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We analysis the performances for the dual-hop fixed gain amplify-and-forward (AF) relay systems operating over mixed radio-frequency (RF) and free-space optical (FSO) links. The RF link is subject to Rician fading and the FSO link…

Signal Processing · Electrical Eng. & Systems 2017-11-28 Chao Wei , Zaichen Zhang

In this work, we investigate the performance of a dual-hop multiple relays system consisting of mixed Radio-Frequency (RF)/Free Space Optical (FSO) channels. The RF channels are subject to Rayleigh fading while the optical links experience…

Signal Processing · Electrical Eng. & Systems 2019-01-21 Elyes Balti , Brian K. Johnson

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 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

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

In this paper, we investigate a dual-hop relaying system, composed of radio frequency (RF) and free-space optical (FSO) link. Decode-and-forward (DF) relay is employed to integrate the first RF link and the second line-of-sight FSO links.…

Networking and Internet Architecture · Computer Science 2022-09-26 Milica I. Petkovic , Predrag N. Ivanis , Goran T. Djordjevic

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

In this work, we provide a detailed analysis of a dual-hop fixed gain (FG) amplify-and-forward relaying system, consisting of a hybrid radio frequency (RF) and free-space optical (FSO) channels. We introduce an impairment model which is the…

Signal Processing · Electrical Eng. & Systems 2019-02-12 Elyes Balti , Mohsen Guizani , Bechir Hamdaoui , Bassem Khalfi

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

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

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 paper, we provide a global framework analysis of a dual-hop mixed Radio Frequency (RF)/Free Space Optical (FSO) system with multiple branches/relays wherein the first and second hops, respectively, consist of RF and FSO channels. To…

Signal Processing · Electrical Eng. & Systems 2019-02-11 Elyes Balti , Mohsen Guizani

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

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 analysis of free space optical communication (FSO) system using relays and spatial diversity at the source is studied in this paper. The effect of atmospheric turbulence and attenuation, caused by different weather…

Signal Processing · Electrical Eng. & Systems 2018-04-03 Pranav Kumar Jha , Nitin Kachare , K Kalyani , D. Sriram Kumar

In this paper, the performance of two-way relaying in mixed RF/FSO communication system with a backup RF link is investigated. Uplink RF channels are used to send data of $K$ users to a two-way relay, $R$, whereas FSO link is mainly used to…

Information Theory · Computer Science 2019-11-15 Mohammed A. Amer , Suhail Al-Dharrab

Optical wireless communication (OWC) over atmospheric turbulence and pointing errors is a well-studied topic. Still, there is limited research on signal fading due to random fog in an outdoor environment for terrestrial wireless…

Information Theory · Computer Science 2021-12-28 Ziyaur Rahman , Tejas Nimish Shah , S. M. Zafaruddin , V. K. Chaubey

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

In this paper, we propose a dual-hop RF (Radio-Frequency)/FSO (Free-Space Optical) system with multiple relays employing the Decode-and-Forward (DF) and Amplify-and-Forward (AF) with a Fixed Gain (FG) relaying scheme. The RF channels are…

Signal Processing · Electrical Eng. & Systems 2019-02-11 Elyes Balti , Mohsen Guizani , Bechir Hamdaoui , Bassem Khalfi

In this paper, we analyze the performance of a two- way subcarrier intensity-modulated (SIM) amplify-and-forward (AF) relaying system over free-space optics (FSO) communication channels. The analysis takes into consideration attenuations…

Information Theory · Computer Science 2017-08-18 Jaedon Park , Chan-Byoung Chae , Giwan Yoon
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