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基于统计信道信息的MIMO OFDM系统发射功率最小化研究

Study on the Power Minimization of the MIMO OFDM System Based on the Statistical Channel Information
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摘要 提出了一种利用MIMO的统计信道信息进行自适应调制的方法,并进行了仿真。该方法采用Alamouti空时编码、自适应波束成形和自适应比特和功率分配,在保证误码率和恒定传输速率的条件下使发射功率最小。仿真结果显示,该方法显著降低了系统的发射功率。 An adaptive modulation algorithm using the statistical channel information of the MIMO OFDM system is proposed and simulated. The aim is to minimize the transmit power under the constraint of the fixed transmit rate and the prescribed error performance, in which Alamouti space-time cede and adaptive beamformer are used. Simulation results show that the transmit power can be reduced greatly.
作者 张文强 周志杰 郑翔
机构地区 解放军理工大学通信工程学院
出处 《信号处理》 CSCD 北大核心 2008年第1期100-104,共5页 Journal of Signal Processing
关键词 自适应调制 波束成形 部分信道信息 MIMO OFDM 正交幅度调制 adaptive modulation beamforming partial CSI MIMO OFDM QAM
分类号 TN929.5 [电子电信—通信与信息系统] TN929.53 [电子电信—通信与信息系统]
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参考文献10

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