Scheduling in a Spectrum-Sharing Cognitive Environment Under Outage Probability Constraint Academic Article uri icon


  • This article investigates a multiuser cognitive environment where secondary users compete to communicate over a channel licensed to a primary user using spectrum sharing. In this environment, both the primary and secondary users transmit to the same receiver unit, and the transmission power of the scheduled secondary user should satisfy the outage probability requirement of the primary user. Secondary users are ranked according to their channel strength, and performance measures are derived as a function of a generic channel rank. Bit error rate, channel capacity, and generated interference are investigated as performance measures. In addition, the performance of the proportional fair, random selection, and round-robin scheduling algorithms are investigated. Numerical results are presented to verify the theoretical analysis and investigate the effects the parameters of the communication environment have on the performance measures and the transmission power of the cognitive users. 2012 Springer Science+Business Media, LLC.

published proceedings


author list (cited authors)

  • Farraj, A. K., & Miller, S. L.

citation count

  • 10

complete list of authors

  • Farraj, Abdallah K||Miller, Scott L

publication date

  • May 2013