Optimal Channel Estimation for MIMO/OFDM Systems in Time-varying Wireless Channels

被引：0
|
作者：
Zhang, Han [1 ]
Dai, Xianhua [1 ]
Li, Dong [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Inform Sci & Tech, Depart Elect Engn, Guangzhou 510275, Guangdong, Peoples R China
来源：
2008 INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CIRCUITS AND SYSTEMS PROCEEDINGS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEM | 2008年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We address the problem of time-varying (TV) channel estimation for MIMO/OFDM systems. Firstly, the TV channel is modeled by truncated discrete Fourier bases (DFB) and covers the approximation frames of multiple OFDM symbols. Then, a two-step approach with analytical performance are adopted where in the first step the TV channel is optimally estimated following an minimum mean square error (MMSE) sense in one OFDM symbol. In the second step of the two-step approach, the channel estimates (derived in 1(st) step) are further enhance over multiple OFDM symbols by using a novel weighted average approach. Simulation confirms that the proposed approach significantly outperforms the conventional TV channel estimators.
引用
收藏
页码：332 / 335
页数：4
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