A joint channel estimation and detection for frequency-domain equalization using an approximate EM algorithm

被引：13

作者：

Choi, JH ^{[1
]}

机构：

[1] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

来源：

SIGNAL PROCESSING | 2004年 / 84卷 / 05期

关键词：

frequency-domain equalization; joint channel estimation and detection; maximum-likelihood detection; expectation and maximization algorithm; iterative technique;

D O I：

10.1016/j.sigpro.2004.01.005

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

For orthogonal frequency division multiplexing (OFDM) and block-based single-carrier transmission with cyclic prefix (SCCP), the joint channel estimation and data detection in the frequency-domain has been considered with the expectation-maximization (EM) algorithm. While the computational complexity of the EM algorithm is reasonable in OFDM, it becomes prohibitively high in SCCP. Hence, we propose an approximate EM algorithm to reduce the complexity in this paper. It is shown that the channel estimation accuracy has been improved due to the joint processing and thereby the bit error rate (BER) is also improved. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：865 / 880

页数：16

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