SU1124295A1 - Random process generator - Google Patents

Abstract

A GENERATOR OF A RANDOM PROCESS, containing the first sensor of a Poisson pulse stream, a delay element, the output of which is connected to the installation input of the counter, the outputs of the bits of which are connected to the inputs of the corresponding bits of the gated decoder, the gating input of which is connected to the input of the delay element, the outputs of the gated decoder are connected to the first the inputs of the corresponding elements And the first group, the second inputs of which are connected to the single outputs of the corresponding bits of the register of the code, and the outputs of the AND elements of the first group are connected to the corresponding inputs of the first OR element, characterized in that. in order to expand the functionality of the generator by imparting a two-state Markov process to the process being formed and to simplify the generator, it contains a second Poisson pulse flow sensor, a second group of AND elements, a second OR element, a trigger, and an intensity alignment unit of two random streams , the first and second inputs of which are connected to the codes of the first and second sensors of Poisson pulse flows, respectively, a and the first and second outputs of the leveling unit int The intensities of two random streams of pulses are connected to the input, (L of the delay element and the counting input of the counter, respectively, nepBije the inputs of the elements of the second group are connected to the corresponding outputs of the gated decoder, the second inputs of the elements of the second group are connected to zero outputs of the corresponding T ( code, and the output of the elements of the second group are connected to the corresponding inputs of the second element OR, the outputs of the first and second elements OR are connected respectively to the single and zero inputs a trigger unit whose output is the output of the generator.

Description

The invention relates to computing and can be used to form the simplest Markov process with two discrete states.

A random Markov pulse sequence generator containing the first and second radioactive elements, functionally associated with the first and second absorbing screens, is known, the outputs of which through the corresponding detectors are connected respectively to the two inputs of the forming cascade executed on the trigger. This generator allows the formation of a Markov process with two discrete states (0,1), characterized by the exponential distribution of the durations of pulses and pauses, 1.

The disadvantage of the known generator is its complexity due to the use of two radioactive elements, the large volume of electronic equipment and the low accuracy of control of the parameters of the random process.

A probabilistic valve is known in which a discrete random process with two states (0.1) is formed, containing the first and second sensors of random streams of pulses, the outputs of which are connected respectively to the single and zero trigger inputs, the output of which is connected to the control input element and 2.

However, in such a device, the accuracy of parameter control is low due to manual adjustment. possible intensity drift

sensors of random streams of pulses I

The closest in technical essence and the achieved result is a random pulse flow generator, containing a Poisson pulse flow sensor, the output of which is connected to the counter input of the counter through the delay line, directly connected to the control input of the gated decoder and through the delay element with the installation About the input of the counter connected to the decoder, the outputs of which through the elements AND groups are connected to the inputs of the element OR, respectively, the output of which is the output of the generator torus, and the control inputs of the AND unit group are connected to outputs of corresponding bits upFavl spreading code register. The known generator generates a Poisson pulse train 33 controlled by a digital binary code.

A disadvantage of the known generator is its limited functionality, since it does not allow the formation of a Markov process with two states, and the complexity of its device, due to the need to use a delay line.

The aim of the invention is to expand the functionality of the generator by forming a discrete Markov process with d & s states and simplifying the generator device by reducing the volume of electronic equipment without reducing the accuracy of its operation by eliminating complex implementation of the delay line.

