Performance of Primary Users in Spectrum Sharing Cognitive Radio Environment

  • Authors:

  • Abdallah K. Farraj;Eman M. Hammad

  • Affiliations:

  • Department of Electrical and Computer Engineering, Texas A&M University, College Station, USA 77843;Department of Electrical and Computer Engineering, Texas A&M University, College Station, USA 77843

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2013

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Abstract

This paper investigates the performance of the primary user in a multiuser cognitive radio environment. Using spectrum sharing method, multiple cognitive users compete to share a channel dedicated to the primary user in order to transmit their data to a common receiver unit. Only one cognitive user is scheduled to share the channel, and to do so, its transmit power should not increase the primary user's outage probability above a certain limit. The average bit error rate and the average channel capacity of the primary user are derived in this setup for different cognitive scheduling schemes. The performance measures of the primary user are found to depend on the cognitive user's scheduling criterion and on the parameters of the communication environment.