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

Hsuan Yu Liu*, Yi Hsin Yu, Chien Jen Hung, Terng-Yin Hsu, Chen-Yi Lee

*Corresponding author for this work

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

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 - 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 - 2.0dB gain in SNR for 10% PER in different transmission modes.

Original languageEnglish
JournalProceedings - IEEE International Symposium on Circuits and Systems
Volume2
DOIs
StatePublished - 14 Jul 2003
EventProceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand
Duration: 25 May 200328 May 2003

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