Distributed Dynamic Resource Allocation for Cooperative Cognitive Radio

Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
The authors consider a Cognitive Radio (CR) scenario where the signals transmitted by a secondary user are relayed using an amplify-and-forward cooperation protocol. A distributed strategy for power allocation is derived that minimizes the outage probability of the cooperative CR communication system, under the constraint that the interference power experienced by the primary receiver does not exceed a given threshold. First, assuming that each CR node has ideal channel state information about its interference channel, they show that the average interference power constraint gives better outage probability performance than the peak power constraint.

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