Impact of the Number of Antennas and Distances Among Users on Cognitive Radio Networks

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Hung Tran, Hans-Jürgen Zepernick, Hoc Phan
Title: Impact of the Number of Antennas and Distances Among Users on Cognitive Radio Networks
Conference name: International Conference on Advanced Technologies for Communications
Year: 2012
Publisher: IEEE
City: Hanoi, Vietnam
Organization: Blekinge Institute of Technology
Department: School of Computing (Sektionen för datavetenskap och kommunikation)
School of Computing S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/com
Authors e-mail: hung.tran@bth.se, hans-jurgen.zepernick@bth.se, hoc.phan@bth.se
Language: English
Abstract: In this paper, we study the impact of the number
of antennas and distances among users on the performance of a spectrum sharing system. In particular, we assume that a
secondary transmitter is equipped with a single antenna while
both secondary receiver and primary receiver have multiple
antennas. Also, it is assumed that the secondary users are subject to the peak interference power constraint. On this basis, the cumulative distribution function and probability density function for the signal-to-noise ratio are derived for Rayleigh fading channels. Moreover, using these results, we obtain closed-form expressions for the outage probability, ergodic capacity and an exact expression for symbol error probability. These formulas allow us to examine the impact of the number of antennas of the SU-Rx, the PU-Rx and distance among users on the system performance. Finally, Monte-Carlo simulations are provided to verify our analytical results.
Subject: Telecommunications\General
Keywords: Cognitive Radio Networks, Outage Probability, Ergodic Capacity, Symbol Error Probability
Edit