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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…

Information Theory · Computer Science 2018-05-16 Imran Shafique Ansari , Mohamed-Slim Alouini , Julian Cheng

In this work, we carry out a unified performance analysis of a dual-hop fixed gain relay system over asymmetric links composed of both radio-frequency (RF) and unified free-space optics (FSO) under the effect of pointing errors. The RF link…

Information Theory · Computer Science 2014-04-07 Emna Zedini , Imran Shafique Ansari , Mohamed-Slim Alouini

In this work, the performance analysis of a dual-hop relay transmission system composed of asymmetric radio-frequency (RF)/free-space optical (FSO) links with pointing errors is presented. More specifically, we build on the system model…

Information Theory · Computer Science 2013-02-19 Imran Shafique Ansari , Ferkan Yilmaz , Mohamed-Slim Alouini

Free-space optical (FSO) links are considered as a cost-efficient way to fill the backhaul/fronthaul connectivity gap between millimeter wave (mmWave) access networks and optical fiber based central networks. In this paper, we investigate…

Information Theory · Computer Science 2020-04-14 Yan Zhang , Jiayi Zhang , Liang Yang , Bo Ai , Mohamed-Slim Alouini

The mixed radio frequency (RF)/free-space optical (FSO) relaying is a promising technology for coverage improvement, while there lacks unified expressions to describe its performance. In this paper, a unified performance analysis framework…

Information Theory · Computer Science 2015-07-22 Jiayi Zhang , Linglong Dai , Yu Zhang , Zhaocheng Wang

Free space optics (FSO) is a promising solution for the need to very high data rate point-to point communication. FSO communication technology became popular due to its large bandwidth potential, unlicensed spectrum, excellent security and…

Optics · Physics 2012-03-15 Bobby Barua , Tanzia Afrin Haque , Md. Rezwan Islam

We analyze the performance of a free-space optical (FSO) link affected by atmospheric turbulence and line-of-sight (LOS) blockage. For this purpose, the atmospheric turbulence induced fading is modeled by the M-distribution, which includes…

The free-space optical (FSO) communications can achieve high capacity with huge unlicensed optical spectrum and low operational costs. The corresponding performance analysis of FSO systems over turbulence channels is very limited,…

Information Theory · Computer Science 2016-11-18 Jiayi Zhang , Linglong Dai , Yanjun Han , Yu Zhang , Zhaocheng Wang

A major performance degrading factor in free space optical communication (FSO) systems is atmospheric turbulence. Spatial diversity techniques provide a promising approach to mitigate turbulence-induced fading. In this paper, we study the…

Information Theory · Computer Science 2015-02-03 Mohmmadreza Aminikashani , Murat Uysal , Mohsen Kavehrad

In this paper, we investigate the performance of the dual-hop free space optical (FSO) communication systems under the effect of strong atmospheric turbulence together with misalignment effects (pointing error). We consider a relay assisted…

Information Theory · Computer Science 2017-09-19 Neha Mishra , D. Sriram Kumar , Pranav Kumar Jha

Free-space optical communication is emerging as a low-power, low-cost, and high data rate alternative to radio-frequency communication in short-to medium-range applications. However, it requires a close-to-line-of-sight link between the…

Systems and Control · Electrical Eng. & Systems 2021-02-10 I. N'Doye , W. Cai , A. Alalwan , X. Sun , W. G. Headary , M. -S. Alouini , B. -S. Ooi , T. -M. Laleg-Kirati

Terrestrial free-space optical (FSO) communication systems, while designed to operate on large unlicensed optical bandwidths, are fundamentally power-constrained due to stringent eye-safety regulations. Moreover, channel fluctuations…

Information Theory · Computer Science 2026-02-26 Himani Verma , Kamal Singh , Ranjan K. Mallik

The performance of equal gain combining reception at free-space optical communication systems is analytically studied and evaluated. We consider the case when the total received signal undergoes independent and not necessarily identically…

Information Theory · Computer Science 2017-02-15 Nikolaos I. Miridakis , Theodoros A. Tsiftsis

In this paper, we analyze the secrecy outage performance for more realistic eavesdropping scenario of free-space optical (FSO) communications, where the main and wiretap links are correlated. The FSO fading channels are modeled by the…

Information Theory · Computer Science 2021-03-17 Yun Ai , Aashish Mathur , Long Kong , Michael Cheffena

Free space optical (FSO) communication has been receiving increasing attention in recent years with its ability to achieve ultra-high data rates over unlicensed optical spectrum. A major performance limiting factor in FSO systems is…

Information Theory · Computer Science 2016-09-21 Mohammadreza Aminikashani , Mohsen Kavehrad

Hybrid free space optical (FSO)/radio frequency (RF) systems have been proved to be reliable links for high-data-rate wireless backhauls. In this paper, we present a unified performance analysis of the hybrid FSO/RF transmission system…

Signal Processing · Electrical Eng. & Systems 2020-12-30 Long Huang , Siming Liu , Pan Dai , Mi Li , Gee-Kung Chang , Yuechun Shi , Xiangfei Chen

The performance of all-optical dual-hop relayed free-space optical communication systems is analytically studied and evaluated. We consider the case when the total received signal undergoes turbulence-induced channel fading, modeled by the…

Information Theory · Computer Science 2018-10-18 Nikolaos I. Miridakis , Dimitrios D. Vergados , Angelos Michalas

In this letter, the performance of multiuser-radio frequency/free space optics (RF/FSO) two-way relay network in the presence of interference is investigated. The FSO link accounts for pointing errors and both types of detection techniques,…

Signal Processing · Electrical Eng. & Systems 2019-05-09 Abhijeet Upadhya , Vivek K. Dwivedi , Mohamed-Slim Alouini

Integrating high altitude platforms (HAPs) and free-space optical (FSO) communications is a promising solution to establish high data rate aerial links for the next-generation wireless networks. However, practical limitations such as…

Signal Processing · Electrical Eng. & Systems 2023-07-19 Hossein Safi , Akbar Dargahi , Julian Cheng , Majid Safari

We investigate the performance of mixed free space optical (FSO)/millimeter-wave (mmWave) relay networks with interference at the destination. The FSO/mmWave channels are assumed to follow Malaga-M/Generalized-K fading models with pointing…

Information Theory · Computer Science 2019-05-03 Imene Trigui , Panagiotis D. Diamantoulakis , Sofiene Affes , George K. Karagiannidis
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