IEEE Access, Volume (7), Year (2019-1) , Pages (58611-58625)

Title : ( Exact and Asymptotic Analysis of Partial Relay Selection for Cognitive RF-FSO Systems With Non-Zero Boresight Pointing Errors )

Authors: Hamid Arezumand , Hossein Zamiri-Jafarian , EHSAN SOLEIMANI-NASAB ,

Citation: BibTeX | EndNote

Abstract

In this paper, we investigate the performance of asymmetric radio frequency -RF- and free space optical -FSO- dual-hop cooperative relay network along with a direct RF link between source and destination. The FSO link experiences double generalized Gamma turbulence in the presence of the generalized non-zero boresight pointing errors, and RF links experience non-identically distributed Nakagami-mfading. Moreover, considering both cognitive radio and non-cognitive scenarios, a partial relay selection -PRS- strategy has been employed. Furthermore, both relay selection and underlay power restriction are governed with the outdated channel state information -CSI-. We also assume both heterodyne and intensity modulation/direct detection methods in the FSO receiver. Under the assumption of amplify-and-forward relaying and PRS, we derive closed-form expressions for outage probability -OP- of both scenarios, while bit-error probability and ergodic capacity of the non-cognitive scenario are also obtained. The asymptotic expressions of OP and diversity order of this network are derived for both perfect CSI and outdated CSI cases. It is demonstrated that the diversity order is a function of the fading severity of the RF links, turbulence parameters of the FSO link, and pointing error, regardless of interference channel parameter of the primary user.

Keywords

, Cognitive radio network, double generalized Gamma, free space optical communications, non-zero boresight pointing errors, outdated channel state information, partial relay selection.
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@article{paperid:1074359,
author = {Arezumand, Hamid and Zamiri-Jafarian, Hossein and EHSAN SOLEIMANI-NASAB},
title = {Exact and Asymptotic Analysis of Partial Relay Selection for Cognitive RF-FSO Systems With Non-Zero Boresight Pointing Errors},
journal = {IEEE Access},
year = {2019},
volume = {7},
month = {January},
issn = {2169-3536},
pages = {58611--58625},
numpages = {14},
keywords = {Cognitive radio network; double generalized Gamma; free space optical communications; non-zero boresight pointing errors; outdated channel state information; partial relay selection.},
}

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%0 Journal Article
%T Exact and Asymptotic Analysis of Partial Relay Selection for Cognitive RF-FSO Systems With Non-Zero Boresight Pointing Errors
%A Arezumand, Hamid
%A Zamiri-Jafarian, Hossein
%A EHSAN SOLEIMANI-NASAB
%J IEEE Access
%@ 2169-3536
%D 2019

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