Abstract:
In this paper, a joint power and subchannel allocation strategy is investigated for relay-aided multi-cell OFDMA networks. The problem is formulated for maximizing the ne...Show MoreMetadata
Abstract:
In this paper, a joint power and subchannel allocation strategy is investigated for relay-aided multi-cell OFDMA networks. The problem is formulated for maximizing the network throughput with minimal bandwidth cost under the users' minimum rate constraints. The method of Benders' Decomposition is employed to decompose the complicated problem into two subproblems, which solves the subchannel and power allocation issues separately. The low-complexity algorithms for two sub-problems are developed to allocate the subchannel and power adaptively. Simulation results show that the algorithm converges and benefits higher throughput and spectral efficiency.
Published in: 2011 11th International Symposium on Communications & Information Technologies (ISCIT)
Date of Conference: 12-14 October 2011
Date Added to IEEE Xplore: 01 December 2011
ISBN Information: