SISO-OFDM Channel Estimation in the Presence of Carrier Frequency Offset

被引：0

作者：

Weng, Lingfan ^{[1
]}

Murch, Ross D. ^{[1
]}

Lau, Vincent K. N. ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Ctr Wireless Informat Technol, Kowloon, Hong Kong, Peoples R China

来源：

2006 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2006), VOLS 1-4 | 2006年

关键词：

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we consider the effect of CFO (Carrier Frequency Offset) on the performances of LS (Least Square) and LMMSE (Linear Minimum Mean Square Error) channel estimation algorithms for SISO (Single Input Single Output) - OFDM (Orthogonal Frequency Division Multiplexing) systems. Compact analytical expressions on the MSE (Mean Square Error) of the channel estimation under the effect of CFO are derived, while conventional works mainly rely on Cramer-Rao Bound or Monte Carlo simulations. Based on the expressions derived, it is observed that the MSE contributed by CFO increases at the rate about the square of CFO and it can not be reduced by using more training symbols. What is more, it is also found that LMMSE is more resistant to CFO compared to LS.

引用

页码：1444 / 1449

页数：6

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