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Reseach Article

SNR Maximization using Fuzzy Rule based System in Relay Assisted Cognitive Radio Networks

by Kiran Sultan, Bassam A. Zafar, Waseem Khan, Atta-Ur-Rahman
Communications on Applied Electronics
Foundation of Computer Science (FCS), NY, USA
Volume 4 - Number 4
Year of Publication: 2016
Authors: Kiran Sultan, Bassam A. Zafar, Waseem Khan, Atta-Ur-Rahman

Kiran Sultan, Bassam A. Zafar, Waseem Khan, Atta-Ur-Rahman . SNR Maximization using Fuzzy Rule based System in Relay Assisted Cognitive Radio Networks. Communications on Applied Electronics. 4, 4 ( February 2016), 42-48. DOI=10.5120/cae2016652095

@article{ 10.5120/cae2016652095,
author = { Kiran Sultan, Bassam A. Zafar, Waseem Khan, Atta-Ur-Rahman },
title = { SNR Maximization using Fuzzy Rule based System in Relay Assisted Cognitive Radio Networks },
journal = { Communications on Applied Electronics },
issue_date = { February 2016 },
volume = { 4 },
number = { 4 },
month = { February },
year = { 2016 },
issn = { 2394-4714 },
pages = { 42-48 },
numpages = {9},
url = { },
doi = { 10.5120/cae2016652095 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
%0 Journal Article
%1 2023-09-04T19:53:33.855023+05:30
%A Kiran Sultan
%A Bassam A. Zafar
%A Waseem Khan
%A Atta-Ur-Rahman
%T SNR Maximization using Fuzzy Rule based System in Relay Assisted Cognitive Radio Networks
%J Communications on Applied Electronics
%@ 2394-4714
%V 4
%N 4
%P 42-48
%D 2016
%I Foundation of Computer Science (FCS), NY, USA

Performance enhancement of secondary communication, while adhereing to the interference constraint of the primary network in an underlay sepctrum sharing environemnt, is an active area of research. In this paper, we propose a Fuzzy Rule Based System (FRBS) assisted relay selection and transmit power allocation (RSTPA) technique that provides the secondary users the ability to coexist with the primary users in an energy-constrainted dual-hop Cognitive Radio Network. In this proposal, FRBS selects the optimal combination of relays aiming to maximize the signal-to-noise ratio (SNR) received at the destination, while guaranteeing that interference threshold of the primary network is not exceeded. The proposed scheme has been investigated for well-defined range of certain parameters. Simulation results prove that FRBS can accurately select the best combination of relays and maximize the SNR. Its performance in terms of end-to-end SNR has been compared with another scheme in the literature for multiple relay selection.

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Index Terms

Computer Science
Information Sciences


Cognitive Radio Network Underlay Spectrum Sharing Cooperative Communication Amplify-and-Forward Fuzzy Rule Based System.