Enhanced Phase-Shifted Pilots Based Channel Estimation for MIMO-OFDM Systems with Virtual Subcarriers

被引：0
|
作者：
Li, Dong [1 ]
Zhu, Xiaolong [1 ]
Yang, Hongwei [1 ]
Cai, Liyu [1 ]
机构：
[1] Alcatel Bell Co Ltd, R&I Ctr, Shanghai 201206, Peoples R China
来源：
2006 IEEE 63RD VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2006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：
Generalizing a conventional phase-shifted pilot (PSP) sequences and discrete Fourier Transform (DFT) based channel estimator to MIMO-OFDM systems with virtual subcarriers, this paper presents two enhanced channel estimators applying Wiener interpolation and smoothing. Simulation results show that the proposed schemes can almost eliminate the mean square error floor of the conventional PSP/DFT-based channel estimator and improve the channel estimation accuracy further in some cases. Additionally, the application of a robust channel correlation matrix estimator avoids the complicated measurement of channel statistical properties and thus makes die proposed schemes more feasible in practical systems.
引用
收藏
页码：1728 / 1732
页数：5
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