高斯白噪声信号源的研制

Research on White Gaussian Noise Generator

噪声,如果它的幅度分布符合高斯分布而功率谱密度是均匀分布的,则称为高斯白噪声,将其叠加在载频信号上就形成了最基本的噪声和干扰模型,该信号可以模拟大气层中的环境对产品性能进行验证。本文旨在介绍通过对高斯白噪声的研究,研制一款专用的高斯白噪声信号源,配合误码仪等设备可以有效地检验通信设备抗干扰的能力。

A noise is called White Gaussian noise（ WGN） if its amplitude follows Gaussian distribution and its power spectral density（ PSD） is uniformly distributed. A basic noise interference model is formed when WGN is added on the carrier. This signal can be used to simulate atmospheric environment to test the product performance. This paper introduces the research on WGN,develops a specific WGN generator,which may effectively test the anti-interference ability of communication equipment with the help of the bit error tester.