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Distance based an Efficient Transmit Power Control Scheme in Cognitive Radio System with Multiple Antennas

by Sandeep Kumar Jain, Manoranjan Rai Bharti, Amardip Kumar
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 72 - Number 21
Year of Publication: 2013
Authors: Sandeep Kumar Jain, Manoranjan Rai Bharti, Amardip Kumar
10.5120/12668-9382

Sandeep Kumar Jain, Manoranjan Rai Bharti, Amardip Kumar . Distance based an Efficient Transmit Power Control Scheme in Cognitive Radio System with Multiple Antennas. International Journal of Computer Applications. 72, 21 ( June 2013), 32-37. DOI=10.5120/12668-9382

@article{ 10.5120/12668-9382,
author = { Sandeep Kumar Jain, Manoranjan Rai Bharti, Amardip Kumar },
title = { Distance based an Efficient Transmit Power Control Scheme in Cognitive Radio System with Multiple Antennas },
journal = { International Journal of Computer Applications },
issue_date = { June 2013 },
volume = { 72 },
number = { 21 },
month = { June },
year = { 2013 },
issn = { 0975-8887 },
pages = { 32-37 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume72/number21/12668-9382/ },
doi = { 10.5120/12668-9382 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:38:33.101550+05:30
%A Sandeep Kumar Jain
%A Manoranjan Rai Bharti
%A Amardip Kumar
%T Distance based an Efficient Transmit Power Control Scheme in Cognitive Radio System with Multiple Antennas
%J International Journal of Computer Applications
%@ 0975-8887
%V 72
%N 21
%P 32-37
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

In this paper, a transmit power control scheme for a cognitive radio system (CRS) in a Rayleigh fading channel based on the location information of primary user is proposed. The situation where primary user (PU) i. e. licensed user share the spectrum with secondary user (SU) i. e. cognitive radio have been considered. First a mathematical model for probability of detection as a function of distance between PU transmitter and SU transmitter is developed. The mathematical model takes into account multiple antennas at SUs and uses energy detection (ED) with selective combining (SC) scheme. The maximum allowable transmit power at SU transmitter, to guarantee decodability of PU transmitter signal at PU receiver,is calculated by using the distancebetween PU transmitter and SU transmitter. The simulation results show that the probability of detection improves with the use of multiple antennas at SU transmitter. This improved probability of detection will result into more accurate calculations of the maximum allowable transmit power at SU transmitter.

References
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Index Terms

Computer Science
Information Sciences

Keywords

Cognitive radio (CR) dynamic spectrum access (DSA) energy detection (ED) path loss probability of detection transmit power control

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