Transmit Antenna Selection in Underlay Cognitive Radio Environment
Abstract
Cognitive radio (CR) technology addresses the problem of spectrum under-utilization. In underlay CR mode, the secondary users are allowed to communicate provided that their transmission is not detrimental to primary user communication. Transmit antenna selection is one of the low-complexity methods to increase the capacity of wireless communication systems. In this article, we propose and analyze the performance benefit of a transmit antenna selection scheme for underlay secondary system that ensures the instantaneous interference caused by the secondary transmitter to the primary receiver is below a predetermined level. Closed-form expressions of the outage probability, amount of fading, and ergodic capacity for the secondary network are derived. Monte-carlo simulations are also carried out to confirm various mathematical results presented in this article.
Cite
@article{arxiv.1404.5083,
title = {Transmit Antenna Selection in Underlay Cognitive Radio Environment},
author = {Muhammad Hanif and Hong-Chuan Yang and Mohamed-Slim Alouini},
journal= {arXiv preprint arXiv:1404.5083},
year = {2014}
}
Comments
16 pages, 5 figures