多用户MIMO-OFDM系统中基于迫零波束成型的自适应资源分配算法 |
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作者姓名: | 舒锦 卫国 |
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作者单位: | 中国科学技术大学无线网络通信安徽省重点实验室, 合肥?230027 |
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基金项目: | 国家重点基础研究发展计划(973计划)项目(2007CB310602)资助 |
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摘 要: | 针对多用户环境下的多天线正交频分复用下行系统,提出了2种有效的基于迫零波束成型的自适应资源分配算法.所提算法在保证每个用户的速率要求的情况下,通过自适应的功率、子载波和比特分配,最小化系统的发送功率.仿真结果表明,提出的2种次优的分配算法在满足用户的速率要求下能达到很好的系统性能.
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关 键 词: | 多天线正交频分复用 自适应资源分配 发送功率 |
收稿时间: | 2008-05-07 |
修稿时间: | 2008-11-04 |
Adaptive resource allocation algorithm for multiuser MIMO-OFDM systems with zero-forcing beamformer |
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Authors: | SHU Jin WEI Guo |
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Institution: | Wireless Information Network Laboratory, University of Science and Technology of China, Hefei 230027, China |
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Abstract: | Two effective allocation schemes are proposed for Multiuser MIMO-OFDM systems with zero-forcing beamforming. Through adaptive power,subacarrier and bit allocation, our objective is to minimize the total transmit power while satisfying the target data rates of all users. The numerical results show that the two proposed sub-optimal methods can achieve good performance while satisfying the rate demand of users. |
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Keywords: | MIMO-OFDM adaptive resource allocation transmit power |
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