Precoding for OFDM Systems with Imperfect Channel State Information at the Transmitter

被引：0

作者：

Xu, Chongbin ^{[1
]}

Wang, Hao ^{[1
]}

Lin, Xiaokang ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2011年 / E94B卷 / 06期

关键词：

OFDM; imperfect CSIT; linear precoding; iterative LMMSE detection; WIRELESS COMMUNICATION; LIMITED FEEDBACK; MIMO CHANNELS; DESIGN;

D O I：

10.1587/transcom.E94.B.1770

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：

We study the transmission techniques in orthogonal frequency division multiplexing (OFDM) systems with imperfect channel state information at the transmitter (CSIT). We focus on the issue of utilizing the available CSIT by a single forward error control (FEC) code. We first analyze the system performance for the ideal coding case. We then develop a simple but efficient scheme for the practical coding case, which is based on joint FEC coding and linear precoding at the transmitter and iterative linear minimum-mean-square-error (LMMSE) detection at the receiver. Numerical results show that significant performances gains can be achieved by the proposed scheme.

引用

页码：1770 / 1773

页数：4

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