上海交通大学学报

上海交通大学学报（自然版）

• 无线电电子学、电信技术 • 上一篇    下一篇

非高斯乘性噪声环境下伪码捕获方法

沈锋，孙枫   

  1. (哈尔滨工程大学 自动化学院， 哈尔滨 150001)
  • 收稿日期:2009-03-15 修回日期:1900-01-01 出版日期:2010-02-26 发布日期:2010-02-26

A Method of Pseudonoise Code Acquisition in Both NonGaussian and Multiplicative Noise ChannelsS

HEN Feng,SUN Feng   

  1. (College of Automation, Harbin Engineering University, Harbin 150001, China)
  • Received:2009-03-15 Revised:1900-01-01 Online:2010-02-26 Published:2010-02-26

摘要： 针对非高斯乘性噪声环境提出了一种伪码捕获方法，将伪码捕获等价为假设检验问题，利用局部最佳检测算法推导出非高斯乘性噪声环境下的伪码捕获检测统计量.给出了基于局部最佳检测算法的捕获结构，并与传统的平方和检测器和非高斯加性噪声环境下局部最佳检测器进行了性能仿真对比.结果表明，文中所提出的捕获方法在非高斯乘性噪声环境下检测性能有较大幅度的提高.

关键词: 伪码捕获, 乘性噪声, 非高斯信道

Abstract: In order to solve the pseudonoise (PN) code acquisition in nonGaussian multiplicative noise channels, a new detector was proposed. Modeling the acquisition problem as a hypothesis testing problem, the detector is derived for multiplicative noise, based on the locally optimum detection technique. The numerical results show that the proposed detector can offer substantial performance improvement over the conventional schemes in multiplicative noise channels.

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