SU981998A1 - Pseudo-random pulse generator - Google Patents

Description

(54) GENERATOR OF PSEUDICAL EMERGENCY PULSES

I .. .

The invention relates to computing technology for static modeling of control, communication and control systems.

A multichannel random nixjueccoB generator is known, containing h independently operating pulse generators, logical and storage elements, which allow n random pulse streams to be formed with adjustable frequencies 1J.

The disadvantage of this device is the difficulty in adjusting the frequency of the pulsed streams, due to the fact that the frequency of the signal H9 of each output depends on the frequencies of all the pulse generators.

The closest technical solution to the invention is a pseudo-random pulse generator comprising a clock generator, a logic feedback register and a logic circuit. The statistical t characteristics of the flow of pulses at the output of this device are determined by the structure of the logic circuit, and the frequency of the output signal is proportional to the frequency of the signal of the clock generator 2J.

However, if necessary (in order to form a large number of random impulses of flows with different intensities, this generator solution is associated with significant hardware costs for building a large number of random number generators based on shift registers.

The purpose of the invention is to expand the functionality of the generator by increasing the number of its outputs,

The goal is achieved by the fact that in the pseudo-random generator of pulses, containing the first group of elements AND, whose inputs are connected to the corresponding outputs of the M-sequence generator, a second group is introduced

The 20 AND elements and the OR element, output i of the second, are connected to the generator input of the M-sequence, and the inputs of the OR element are the generator inputs and combined with the first inputs of the corresponding AND elements of the second group, the KOTOpfcix outputs form the generator outputs group, and the second inputs of the second And elements Groups are connected to the outputs of the corresponding elements AND of the first group. The drawing shows a block diagram of a pseudo-random pulse generator. The generator contains the element 1 OR, the generator 2 M-sequences, the elements 3 AND and the elements 4 I. The generator works in a sequential way. The signals n of pulse generators with frequencies fi (i 1,2, ..., n) through the logic element 1 OR are fed to the clock input of the generator of the M-sequence. At the moment of arrival of each pulse, the latter changes. its state, i.e. at its bit outputs a new case is formed | At the same time, each bit of it with probability 1/2 takes the value of a logical unit. Each i-th element 3 And converts signals from several K outputs of an M-sequence generator and generates a random signal with given probabilities of states 1 and O. At the state X 1, at the moment of arrival of a pulse of the corresponding i -th pulse generator output of the i-th element And 4 a pulse of the output signal appears. The average pulse frequency of the signal is determined by the probability of the state Xi 1-P; ((1) to the signal frequency f of the i-ro pulse generator i fiPi (l), i.e., the signal intensity at each i-th generator output is proportional to frequency signal f. of the corresponding pulse generator. For example, the probabilities P. are equal to (0.5) i, and the frequencies of the output signals are defined as fi (0.5). Thus, the generator allows to form several independent random pulses of fluxes on the basis of one shift register with logical feedback. the simplification of the multi-channel random pulse generator scheme invents a pseudo-random pseudo-random pulse containing the first group of elements, whose inputs are connected to the corresponding outputs of the generator M-sequence, characterized in that in order to expand the functionality of the generator by increasing the number of its outputs It contains the second group of AND elements and the OR element, whose output is connected to the generator input of the M-series, and the inputs of the OR element are the generator inputs and combined with the first inputs of the corresponding elements and the brewing group, the outputs of which form a group of outputs of the generator, and the second inputs of the elements of the second group are connected to the outputs of the corresponding elements of the first group. Sources of information taken into account in the examination 1. The author's certificate of the USSR 373718, cl. G About F 7/56 ,. 1971. 2. Shl Pobersky VI, Fundamentals of technology for the transmission of discrete messages. M., Holy Hour, 1973, p. 167 (prototype).

Claims (1)

_s Claims Pseudo-random pulse generator ,. containing the first group of AND elements, the inputs of which are connected to the corresponding outputs of the M-sequence generator, characterized in that, in order to expand the functionality of the generator by increasing the number of its outputs, it contains a second group of AND elements and an OR element, the output of which is connected to the input generator of M-verdonism, and the inputs of the OR element are the inputs of the generator and combined with the first inputs of the corresponding elements AND of the second group, the outputs of which form a group of outputs those. the signal intensity at each i-th output of the generator is proportional to the generator, and the second inputs of the element of the second group are connected to the output elements of the corresponding group.