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：

TsinghuaScienceandTechnology | 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

页码：19 / 24

页数：6