期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2011
卷号：8
期号：3
出版社：IJCSI Press
摘要：In this paper, we present a low-complexity bit and power allocation algorithm for multiuser MIMO-OFDM downlink transmission. In order to minimize the total transmit power under the condition that users QoS requirements are satisfied, a novel resource allocation scheme is proposed to exploit the multiuser diversity gain. The proposed algorithm involves adaptive subcarrier allocation, adaptive modulation and eigen beamforming and achieves significant improvement in overall system performance. Simulation results shows that the proposed algorithm offers a similar performance and a lower complexity than previous algorithms.
关键词：Multiuser MIMO OFDM; SVD; bit and power allocation
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