Abstract—Cooperative communication in cognitive radio networks has been introduced as an important and efficient technique to improve the transmission performance of Primary Users (PUs) or Secondary Users (SUs). In this paper, we consider a Cooperative Cognitive Radio Network (CCRN) consisting of multiple PUs and multiple SUs, where each PU can choose one SU as its relay node. To encourage the forwarding behavior of the SUs, PUs lease a fraction of their allocated spectrum to the corresponding relay SUs, so that the SUs are capable of transmitting their own data packets. A centralized resource management architecture is introduced and an energy efficiency based relay selection and power allocation scheme is proposed for the PUs and SUs. The optimization problem is formulated and solved based on a modified Kuhn-Munkres bipartite matching algorithm. Simulation results demonstrate the effectiveness of the proposed scheme. 
 

Index Terms—cognitive radio network, cooperative communications, energy efficiency, relay selection, resource allocation

Cite: Denis Bilibashi and Rong Chai, "Energy Efficiency Based Resource Allocation Scheme for Cooperative Cognitive Radio Networks," International Journal of Electronics and Electrical Engineering, Vol. 5, No. 1, pp. 7-14, February 2017. doi: 10.18178/ijeee.5.1.7-14