulator, and the first output is connected to the control input. Changing the mode of the receiver, the output of which is connected to the signal input of the frequency selection channel, the output of which is connected to the input of the first feedback signal generator, the outputs of the first and second feedback signal conditioners are combined and activated by the output of the feedback signal, characterized in that, in order to improve the electromagnetic compatibility by reducing the number of hours by used to probe, introduced at 5 receiving side serially connected trigger, controlled clock generator, counter and multiplexer, M blocks of frequency analysis, M buffer registers and clock generator, the output of which is 0 key to the clock inputs of buffer registers and frequency analysis blocks, the outputs of each of the frequency analysis blocks are connected to the inputs of the corresponding buffer registers, the outputs of which are connected to 5 corresponding to the signal inputs of the multiplexer, while the output of the multiplexer is connected to the input of the second feedback signal shaper and to the control input of the launch of the frequency transfer channel selection block, the second output The channel quality control unit is connected to a single trigger input, the output of which is connected to the multiplexer resolution input, and the Reset input is combined with the counter input of the same name and connected to the counter control output. J J