SU362437A1 - DEVICE FORMATION OF THE ENSEMBLE OF FREQUENCY-TIME SIGNALS - Google Patents

Description

one

The invention relates to information encoding devices and can be used in communication systems.

A device for generating an ensemble of time-frequency signals is known, comprising n high-frequency oscillators and a clock pulse generator.

However, the known device has insufficient speed.

In order to improve speed and reliability in the proposed device, a clock pulse generator is connected to a high frequency generator through a serially connected key, modulator +1 and a decoder, the zero output of which is connected to the control input of the clock generator and the number-number generator of the signal whose output connected to the second input key.

The drawing shows a block diagram of a proposed device for generating an ensemble of frequency-time signals.

The device contains n high-frequency generators 1, 2 clock pulse generators, shaper 3 signal numbers, key 4, adder 5 modulo n + 1 and decoder 6. The clock generator 2 is connected to high-frequency oscillators / through serially connected key 4, adder 5 modulo n + 1 and a decoder 6, the zero output of which is connected to the control input of the generator 2 clock pulses and the shaper 3 of the number-number of the signal whose output is connected to the second input of the key 4.

An ensemble of time-frequency signals is formed in the device in accordance with the Latin square of order n, the lines of which are built according to the rule pk, i - Kimod (/ z + l), where K. is the signal number (line number), L 1, 2 , ... n, i is the number of the time interval (column number), r 1, 2,. . . n, (/ r + 1) is a prime number. The device is based on the following properties of the Latin square: p, „, - +) A, (rt + 1), pj, mod (n -) - l). The first property is used to implement the necessary time delays and frequency shifts to transmit a message, identifying it with the / C-th signal. The transfer of the number of / C to the modulo adder (g + 1) is carried out by clock pulses, which follow with the frequency p / H from the generator of 2 clock pulses, where T is the time of transmission of one signal. The end of the formation of a single time-frequency signal is determined by the zero sum in the adder.

In accordance with the message shaper 3 forms the number-number of the corresponding signal for the entire time of its transmission. Key 4 at intervals of 7 // g gives this number to the input of the adder 5 modulo «+ 1. In accordance with the accumulated sum at each clock cycle, the decoder 6 turns on the corresponding high-frequency generator /. The end of the time-frequency signal transmission corresponds to the arrival of a key 4 (/ g + 1) -th clock pulse to the control input, and in the adder 5 modulo n + 1 the accumulated sum becomes zero, and at the zero output of the decipheror 6 the signal that a new number is generated in the imaging unit 3 in accordance with the new message, supplied by an additional pulse generated by the generator 2 clock pulses regardless of clock pulses, via key 4 to the input of the adder 5. Time delay of the additional pulse and in connection with this decrease in the duration of the first

The radio frequency pulse) frequency-time signal can be set sufficiently small.

Subject invention

A device for generating a time-frequency signal ensemble, comprising n high-frequency oscillators and a clock pulse generator, characterized in that

speed and reliability improvements, the clock pulse generator is connected to the high frequency oscillator via a serially connected key, modulo p + adder, and a digitizer whose zero output is connected to the control input of the clock generator and the number-number generator of the signal whose output is connected to the second key input .

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