PILOT SYMBOL DESIGN FOR CHANNEL ESTIMATION IN MIMO-OFDM SYSTEMS WITH NULL SUBCARRIERS

被引：0
|
作者：
Manasseh, Emmanuel [1 ]
Ohno, Shuichi [1 ]
Nakamoto, Masayoshi [1 ]
机构：
[1] Hiroshima Univ, Dept Artificial Complex Syst Engn, Higashihiroshima 7398527, Japan
来源：
18TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO-2010) | 2010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：
In this paper, pilot design for channel estimation in multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) systems with null subcarriers is considered, where the mean square error (MSE) is chosen as our optimization criterion. We design the placement of pilot symbols and their powers for multiple transmit antennas to minimize the MSE of the least square (LS) channel estimates. To reduce the interference of pilot symbols from other transmit antennas, an algorithm that ensures that the pilot symbols are disjoint from the ones of any other antenna is proposed. Simulation results based on IEEE 802.16e are presented to illustrate the superior performance of our proposed method over the existing standard and the partially equi-spaced pilot symbols.
引用
收藏
页码：1612 / 1616
页数：5
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