DocumentCode :
2934606
Title :
Adaptive Resource Allocation in Multiuser OFDM System Based on Genetic Algorithm
Author :
Liu, Bo ; Jiang, Mingyan ; Yuan, Dongfeng
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan
Volume :
1
fYear :
2009
fDate :
6-8 Jan. 2009
Firstpage :
270
Lastpage :
273
Abstract :
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.
Keywords :
OFDM modulation; genetic algorithms; multi-access systems; resource allocation; wireless channels; adaptive power allocation; adaptive resource allocation; cellular systems; channel-to-noise ratio; genetic algorithm; high downlink capacities; multiuser OFDM system; orthogonal frequency division multiplexing; proportional fairness constraints; wireless local area network systems; Bit error rate; Computer networks; Constraint optimization; Downlink; Genetic algorithms; Information science; Mobile communication; Mobile computing; OFDM modulation; Resource management; GA; MU-OFDM; resource allocation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on
Conference_Location :
Yunnan
Print_ISBN :
978-0-7695-3501-2
Type :
conf
DOI :
10.1109/CMC.2009.269
Filename :
4796999
Link To Document :
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