Joint Maximum-Likelihood and MMSE Channel Estimator for UWB Communications

被引：0
|
作者：
周磊
周世东
姚彦
机构：
[1] Department of Electronic Engineering Tsinghua University
[2] Beijing 100084 China Beijing 100084 China Beijing 100084 China
[3] Department of Electronic Engineering Tsinghua University
来源：
Tsinghua Science and Technology | 2006年 / 05期
基金：
中国国家自然科学基金;
关键词：
ultra wideband (UWB); maximum-likelihood; minimum-mean-square-error (MMSE); channel es- timation; prior statistical knowledge; IEEE; 802.15.3a;
D O I：
暂无
中图分类号：
TN915 [通信网];
学科分类号：
0810 ; 081001 ;
摘要：
Channel estimation and synchronization are crucial problems in coherent ultra wideband (UWB) receiver designs. A joint maximum-likelihood (ML) and minimum-mean-square-error (MMSE) channel esti- mation scheme was developed for more precise channel estimates based on the assumption of exponential multipath decay. The performance improvement was analyzed theoretically with a computer simulation us- ing IEEE 802.15.3a ultra-wideband channel models. Theoretical and simulation results show that the scheme further improves the estimation performance of channel gains and multipath delays compared with the traditional ML channel estimator.
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页码：568 / 573
页数：6
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