北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (3): 93-95.doi: 10.13190/jbupt.200503.93.020

• 论文 • 上一篇    下一篇

一种适用于超宽带系统的低复杂度RAKE接收机

张新跃1,陶小峰2,张平2,沈树群1   

  1. 1北京邮电大学 电子工程学院, 北京 100876; 2北京邮电大学 电信工程学院, 北京 100876
  • 出版日期:2005-06-28 发布日期:2005-06-28

A Low Complexity RAKE Receiver for Ultra-Wideband Communication System

ZHANG Xinyue1,TAO Xiaofeng2,ZHANG Ping2,SHEN Shuqun1   

  1. 1 School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2 School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Online:2005-06-28 Published:2005-06-28

摘要:

根据超宽带室内信道特点,阐述了一种低复杂度RAKE接收合并方案,方案降低了采样速率. 此外,采用基于最小均方误差(MMSE)估计方法得到合并系数,使得接收机使用较少的分支数就能达到良好的性能. 仿真结果表明,在存在窄带干扰(NBI)和符号间干扰(ISI)的情况下,该MMSERAKE接收机性能要优于传统的最大比率合并(MRC)RAKE接收机.

关键词: 超宽带, 无线个域网, 最小均方误差估计, RAKE接收机

Abstract:

Compared to the characteristic of ultra-wideband (UWB) signal and multi-path propagation within indoor environment, a low complexity RAKE receiver scheme was expatiated, which debases system sample rate. Moreover, an algorithm based on minimum mean square error (MMSE) parameter estimation was proposed as well to reduce the finger number and to improve performance. The performance of simulation receiver bit error rate (BER) shows that the algorithm is adaptive to pulse based UWB system when narrowband interference and inter symbol interference (ISI) exist.

Key words: ultra-wideband, wireless person area network, minimum mean square error, RAKE receiver

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