Home // COCORA 2017, The Seventh International Conference on Advances in Cognitive Radio // View article

Spread Spectrum-Based Underlay Cognitive Radio Wireless Networks

Authors:
Saed Daoud
David Haccoun
Christian Cardinal

Keywords: Cognitive radio; spread spectrum; outage probability; average bit error rate.

Abstract:
In this paper, we investigate the performance of underlay cognitive radio (CR) systems that employ spread spectrum (SS). In particular, we consider a single-user secondary (cognitive) system that coexists with a multiple-user primary system. The quality of service of the primary system is protected by placing a maximum allowable interference power at the primary receiver (PR).We first derive the cumulative distribution function of the signal-to-interference-plus-noise ratio (SINR) at the secondary receiver (SR), which is then used to evaluate the outage probability and average bit error rate (ABER) of the secondary system. Simulation results verified by Monte-Carlo simulations show that SS-based underlay CR systems outperform conventional underlay CR systems by adapting the spreading factor (SF) of the spreading sequences.

Pages: 20 to 24

Copyright: Copyright (c) IARIA, 2017

Publication date: April 23, 2017

Published in: conference

ISSN: 2308-4251

ISBN: 978-1-61208-551-7

Location: Venice, Italy

Dates: from April 23, 2017 to April 27, 2017