Outage Analysis of Practical FSO/RF Hybrid System With Adaptive Combining

被引：102
|
作者：
Rakia, Tamer [1 ]
Yang, Hong-Chuan [1 ]
Alouini, Mohamed-Slim [2 ]
Gebali, Fayez [1 ]
机构：
[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8W 3P6, Canada
[2] King Abdullah Univ Sci & Technol, Div Comp Elect & Math Sci & Engn CEMSE, Thuwal 239556900, Saudi Arabia
来源：
IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 08期
关键词：
Hybrid FSO/RF; gamma-gamma atmospheric turbulence; Nakagami-m fading model; outage probability; MRC combining;
D O I：
10.1109/LCOMM.2015.2443771
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Hybrid free-space optical (FSO)/radio-frequency (RF) systems have emerged as a promising solution for high-data-rate wireless transmission. We present and analyze a transmission scheme for the hybrid FSO/RF communication system based on adaptive combining. Specifically, only FSO link is active as long as the instantaneous signal-to-noise ratio (SNR) at the FSO receiver is above a certain threshold level. When it falls below this threshold level, the RF link is activated along with the FSO link and the signals from the two links are combined at the receiver using a dual-branch maximal ratio combiner. Novel analytical expression for the cumulative distribution function (CDF) of the received SNR for the proposed hybrid system is obtained. This CDF expression is used to study the system outage performance. Numerical examples are presented to compare the outage performance of the proposed hybrid FSO/RF system with that of the FSO-only and RF-only systems.
引用
收藏
页码：1366 / 1369
页数：4
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