Optimal pilot sequence design for channel estimation in MIMO OFDM systems

被引：34
作者：
Hu, D [1 ]
Yang, LX
Shi, YH
He, LH
机构：
[1] SE Univ, Dept Radio Engn, Nanjing 210018, Peoples R China
[2] Elect Data Syst Corp, Indianapolis, IN USA
来源：
IEEE COMMUNICATIONS LETTERS | 2006年 / 10卷 / 01期
关键词：
channel estimation; MIMO; OFDM; pilot tone;
D O I：
10.1109/LCOMM.2006.01016
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In orthogonal frequency division multiplexing (OFDM) systems, since virtual subcarriers are not used for transmission, approach of conventional uniformly placed pilot tones is not applicable in some situations. In this letter, based on nonuniform pilot tone placement, we derive optimal pilot sequences, which can achieve the minimum mean square error of the least squares estimate for multiple-input multiple-output (MIMO) OFDM systems. Simulation results demonstrate the effectiveness of the proposed approach.
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页码：1 / 3
页数：3
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