Gaussian white noise generator based on FPGA (Field Programmable Gate Array)

A Gaussian white noise and generator technology, applied in the field of signal processing, can solve the problems of low output rate, poor effect, and unsuitability for complex system applications of digital Gaussian white noise, and achieve the effect of increasing output rate and reducing complexity

Inactive Publication Date: 2010-11-17
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the digital Gaussian white noise produced by this technology has a low output rate and poor effect, which is not suitable for the application of complex systems.

Method used

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  • Gaussian white noise generator based on FPGA (Field Programmable Gate Array)
  • Gaussian white noise generator based on FPGA (Field Programmable Gate Array)
  • Gaussian white noise generator based on FPGA (Field Programmable Gate Array)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] This embodiment includes: a pseudo-random sequence generating device, a computing device, a storage device, a counter and a control module, wherein: the control module is connected to the computing device to transmit a computing command signal, and the control module is connected to the storage device to transmit a data address signal and a valid data signal, The control module is connected with the pseudo-random sequence generating device to transmit sequence generating command signals, the computing device is connected to the storage device to transmit computing data and computing results, the pseudo-random sequence generating device is connected to the storage device to transmit pseudo-random sequence signals, and the counter is connected to the control module to transmit counting information.

[0018] The device for generating pseudo-random sequence is the first shift register.

[0019] The first shift register in this embodiment is a linear feedback shift register ...

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PUM

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Abstract

The invention relates to a Gaussian white noise generator based on an FPGA (Field Programmable Gate Array) in the technical field of signal processing, comprising a pseudorandom sequence generating device, an arithmetic device, a storage device and a control module, wherein the control module and the arithmetic device are connected to transmit arithmetic command signals, the control module and the storage device are connected to transmit data address signals and data valid signals, the control module and the pseudorandom sequence generating device are connected to transmit sequence generating command signals, the arithmetic device and the storage device are connected to transmit arithmetic data and an arithmetic result, and the pseudorandom sequence generating device and the storage device are connected to transmit pseudorandom sequence signals. The arithmetic device comprises a summator, a multiplier, a second shift register and a binary circuit selector. The invention greatly reduces the complexity of the device and improves the output speed of Gaussian white noise, and the variance of the obtained Gaussian white noise is approximate to 1, thereby the invention is suitable for complex systems.

Description

technical field [0001] The present invention relates to a device in the technical field of signal processing, in particular to a Gaussian white noise generator based on FPGA (Field Programmable Gate Array, Field Programmable Gate Array). Background technique [0002] In communication and control systems, Gaussian white noise is a very common noise signal, so it is necessary to use Gaussian white noise signal source to test and verify the anti-interference performance of the system. Meanwhile, in a wireless communication channel, a Gaussian white noise signal source is often required. Therefore, it is necessary to design and implement a Gaussian white noise signal source with simple structure and reliable performance for system detection. [0003] Existing Gaussian noise generators usually fall into two categories: physical noise generators and digital synthetic noise generators. Although the precision of the physical noise generator is relatively high, the implementation c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B29/00
Inventor 李振波王祺皓宋叶波陈佳品
Owner SHANGHAI JIAO TONG UNIV
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