Adaptive power allocation with user prioritization for downlink orthogonal frequency division multiple access systems
Date
2004
Authors
Chee, K.
Lim, C.
Choi, J.
Editors
Wong, L.
Advisors
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Conference paper
Citation
2004 9th International Conference on Communication Systems: (ICCS): Singapore, September 6-9, 2004 / pp.210-214
Statement of Responsibility
Chee, T.K.; Cheng-Chew Lim; Jinho Choi
Conference Name
IEEE International Conference on Communication Systems (9th : 2004 : Singapore)
Abstract
Maximizing the capacity of a downlink orthogonal frequency division multiple access (OFDMA) system with prioritization of user-services is investigated. An iterative algorithm is proposed to determine the capacity of individual user from a limited and varying power budget when the channel is subjected to fading, shadowing and propagation path loss. Simulation shows that the proposed algorithm not only can obtain achievable capacity of the users' requested services but also conserve excess transmit power if a lesser power budget is adequate to achieve the desired capacity.
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Copyright © 2004 IEEE