Adaptive Resource Allocation for MIMO-OFDM Based Wireless Multicast Systems

Multiple antenna orthogonal frequency division multiple access (OFDMA) is a promising technique for the high downlink capacity in the next generation wireless systems, in which adaptive resource allocation would be an important research issue that can significantly improve the performance with guara...

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Bibliographic Details
Published in:IEEE transactions on broadcasting 2010-03, Vol.56 (1), p.98-102
Main Authors: JIAN XU, LEE, Sang-Jin, KANG, Woo-Seok, SEO, Jong-Soo
Format: Article
Language:English
Subjects:
Adaptive resource allocation
Adaptive systems
Algorithms
Antennas
Applied sciences
Broadcast technology
Dynamic tests
Dynamical systems
Dynamics
Exact sciences and technology
Information, signal and communications theory
Laboratories
MIMO
Multicast
Multicast algorithms
multicast service
Multiplexing
OFDM
Operation, maintenance, reliability
Orthogonal Frequency Division Multiplexing
Quality of service
Resource allocation
Resource management
Signal and communications theory
Systems, networks and services of telecommunications
Telecommunication traffic
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Unicast
water-filling
Wireless networks
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Summary:Multiple antenna orthogonal frequency division multiple access (OFDMA) is a promising technique for the high downlink capacity in the next generation wireless systems, in which adaptive resource allocation would be an important research issue that can significantly improve the performance with guaranteed QoS for users. Moreover, most of the current resource allocation algorithms are limited to the unicast system. In this paper, dynamic resource allocation is studied for multiple antenna OFDMA based systems which provide multicast service. The performance of multicast system is simulated and compared with that of the unicast system. Numerical results also show that the proposed algorithms improve the system capacity significantly compared with the conventional scheme.
ISSN:0018-9316
1557-9611
DOI:10.1109/TBC.2009.2039691