Performance of Adaptive Subchannel Assignment-Based MIMO/OFDM Systems over Multipath Fading Channels

被引：0
|
作者：
潘亚汉
Khaled Ben Letaief
曹志刚
机构：
[1] Center for Wireless Information Technology Department of Electrical and Electronic Engineering The Hong Kong University of Science and Technology Kowloon Hong Kong China
[2] Nanjing Telecommunication Technology Institute Nanjing 210007 China State Key Laboratory on Microwave and Digital Communications Department of Electronic Engineering Tsinghua University Beijing 100084 China
来源：
Tsinghua Science and Technology | 2006年 / 01期
关键词：
multiple-input multiple-output (MIMO)/orthogonal frequency division multiplexing (OFDM); adaptive subchannel assignment; joint transmit and receive antenna array weighting; multipath fading channel;
D O I：
暂无
中图分类号：
TN914 [通信系统（传输系统）];
学科分类号：
0810 ; 081001 ;
摘要：
Adaptive antenna arrays at both the base and mobile stations can further increase system capac- ity and improve the quality of service of conventional orthogonal frequency division multiplexing (OFDM) systems. Conventional adaptive antenna array-based multiple-input multiple-output (MIMO)/OFDM systems use the sub-carriers characterized by the largest eigenvalue to transmit the OFDM symbols. This paper de- scribes the performance of adaptive subchannel assignment-based MIMO/OFDM systems over multipath fading channels. The system adaptively selects the eigenvectors associated with the relatively large sub- channel eigenvalues to generate the antenna array weights at the base and mobile stations and then adap- tively assigns the corresponding best subchannels to transmit the OFDM symbols. Simulation results show that the proposed system can achieve better performance than the conventional adaptive antenna array- based MIMO/OFDM system over multipath fading channels.
引用
收藏
页码：19 / 24
页数：6
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