Adaptive multicast scheme for OFDMA based multicast wireless systems


Tan, Chee Keong and Tan, Su Wei and Chuah, Teong Chee (2011) Adaptive multicast scheme for OFDMA based multicast wireless systems. Electronics Letters, 47 (9). pp. 570-572. ISSN 0013-5194

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An adaptive multicast scheme is proposed to overcome the spectral inefficiency problem of OFDMA (orthogonal frequency-division multiple access)-based multicast networks in the presence of high link quality differences among multicast users. The proposed scheme divides a multicast group into smaller sub-groups and subcarriers are allocated to maximise the aggregate data rate. Having smaller multicast groups allows multiuser diversity to be exploited more efficiently. Simulation results show that the proposed scheme can achieve near-optimal performance whilst 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 Suzilawati Abu Samah
Date Deposited: 22 Jan 2014 03:38
Last Modified: 21 Sep 2021 06:38


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