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 |