SU1700555A1 - Stochastic duration pulse generator - Google Patents

Abstract

The invention relates to computing and can be used in the construction of pulse shapers, the duration of which is subject to a negative binomial distribution. The purpose of the invention is the expansion of the field of application due to the formation of pulses, the duration of which is subject to a negative binomial distribution law. The generator contains a generator of 1 pulses, a generator of 2 uniformly distributed random numbers, a decoder 3, triggers 4 and 5, counters 6-8, registers 9-11 of memory, element 12, elements OR 13 and 14, elements BAN 15 and 16. Delivered The goal is achieved by introducing new links and blocks. 1 il.

Description

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The invention relates to computing, in particular, to a device for generating pulses, whose duration values are random and distributed according to a negative binomial law,

The purpose of the invention is to expand the field of application of the generator due to the formation of pulses whose duration is subject to the negative-binomial distribution law.

The drawing shows a structural diagram of the generator.

The generator contains a generator of 1 pulses, a generator of 2 uniformly distributed random numbers, a decoder 3, triggers 4 and 5, counters 6-8, registers 9-11 of memory, element 12, elements OR 13 and 14, elements BAN 15 and 16 .

The generator works as follows.

In the initial state, the trigger 4 is set to the zero state, the trigger 5 is set to one. In the initial state from registers 9 and 10, counters 6 and 7 recorded the number, which is a parameter of the negative binomial distribution, from register 11, counter 8 recorded the number M, which determines the maximum permissible pulse duration. The signal from the invert output of trigger 4 through the OR element 14 is fed to the control input of the BAN 15 element, thereby preventing the signal from passing. Polling to the input condition at zero of the trigger 5, and simultaneously through the OR element 13 enters the trigger start input of generator 1. At the same time the pulses from the output of the generator 1 begin to arrive at the subtracting input of the counter 6 and to the input of the poll of the generator 2 of uniformly distributed random numbers. Upon the arrival of a pulse at the polling input of the generator 2, it produces a random number, which is fed to the inputs of the decoder 3.

After decoding, at the output of the decoder 3, a zero or a single signal is generated with probabilities p and q 1-p. The signal from the output of the decoder to the subtracting input of counter 7 causes a decrease in the content of counter 7 by one. Upon the arrival of the K-ro pulse to its subtracting input, the counter 6 is zeroed, which causes the output of the overflow of the counter 6 to cause a signal that is fed to the read input of the register 9 to the counter 6 and to the input of the unit to the trigger unit 4. As a result, the device is ready for the arrival of the pulse Poll, in the counter 7 recorded a certain number (KY).

When a trigger signal appears at the Poll input input, trigger 5 is set to the zero state. The signal from the inverted output of the trigger 5, coming through the OR element 14 to the control input of the BAN 15 element, closes the device input until the end of the formation of the output pulse. The same signal through the element OR 13 starts the pulse generator, simultaneously closes the passage of the pulses from the output of generator 1 to the subtracting input of counter 5, arriving at the control input of the BAN 16, and allows the passage of pulses from the output of generator 1 through the element 12 to the subtracting input of counter 8. Upon arrival (KY) -ro of a single signal on its subtracting input, the counter 7 is zeroed out, which causes the output of the overflow of the counter 7 of a single signal, which is fed to the read input of the register 10 and to the input Reset of the counter 8, causing the K and M numbers to be written in the counters 7 and 8, respectively. In this case, the signal that arrives at the Reset 8 input and causes the M number to be overwritten from the register into the counter 8 does not cause the appearance of a single signal at the counter 8 transfer output. 7 functions in a similar way. At the same time, the same signal from the overflow output of the counter 7 is fed to the input of the installation in O of the trigger 4 and to the input of the installation into 1 of the trigger 5. As a result, the device returns to its initial state. Similarly, the device returns to the same state if a single signal at the overflow output of counter 8 is wired earlier than at the output of overflow of counter 7. Thus, in the inverse output of trigger 4, a continuous spectrum of pulse duration distributions is obtained according to a negative binomial law, and Element I 12 receive bursts of pulses, the number of which is also randomly distributed according to a negative binomial law with the probability of an event.

Claims (1)

Claims An impulse generator with a random duration, comprising first and second triggers, a pulse generator and a generator of uniformly distributed random numbers, the output of which is connected to the input of the decoder, the inverse output of the first trigger is the output of the generator, which is fields of application by forming pulses, the duration of which is subject to the negative-binomial law, two BANKS, two OR elements, three counters, three memory registers are introduced into it and element And, the inverse output of the first trigger is connected to the first input of the element And whose output is connected to the subtractive input of the first counter, the overflow output of which is connected to the read input of the first memory register and the reset input of the second counter, the overflow output of which is connected to the second input the memory register and the reset output of the first counter, the overflow output of the second counter — with the installation input into O and into 1, respectively, the first and second triggers, the inverse output of the second trigger — with the first inputs ne of the first and second elements OR, the output of the first element OR - with the start input of the pulse generator, the output of which is connected to the polling input of the generator of uniformly distributed random numbers, the second input of the And element and the information input of the first BAN element, the output of which is connected to the subtracting input of the third the counter whose overflow output is connected to the read input of the third memory register and connected to the zeroing input of the second trigger, the output of the second element OR is connected to the control input of the second element ZAPR The ET, whose output is connected to the installation input to 1 of the first trigger, whose output is connected to the second inputs of the first and second OR elements and connected to the control input of the first BAN element, the information input of the second BAN element is the Poll generator input, the decoder output is connected to the subtractor the input of the second counter, the outputs of the memory registers — with the information inputs of the counter of the same name, the overflow outputs of which are connected to their pre-installation inputs.