Semi-blind channel identification in OFDM

被引：0
|
作者：
Thomas, TA [1 ]
Vook, FW [1 ]
Baum, KL [1 ]
机构：
[1] Motorola Labs, Commun Syst Res Lab, Schaumburg, IL 60196 USA
来源：
IEEE 55TH VEHICULAR TECHNOLOGY CONFERENCE, VTC SPRING 2002, VOLS 1-4, PROCEEDINGS | 2002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：
Semi-blind channel estimators promise to dramatically reduce the number of pilots needed for accurate channel estimation over pilot-only based techniques while providing much better performance than blind algorithms. This paper presents a novel semi-blind multi-user channel estimator for OFDM based on the maximum likelihood estimator. The estimator works by iterating between estimating the channels between multiple transmit antennas and each receive antenna and the respective symbols for each transmitter. Simulation results show that the semi-blind channel estimator is effective even when the frequency-domain pilot spacing is greater than the Nyquist spacing.
引用
收藏
页码：1747 / 1750
页数：4
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