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

页码：4248 / 4264

页数：17

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