Combining adaptive smoothing and decision-directed channel estimation schemes for OFDM WLAN systems

被引：0

作者：

Liu, HY ^{[1
]}

Yu, YH ^{[1
]}

Hung, CJ ^{[1
]}

Hsu, TY ^{[1
]}

Lee, CY ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Inst Elect, Hsinchu 300, Taiwan

来源：

PROCEEDINGS OF THE 2003 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL II: COMMUNICATIONS-MULTIMEDIA SYSTEMS & APPLICATIONS | 2003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, a new channel estimation method for OFDM WLAN systems is proposed. This proposal mainly consists of smoothing filtering and decision-directed tracking loop schemes, where the former is used to enhance performance at low SNR and the latter is exploited to enhance performance at high SNR respectively. Together with an adaptive channel management, better performance in terms of MSE and PER can be achieved. Simulation shows the proposed method (1) achieves better 9.0dB similar to 13.0dB gain in MSE than zero forcing criterion and better 2.0dB gain in MSE than conventional approaches in BPSK transmission, and (2) contributes 0.8dB similar to 2.0dB gain in SNR for 10% PER in different transmission modes.

引用

页码：149 / 152

页数：4

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