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| An Optimal Adaptive Subcarrier Allocation for Multiuser MIMO-OFDM Transmission in Partial-channel Response Environment |
| Guo Lei; Zhu Guang-xi |
Department of Electronics and Information Engineering,
Huazhong University of Science & Technology, Wuhan 430074, China |
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Abstract In this paper, an optimal adaptive multiuser subcarrier allocation with partial-channel response is proposed. This algorithm reduces computational complexity without apparent performance attenuation based on multiusers’ feedback information and dynamic subcarrier allocation method by considering partial-channel response caused by delayed feedback information or estimate error. Simulation results show that the proposed method decreases the impact of partial-channel response and computational complexity obviously with gaining an approximative performance compared with traditional subcarrier allocation method at the same time.
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Received: 20 December 2006
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2008, Vol. 30 
