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1. 发明公开

KR1020020015668A 공간-시간 전송 다이버시티를 사용하여 이동 ＣＤＭＡ통신을 향상시키기 위한 방법 无效
标题翻译：使用空时传输多样性增强移动CDMA通信的方法
公开(公告)号：KR1020020015668A
公开(公告)日：2002-02-28
申请号：KR1020010050689
申请日：2001-08-22
申请人： 알카텔-루센트 유에스에이 인코포레이티드
发明人： 리우샹-치에 , 예흥-야오
IPC分类号： H04B7/02
CPC分类号： H04B7/0617 , H04B7/0669 , H04J13/0048 , H04J13/105 , H04L1/0618
摘要： PURPOSE: A method for enhancing a mobile CDMA(Code Division Multiple Access) communication using a space-time transmit diversity is provided to apply an STTD(Space-Time Transmit Diversity) scheme to angular and temporary transmit diversity to combine with a polarization interleaved switch beam to enhance the downlink WCDMA(Wideband Code Division Multiple Access) performance. CONSTITUTION: An operative gain of a switch beamformer antenna structure is transferred to a diversity gain by dividing a different angle of departure with different space-time spreading. An aiming angle of the switch beamformer antenna structure is mismatched and the phase of a pilot tone is distorted for reducing beamformer gain within a side angle spread. A spreading function is imparted to the communications signal using mutually orthogonal extended Walsh codes for even and odd bits of data.
摘要翻译：目的：提供一种用于增强使用时空发射分集的移动CDMA（码分多址）通信的方法，以将STTD（空时发射分集）方案应用于角度和临时发射分集，以与偏振交织开关波束增强下行WCDMA（宽带码分多址）性能。构成：通过用不同的时空扩展划分出不同的偏离角，将开关波束形成器天线结构的操作增益转移到分集增益。开关波束形成器天线结构的瞄准角不匹配，并且导频音的相位失真，以减小侧角扩展内的波束形成增益。使用相互正交的扩展沃尔什码对数据的偶数和奇数位赋予通信信号的扩展功能。

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