Semi-blind Adaptive Beamforming for High-throughput Quadrature Amplitude Modulation Systems

作     者：Lajos Hanzo 

作者机构：School of Electronics and Computer ScienceUniversity of Southampton 

出 版 物：《International Journal of Automation and computing》 (国际自动化与计算杂志（英文版）)

年 卷 期：2010年第7卷第4期

页      面：565-570页

核心收录：

学科分类：11[军事学] 080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 1105[军事学-军队指挥学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 110503[军事学-军事通信学] 

主　　题：Beamforming minimum mean square error quadrature amplitude modulation semi-blind adaptive algorithm constant modulus algorithm soft decision-directed scheme. 

摘      要：A semi-blind adaptive beamforming scheme is proposed for wireless systems that employ high-throughput quadrature amplitude modulation signalling. A minimum number of training symbols, equal to the number of receiver antenna arrayts elements, are first utilised to provide a rough initial least squares estimate of the beamformer＇s weight vector. A concurrent constant modulus algorithm and soft decision-directed scheme is then applied to adapt the beamformer. This semi-blind adaptive beamforming scheme is capable of converging fast to the minimum mean-square-error beamforming solution, as demonstrated in our simulation study.