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Multi-channel pseudo-random signal generation method

A pseudo-random signal, multi-channel technology, used in random number generators and other directions, can solve problems such as insufficient quality

Inactive Publication Date: 2015-12-16
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
  • Description
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Problems solved by technology

That is to say, there is a strong correlation between the pseudo-random numbers generated by this method, so its quality is not good enough

Method used

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Embodiment Construction

[0060] A multi-channel pseudo-random digital noise signal generator, which operates more than two pseudo-random number generators to generate high-speed pseudo-random numbers with a long sequence period; wherein each pseudo-random number is generated based on the longest linear feedback shift of the parallel structure Register circuit; the pseudo-random numbers generated by each pseudo-random number generator involved in the operation are required to be independent of each other; it can generate multiple uniformly distributed pseudo-random numbers with multiple data bits in real time; it can also generate multiple pseudo-random numbers with other distributions number; can generate multiple broadband pseudo-random digital white noise signals; its mean value, variance and other parameters can be adjusted. The technical principle of the present invention is set forth below.

[0061] In the method of extracting several digits from the longest linear feedback shift register, some d...

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Abstract

The invention discloses a multi-channel pseudo-random signal generation method. The method comprises: performing operation on at least two pseudo-random number generators, and generating high-speed pseudo-random numbers with long sequence periods, wherein the generation of each pseudo-random number is based on a parallel-structure longest linear feedback shift register circuit. The pseudo-random numbers generated by the pseudo-random number generators participating in operation are required to be uncorrelated with one another; uniformly-distributed pseudo-random numbers with multiple data bits can be generated in real time; other distributed pseudo-random numbers also can be generated; wide-band digital white noise signals can be generated; parameters such as an average value, a variance and the like are adjustable; and multi-channel pseudo-random signals can be generated.

Description

technical field [0001] The invention relates to the field of signal generation, in particular to a multi-channel pseudo-random signal generation method. Background technique [0002] The power spectral density function of an ideal white noise signal is a constant at all frequencies, and its power is infinite, so it cannot be realized physically. A noise signal whose power spectral density function is approximately a constant in the frequency range of interest is called a band-limited white noise signal, which can be realized physically. Band-limited white noise signals have properties similar to ideal white noise signals. The bandwidth of the actual circuit system is limited. As long as the frequency range of the band-limited white noise signal generated is wider than the bandwidth of the actual circuit, its influence on the signal system is the same as that of the ideal white noise signal with the same spectral density and the same probability distribution. of. After dig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/58
Inventor 张则乐胡林军
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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