Research Article
Adaptive Rate and Power Allocation Schemes for OFDM/SDMA Systems
@INPROCEEDINGS{10.1109/CHINACOM.2007.4469446, author={Behrouz Maham and Esrafil Jedari and Alireza Enayati}, title={Adaptive Rate and Power Allocation Schemes for OFDM/SDMA Systems}, proceedings={2nd International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2008}, month={3}, keywords={Bit error rate Channel capacity Communications technology Multiaccess communication OFDM Power distribution Receiving antennas Resource management Transmitters Transmitting antennas}, doi={10.1109/CHINACOM.2007.4469446} }- Behrouz Maham
Esrafil Jedari
Alireza Enayati
Year: 2008
Adaptive Rate and Power Allocation Schemes for OFDM/SDMA Systems
CHINACOM
IEEE
DOI: 10.1109/CHINACOM.2007.4469446
Abstract
In this paper, adaptive resource allocation approaches, which jointly adapts power distribution and subcarrier allocation according to instantaneous channel conditions, is proposed for uplink OFDM/SDMA-based multiuser system. The first scheme utilizes adaptive algorithm to reduce symbol-error rate. The closed-form algorithm is derived for this idea. The second contribution in this paper deals with constant-rate transmissions over a spatial multiuser OFDM system. In the proposed system, the receiver jointly optimizes rate and power assignments for each user and then informs them to the transmitter via a low-rate feedback channels.
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