The goal is achieved by the fact that in a random process generator containing the first sensor of a Poisson pulse stream, a delay element whose output is connected to the installation input of the counter, the discharge outputs of which are connected to the inputs of the corresponding bits of the gated decoder, the gate input of which is connected to the input of the delay element , the outputs of the gated decoder are connected to the first inputs of the corresponding elements AND of the first group, the second inputs of which are connected to the single outputs of the co the corresponding bits of the code register, and the outputs of elements AND of the first group are connected to the corresponding inputs of the first IL element, the second sensor of the Poisson pulse flow, the second group of AND elements, the second OR element, the trigger and the intensity equalization unit of two random streams are introduced, the first and second inputs which are connected to the outputs of the first and second sensors of Poissrino pulses, respectively, and the first and second. the outputs of the unit for typing the intensities of two random streams of pulses are connected to the input of the delay element and the counter input of the counter, respectively, the first inputs of the elements of the second group are connected to the corresponding outputs of the gated decoder, the second inputs of the elements of the second group are connected to zero outputs of the corresponding code register bits, and the outputs of elements AND of the second group are connected to the inputs of the second element | OR, respectively, the outputs of the first and second elements OR are connected to the unit and zero in triggers, respectively, the unit output of which is the output of the generator. In FIG. 1 shows the generator circuit diagram; in fig. 2 is a block diagram of the intensity equalization unit of two random streams of pulses. The random process generator contains the first 1 and second 2 sensors of Poisson pulses, bl 3 for equalizing the intensities of two random streams of pulses, delay element 4, counter 5, strobe decoder 6, first 7 and the second 8 groups of elements AND, register 9 of the code, first 10 and second 11 elements OR, trigger 12. The first 1 and second 2 sensors of a Poisson flow of pulses can be performed according to a typical scheme. containing a series-connected noise source, an amplifier, a threshold element, and a forming cascade. The unit 3 for equalizing the intensity of two random streams of pulses can also be implemented in the form of a logic circuit for converting two random streams of pulses with arbitrary intensities into streams of pulses of equal intensity. . The unit 3 for equalizing the intensity of two random streams of pulses contains a high-frequency generator 13, a trigger 14, a first 15, a second 16, a third 17 and a fourth 18 elements AND, the first 19 and second 20 elements OR, the frequency of the generator 13 determining the switching frequency of the trigger 14 one order of magnitude higher than the intensity of one of the two streams. At the same time, an equal distribution of the pulses of the flows 54 along the outputs of the four I elements (15-18) is produced, during which independent Poisson flows are formed at the outputs of the corresponding I elements. Taking into account the cross-links between the outputs of the I elements (16, 17) and the inputs of the elements OR- (19.20) at the inputs of the latter flows with equal intensities are formed. Counter 5 is a sequential chain of triggers operating in counting mode. Gated decoder 6 can be implemented as a decoder with potential outputs and groups of controllable keys that allow the polling impulses to pass to one of the outputs of the gated decoder 6 in accordance with the current state of counter 5. Register 9 is a group of memory elements in which contains the value of the control code represented as a military regular fraction. The generator works as follows. Using the alignment unit 3, Poisson pulses of sensors 1 and 2, having generally different intensities, are converted into Poisson streams with equal intensity without disturbing their probabilistic properties and initial mutual independence. Counter 5 registers a random number of pulses from one Poisson flow that occur at random intervals between pulses from another Poisson flow of pulses with the same intensity. Each flow pulse from the first output of block 3 interrogates the decoder 6 and, after the time required to terminate the transients in decoder 6 (this time is specified by delay elements 4), suppresses the contents of counter 5. The interrogator pulse of the decoder 6 passes to that decoder output 6, the number of which corresponds to the state of the counter 5 at the moment of polling. The conditional probabilities of the states of counter 5 at the time of the interrogation of the decoder 6 are determined by the known formula (4).

During generator operation, the flow pulses with intensity are distributed along the outputs of the decoder 6 and form non-intersecting and independent Poisson flows (4)

In accordance with the binary code established in register 9 by the control of the binary code, those elements of AND 7 of the first 7 (second 8) groups that correspond to register bits 9 containing units are opened.

On the first 10 and the second 11 elements of the OR, which play the role of the private streams, there are formed direct and additional Poissbot flows of pulses with corresponding intensities.

(2,; ..; og „l chl

(}

S

i1-x} (2)

-%

where f, CT-0 are respectively the direct and inverse values of the control binary code, represented as a binary regular fraction.

Pulse streams from the outputs of the .iweHTOB ele or affect the single and zero-input trigger 12. Correspondingly, trigger 12 of the trigger 12 at its output has formed a discrete Markov process with two states (1.0). In accordance with known results and with (1) and (2), the parameters ip (1) and P (0) of the generated Markov

the process is determined only by the value of the control code

  f-x

.

P (0)

(31

V4

and does not depend on the intensities of the sensors 1, 2, which indicates

high accuracy of the proposed generator. The intensity affects only the scale of the formed Markov process, determining the parameters (a, b) of the exponential distribution of the pulse durations G and pauses V.

-of

lOlfNcie

o ((x) L, -G70,

-fet

u) (, b xd,. (41

Thus, the proposed generator, in comparison with the prototype Generator, which is the basic object, has enhanced functionality while substantially simplifying its device. It forms a discrete Markov process with two states with a high accuracy of Ls, determined by the control digit of the binary code. Line replacement, delays by the logic device for leveling random streams of pulses increases regularity (uniformity)

structures that provide a possibility;

the implementation of the proposed generator in the form of a unified micromodule based on an integrated technology.

Claims (1)

A RANDOM PROCESS GENERATOR, comprising a first Poisson pulse flow sensor, a delay element, the output of which is connected to the installation input of the counter, the outputs of the discharges of which are connected to the inputs of the corresponding bits of the gated decoder, whose gate input is connected to the input of the delay element, the outputs of the gated decoder are connected to the first inputs of the corresponding elements And the first group, the second inputs of which are connected to the unit outputs of the corresponding bits of the code register, and the outputs And elements of the first group are connected to the corresponding inputs of the first OR element, characterized in that, in order to expand the functionality of the generator by giving the formed process the properties of a Markov process with two states and simplifying the generator, it contains a second Poisson pulse flow sensor, the second group of elements And, the second OR element, a trigger and an intensity equalization unit of two random impulse flows, the first and second inputs of which are connected to the outputs of the first and second sensors Cove Poisson pulse streams, respectively, and first and second outputs of the alignment unit intensities of the two random pulses § streams are connected to the input of delay element and the counting input of the counter, respectively, the first inputs of AND gates of the second group are connected to the respective outputs of the gated decoder, second; the inputs of the AND elements of the second group are connected to the zero outputs of the corresponding bits of the code register, and the output1 of the elements of the second group are connected to the corresponding inputs of the second OR element, the outputs of the first and second OR elements are connected to the unit and zero inputs of the trigger, the unit output of which is the output of the generator. SU, ... 1124295 1 1124295 1