Performance Analysis and Training Power Allocation for Channel Estimation of MIMO/OFDM Systems Using Superimposed Training

被引：0

作者：

Zhang, Han ^{[1
]}

Dai, Xianhua ^{[2
]}

机构：

[1] S China Normal Univ, Dept Phys & Telecommun Engn, Guangzhou, Guangdong, Peoples R China

[2] S China Normal Univ, Dept Informat Sci & Technol, Guangzhou, Guangdong, Peoples R China

来源：

2010 6TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS NETWORKING AND MOBILE COMPUTING (WICOM) | 2010年

关键词：

channel estimation; MIMO/OFDM systems; superimposed training; training power allocation; OFDM SYSTEMS;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper deals with the problem of channel estimation for multiple-input multiple-output / orthogonal frequency-division multiplexing (MIMO/OFDM) systems based on superimposed training (ST). Channel coefficients are firstly estimated by judicious designing superimposed pilot sequences across different users. Then, we analyze the channel estimation performance and derive a closed-form expression for estimation variance. For wireless communications with a limited power, we optimize the ST power allocation by maximizing the lower bound of the average channel capacity. Illustrative simulation examples are provided.

引用

页数：4

共 5 条

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