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arXiv · 1805.05571

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

Imran Shafique Ansari·Mohamed-Slim Alouini·Julian Cheng
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Abstract

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.

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Imran Shafique Ansari, Mohamed-Slim Alouini, Julian Cheng. 2018-05-15. Ergodic Capacity Analysis of Free-Space Optical Links With Nonzero Boresight Pointing Errors. https://doi.org/10.1109/twc.2015.2418285

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