Efficient clustering scheme for OFDMA-based multicast wireless systems using grouping genetic algorithm

Tan, C. K. and Chuah, T. C. and Tan, S. W. and Sim, M. L. (2012) Efficient clustering scheme for OFDMA-based multicast wireless systems using grouping genetic algorithm. Electronics Letters, 48 (3). 184-U70. ISSN 0013-5194

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Official URL: http://dx.doi.org/10.1049/el.2011.3429

Abstract

The spectral inefficiency problem faced by the conventional multicast schemes in OFDMA-based multicast systems is investigated. To improve spectral efficiency, the multicast problem is formulated as a combinatorial clustering optimisation problem where multicast groups are divided into smaller subgroups and subcarriers are allocated to each subgroup. A novel multicast clustering scheme based on a grouping genetic algorithm is proposed to maximise the aggregate data rate. Simulation results show that the proposed scheme can achieve near-optimal performance while outperforming the conventional unicast and multicast schemes.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 12 Mar 2012 10:01
Last Modified: 24 Jan 2014 04:41
URI: http://shdl.mmu.edu.my/id/eprint/3382

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