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A QoS aware eigenmode based power allocation scheme for MIMO-OFDM multi-user systems

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/136955

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Title: A QoS aware eigenmode based power allocation scheme for MIMO-OFDM multi-user systems
Related: IEEE Global Telecommunications Conference (50th : 2007) (26 - 30 November 2007 : Washington, DC)
Related: GLOBECOM 2007 : 2007 IEEE Global Telecommunications Conference, p.3164-3168
DOI: 10.1109/GLOCOM.2007.599
Publisher: Piscataway, NJ : IEEE
Date: 2007
Author/Creator: Yang, Yubo
Author/Creator: Tian, Lin
Author/Creator: Fang, Gengfa
Author/Creator: Shi, Jinglin
Author/Creator: Li, Zhongcheng
Description: In this paper, a practical eigenmode based scheduling algorithm with double loops (ESDL) is proposed for multi-user MIMO/OFDM systems. The wireless channels are decomposed into several eigenmodes, and the eigenmode based power allocation is formulated into an optimization problem, whose object is to maximize the system capacity while guaranteeing users' QoS requirements. By replacing the QoS constraints with penalty functions, the problem is reformulated to a penalty problem with a given penalty factor, which is solved by a greedy power allocation (GPA) scheme as the inner loop. The penalty factor is then updated in the outer loop according to QoS constraints. Numerical results show that compared with other algorithms proposed in the literature, ESDL can result in significant improvement in channel efficiency, while at the same time guaranteeing minimum data rates of users.
Description: 5 page(s)
Resource Type: conference paper
Organisation: Macquarie University. Dept. of Electronic Engineering

Identifier: http://hdl.handle.net/1959.14/136955
Identifier: ISBN:9781424410439
Identifier: mq_res-ext-2-s2.0-39349105770
Language: eng
Rights: Copyright 2007 IEEE. Reprinted from GLOBECOM 2007 : 2007 IEEE Global Telecommunications Conference. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
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