一种适用于超宽带系统的低复杂度RAKE接收机  

A Low Complexity RAKE Receiver for Ultra-Wideband Communication System

作　　者：张新跃[1] 陶小峰[2] 张平[2] 沈树群[1] 

机构地区：[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　　处：《北京邮电大学学报》2005年第3期93-95,共3页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60496312;60132010)

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.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.

关 键 词：超宽带 无线个域网 最小均方误差估计 RAKE接收机 

分 类 号：TN939533[电子电信—信号与信息处理]