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In this paper, the authors present a low-complexity Artificial Bee Colony (ABC) based interference aware relay assignment scheme with power control for a cognitive radio network comprises of one source, multiple relays and multiple destination nodes. The Exhaustive Search Algorithm (ESA) returns the optimal solution to the problem; yet it has a high computational complexity that grows exponentially with the number of users and relays. Their contribution includes formulating the jointly relay assignment with source and relays' power allocation as a mixed integer non-linear programming problem.
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