北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2011, Vol. 34 ›› Issue (1): 121-125.doi: 10.13190/jbupt.201101.121.yangzh

• 研究报告 • 上一篇    下一篇

UWB信道盲估计的频域递归最小二乘实现

杨卓,郭黎利,李万臣   

  1. 哈尔滨工程大学 信息与通信工程学院, 哈尔滨 150001
  • 收稿日期:2010-05-02 修回日期:2010-06-10 出版日期:2011-02-28 发布日期:2011-02-28
  • 通讯作者: 杨卓 E-mail:yangzhuo@hrbeu.edu.cn
  • 基金资助:

    国家自然科学基金项目(60772129); 哈尔滨市科技创新人才研究专项项目(2010RFQXG030)

Frequency Domain Recursive Least Squares Realization of  UWB Blind Channel Estimation

  • Received:2010-05-02 Revised:2010-06-10 Online:2011-02-28 Published:2011-02-28

摘要:

为了实现超宽带(UWB)信号高效、稳定接收,提出一种基于信道频域特性的UWB信道盲估计算法. 利用跳时脉冲相位调制超宽带信号一维统计平稳特性,结合递归最小二乘算法计算,达到信道参数盲估计的目的. 计算机仿真结果与最大似然法信道盲估计算法结果的对比表明,新算法在误码率为10-4时,信噪比增益约为3dB. 新算法可同时对多路信道进行估计,对幅度和相位不存在模糊因子,且具有低复杂度的优点.

关键词: 超宽带, 信道估计, 频域, 递归最小二乘算法

Abstract:

In order to make the ultrawideband (UWB) signal received efficiently and stably, an ultrawideband channel estimation algorithm with low complexity based on the features in frequency domain is proposed. With the help of recursive least squares, the blind channel estimating is achieved based on the onedimensional statistical stationary feature of time hoppingpulse position modulation signal. The algorithm is of low complexity. Simulation shows the promising gain reaches 3dB when the bit error rate is 10-4, compared to maximum likelihood blind channel estimation. The algorithm can perform estimations for multiple channels, and there is no ambiguity in both the amplitude and the phase of the estimated channel.

Key words: ultrawideband, channel estimate, frequency domain, recursive least squares

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