Sub-optimal power allocation for downlink OFDMA systems
Date
2004
Authors
Chee, T.
Lim, C.
Choi, J.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Record of the 60th IEEE Vehicular Technology Conference, 2004; volume 3:pp.2015- 2019
Statement of Responsibility
Chee, T.K. ; Cheng-Chew Lim ; Choi, J.
Conference Name
IEEE Vehicular Technology Conference (60th : 2004 : Los Angeles, California)
Abstract
Spectral efficiency is important in designing wireless broadband communication systems. The paper investigates the problem of minimizing overall transmission power while maximizing the spectral efficiency in orthogonal frequency division multiple access (OFDMA) systems. Two adaptive power allocation schemes are presented to allocate transmission power to individual sub-carriers of each user in the downlink frequency-selective fading channels. The proposed algorithms are more computationally efficient than the conventional water-filling algorithm. Performance comparison to the optimal solution shows that the proposed schemes can achieve 99% of the optimum spectral efficiency.
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Dissertation Note
Provenance
Description
Copyright © 2004 IEEE