Capacity of Alamouti Coded OFDM Systems in Time-Varying Multipath Rayleigh Fading Channels

被引：0
|
作者：
Wang, Jun [1 ]
Wen, Oliver Yu [1 ]
Li, Shaoqian [1 ]
Cheng, Roger Shu Kwan [2 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab Commun, Chengdu 610054, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
来源：
2006 IEEE 63RD VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2006年
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
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：
The orthogonal frequency division multiplexing (OFDM) systems that exploit Alamouti transmit diversity technique can be divided into two categories, i.e. Alamouti space-time block-coded OFDM (STBC-OFDM) and space-frequency block-coded OFDM (SFBC-OFDM). In time-varying multipath Rayleigh fading channels, these systems suffer from both time and frequency selectivity of channels. Recently, several detection schemes have been proposed to improve the bit error rate (BER) performance of these systems. In this paper, the achievable average capacities of different detectors are investigated. Based on the probability density function (pdf) of the effective instantaneous signal-to-noise ratio (SNR) obtained by each detector, the analytical expressions of achievable average capacities for those systems with different detectors are derived. Numerical results are also presented to give some insights.
引用
收藏
页码：1923 / +
页数：2
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