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ICC
2009
IEEE

Optimal Relay Assignment and Power Allocation in Selection Based Cooperative Cellular Networks

9 years 9 months ago
Optimal Relay Assignment and Power Allocation in Selection Based Cooperative Cellular Networks
—We consider a system with a single base station communicating with multiple users over orthogonal channels while being assisted by multiple relays. Several recent works have suggested that selection, i.e., a single relay helping the source, is the best option in terms of the resulting complexity and overhead. However, in a multiuser setting, optimal relay assignment is a combinatorial problem. In this paper, using the sum rate as our design metric, we develop a convex optimization problem that provides an extremely tight upper bound on performance. We also provide a heuristic to find a close-to-optimal relay assignment. Simulation results using realistic channel models demonstrate the efficacy of the proposed scheme.
Sachin Kadloor, Raviraj Adve
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where ICC
Authors Sachin Kadloor, Raviraj Adve
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