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Adaptive Resource Allocation in Multiuser OFDM System Based on Genetic Algorithm

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3 Author(s)
Bo Liu ; Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan ; Mingyan Jiang ; Dongfeng Yuan

Multiuser orthogonal frequency division multiplexing (MU-OFDM) is a promising technique for achieving high downlink capacities in future cellular and wireless local area network systems. The capacity of MU-OFDM can be maximized as long as subchannels and power are allocated adaptively, a new method based on genetic algorithm (GA) is proposed for adaptive power allocation in MU-OFDM system. Some proportional fairness constraints are also added to assure that each user can achieve a required data rate. Each subchannel to the user with the best channel-to-noise ratio has been assigned and an optimal power allocation algorithm based on GA has been proposed. The results demonstrate that the new method we proposed is optimal and efficient to resource allocation.

Published in:

Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on  (Volume:1 )

Date of Conference:

6-8 Jan. 2009

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