Cluster-Based Transmit Diversity Scheme for MIMO OFDM Systems

被引：0

作者：

Lee, Jungwon ^{[1
]}

Sun, Yakun ^{[1
]}

Nabar, Rohit ^{[1
]}

Lou, Hui-Ling ^{[1
]}

机构：

[1] Marvell Semicond, Santa Clara, CA 95054 USA

来源：

68TH IEEE VEHICULAR TECHNOLOGY CONFERENCE, FALL 2008 | 2008年

关键词：

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

For practical multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems, it is important to develop transmit diversity schemes that are transparent to a receiver in that the receiver does not need to perform additional processing. In this paper, we examine one of the most widely-used receiver-transparent transmit diversity schemes - the cyclic delay diversity (CDD) scheme. It is shown that the CDD scheme effectively increases the delay spread of the channel and that the performance degrades under non-ideal channel estimation. As a remedy to the performance loss due to non-ideal channel estimation, a cluster-based transmit diversity scheme is proposed, which garners almost all the benefits of the CDD scheme without degrading the performance of a cluster-based channel estimation. The simulation results are provided in the realistic setting of IEEE 802.16e WiMAX systems.

引用

页码：1749 / 1753

页数：5

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