Impact of Outdated Feedback on the Performance of M-QAM Adaptive Modulation in User Selection Diversity Systems with OSTBC over MIMO Rayleigh Fading Channels

被引：0
|
作者：
Torabi, Mohammad [1 ]
Frigon, Jean-Francois [1 ]
机构：
[1] Ecole Polytech, Dept Elect Engn, Montreal, PQ H3C 3A7, Canada
来源：
2012 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL) | 2012年
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中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper presents an evaluation of the impact of channel time variations on performance of multiuser selection diversity systems employing orthogonal space-time block coding (OSTBC) over MIMO Rayleigh fading channels. A rate-adaptive M-QAM modulation along with the maximum signal-to-noise-ratio (SNR) based user selection diversity is considered. Analytical expressions are derived for the average spectral efficiency, average bit error rate (BER), and bit error outage (BEO) of the system. Using the results obtained from the analytical expressions as well as from Monte-Carlo simulations, the impact of channel time variations on the system performance is evaluated.
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页数：5
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