標題: A new channel equalizer for OFDM-based wireless communications
作者: Chang, YM
Kuang, CW
Lin, CC
Sang, TS
Chang, HC
Lee, CY
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2005
摘要: This paper presents a new channel equalizer for OFDM-based communication systems. The channel equalizer consists of the adaptive estimation of channel frequency response (CFR) and the signal recovery. CFR is obtained by the two-dimensional linear interpolation of pilots from the frequency axis and the time axis. To avoid the noise enhancement in signal recovery, maximum-likelihood sequence estimation (MLSE) is applied to improve 1.5dB in SNR while using Rayleigh fading channel model with 30Hz Doppler frequency shift. As compared to the linear equalizer without feedback, the division free approach provides more accurate signal recovery in circuit implementation.
URI: http://hdl.handle.net/11536/18040
ISBN: 0-7803-9060-1
期刊: 2005 IEEE VLSI-TSA International Symposium on VLSI Design, Automation & Test (VLSI-TSA-DAT), Proceedings of Technical Papers
起始頁: 104
結束頁: 107
顯示於類別:會議論文