Ergodic Capacity Analysis of Free-Space Optical Links With Nonzero Boresight Pointing Errors

被引：85
|
作者：
Ansari, Imran Shafique [1 ]
Alouini, Mohamed-Slim [1 ]
Cheng, Julian [2 ]
机构：
[1] King Abdullah Univ Sci & Technol, Comp Elect & Math Sci & Engn CEMSE Div, Thuwal 239556900, Makkah Province, Saudi Arabia
[2] Univ Britich Columbia, Sch Engn, Kelowna, BC V1V 1V7, Canada
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2015年 / 14卷 / 08期
关键词：
Ergodic capacity; free-space optical (FSO) communications; moments; optical wireless communications; pointing errors; turbulent channels; WIRELESS COMMUNICATION-SYSTEMS; AVERAGE CAPACITY; TURBULENCE CHANNELS; BER PERFORMANCE; PROBABILITY; COHERENT;
D O I：
10.1109/TWC.2015.2418285
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：
A unified capacity analysis of a free-space optical (FSO) link that accounts for nonzero boresight pointing errors and both types of detection techniques (i.e. intensity modulation/direct detection as well as heterodyne detection) is addressed in this work. More specifically, an exact closed-form expression for the moments of the end-to-end signal-to-noise ratio (SNR) of a single link FSO transmission system is presented in terms of well-known elementary functions. Capitalizing on these new moments expressions, we present approximate and simple closed-form results for the ergodic capacity at high and low SNR regimes. All the presented results are verified via computer-based Monte-Carlo simulations.
引用
收藏
页码：4248 / 4264
页数：17
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