| 多天线系统特征波束成形技术中的功率分配算法 |
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| 引用本文： | 刘林南,匡镜明,费泽松.多天线系统特征波束成形技术中的功率分配算法[J].北京理工大学学报,2007,27(11):1001-1004. |
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| 作者姓名： | 刘林南 匡镜明 费泽松 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 介绍了基于特征波束成形的多天线传输技术.针对特征波束成形技术与两种典型的多天线技术(空时编码和分层空时)相结合的系统,从提高系统传输性能出发,分别推导了在独立同分布衰落信道中,发射端已知信道相关矩阵信息的情况下,特征波束成形的功率分配算法.仿真和分析结果表明,在发射端已知信道信息有限的情况下,作者提出的方法能显著改善多天线传输系统的性能,并且在发射天线间存在相关性时,仍能改善系统的性能.
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| 关 键 词： | 无线通信 多天线技术 特征波束成形 功率分配 |
| 文章编号： | 1001-0645（2007）11-1001.04 |
| 修稿时间： | 2007-04-05 |
Power Allocation Algorithm for Eigen-Beamforming in the Multi-Antenna System |
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| LIU Lin-nan,KUANG Jing-ming and FEI Ze-song.Power Allocation Algorithm for Eigen-Beamforming in the Multi-Antenna System[J].Journal of Beijing Institute of Technology(Natural Science Edition),2007,27(11):1001-1004. |
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| Authors: | LIU Lin-nan KUANG Jing-ming and FEI Ze-song |
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| Institution: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beljing 100081, China |
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| Abstract: | Eigen-beamforming technique is introduced in two typical multi-antenna systems space-time block coding and vertical bell-labs layered space time.When the channel covariance information is known by the transmitter,optimal power allocation algorithm for eigen-beamforming is proposed based on minimizing the transmission errors.Also,it is indicated that the algorithm can be simplified when the channel is independent-identically distributed channel.By simulation and analysis,eigen-beamforming can greatly improve the performance of multi-antenna system when this power allocation algorithm is adopted and the performance improvement still exists when there is correlation between transmit antennas. |
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| Keywords: | wireless communication multi-antenna system eigen-beamforming power allocation |
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