Harmonic mean and end-to-end performance of transmission systems with relays

被引：343
作者：
Hasna, MO [1 ]
Alouini, MS [1 ]
机构：
[1] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2004年 / 52卷 / 01期
基金：
美国国家科学基金会;
关键词：
average bit-error rate (BER); collaborative/cooperative/multiuser diversity; harmonic mean; multihop transmission; Nakagami fading; outage probability;
D O I：
10.1109/TCOMM.2003.822185
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：
Closed-form expressions for the statistics of the harmonic mean of two independent and identically distributed gamma variates are presented. The probability density function of the harmonic mean of two F variates is also derived. These statistical results are then applied to study the performance of wireless communication systems with nonregenerative relays over flat Nakagami fading channels. More specifically, outage probability formulas for noise-limited systems as well as systems affected by interference are obtained. Furthermore, general expressions for average bit-error rates are also derived. Finally, comparisons between regenerative and nonregenerative systems are presented. Numerical results show that the former systems clearly outperform the latter ones for low average signal-to-noise ratios (SNRs). They also show that the two systems have similar performance at high average SNRs.
引用
收藏
页码：130 / 135
页数：6
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