Method and device for generating a Gaussian white noise signal source

Abstract

The invention discloses a method and method for generating a Gaussian white noise signal source. The method includes: using a Combined Tausworthe random number generator in an FPGA to generate long-period uniformly distributed random numbers; A combination of number generators; non-uniform quantization of long-period uniformly distributed random numbers, and segmental fitting is used to map long-period uniformly distributed random numbers to broadband white Gaussian noise; a series of filter orders are used. Multiple groups of filters composed of the same number of filter coefficients convert the broadband white Gaussian noise into an intermediate frequency noise source with adjustable parameters. Implementing the method and device for generating a Gaussian white noise signal source of the present invention has the following beneficial effects: hardware resources can be saved, and it is convenient for FPGA to realize the conversion from uniformly distributed random numbers to Gaussian white noise.

Description

technical field [0001] The invention relates to the field of signal source generation, in particular to a method and device for generating a Gaussian white noise signal source. Background technique [0002] The Gaussian white noise signal source is an indispensable communication channel simulator, which has an important use in simulating satellite-ground and receiver channel noise. There are two main ways to generate Gaussian white noise: physical and digital. Although the physical noise source has higher precision, it is not easy to control. The digital method is simple and fast, and it is convenient to control parameters. There are many ways to generate digital Gaussian white noise. Generally, uniformly distributed random numbers are generated first, and then Gaussian random numbers are obtained through certain transformations. [0003] Document 1 (Huang Muxiong, Hou Jie, Hu Hai. Realization of Gaussian White Noise Generator in FPGA [J] Microcomputer Information, 2007, ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a Gaussian white noise that can save hardware resources and facilitate FPGA to realize the conversion from uniformly distributed random numbers to Gaussian white noise for the above-mentioned defects of consuming hardware resources and being inconvenient for FPGA implementation in the prior art. Method and device for generating noise signal source

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