Modified Wiener Beamforming for Indoor Channel Improvement
作者单位：Inner Mongolia University
会议名称：《1998 International Conference on Communication Technology》
主办单位：China Institute of Communications (CIC);Chinese Institue of Electronics (CIE;IEEE COMSOC
会议日期：1998年
学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 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] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）]
关 键 词：array signal processing spread spectrum communication code division multiple access multiuser channels multipath channels Rician channels Rayleigh channels indoor radio ray tracing transient response direction-of-arrival estimation modified Wiener beamforming indoor channel improvement impulse response indoor channel spatial positions transceiver pair phase relationship multipath components time delays chip duration direct sequence code division multiple access DS-CDMA system maximum ratio combining multipath vectors Rice distributed multipath Rayleigh distributed multipath simulation results 3D ray tracing antenna array
摘 要：正The impulse response of an indoor channel varies with different environments and spatial positions of a transceiver pair as a function of the phase relationship among individual multipath components that have variety of time *** factor results in various fading especially in a chip duration of the Direct Sequence Code Division Multiple（DS-CDMA） *** solve this problem,a Modified Wiener Beamforming（MWB） has been proposed to co-phase the multipath components and then combine them by maximum ratio combining in a chip duration We derive formulas for MWB with a method to separate and estimate multipath vectors through each *** purpose is to isolate and recombine multipath components before they are added together as a phasor to produce ***,the fading of Rayleigh or Rice distributed multipath in a chip duration can be reduced to a *** results are presented by using a three-dimension ray tracing to support the proposed method.