On Hybrid Cooperation in Underlay Cognitive Radio Networks

Mahmood N. H., Yilmaz F., Oien G. E., Alouini M.

46th Asilomar Conference on Signals, Systems and Computers, California, United States Of America, 4 - 07 November 2012, pp.308-312 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/acssc.2012.6489013
  • City: California
  • Country: United States Of America
  • Page Numbers: pp.308-312
  • Yıldız Technical University Affiliated: No


In wireless systems where transmitters are subject to a strict received power constraint, such as in underlay cognitive radio networks, cooperative communication is a promising strategy to enhance network performance, as it helps to improve the coverage area and outage performance of a network. However, this comes at the expense of increased resource utilization. To balance the performance gain against the possible over-utilization of resources, we propose a hybrid-cooperation technique for underlay cognitive radio networks, where secondary users cooperate only when required. Various performance measures of the proposed hybrid-cooperation technique are analyzed in this paper, and are also further validated numerically.