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1. 发明申请

WO2004049612A1 A SYSTEM OF QS-CDMA WITH TWO-LEVEL SPREADING SCHEME AND LS SEQUENCES 审中-公开
标题翻译：具有两级扩展方案和LS序列的QS-CDMA系统
公开(公告)号：WO2004049612A1
公开(公告)日：2004-06-10
申请号：PCT/CN2002/000847
申请日：2002-11-26
申请人： LINKAIR COMMUNICATIONS,INC. , HAO, Li , FAN, Pingzhi , LI, Daoben
发明人： HAO, Li , FAN, Pingzhi , LI, Daoben
IPC分类号： H04J13/02
CPC分类号： H04J13/0077 , H04B2201/709709 , H04J13/18
摘要： The presented invention is to provide a system of QS-CDMA with two-level spreading scheme and LS sequences, the said system comprising: means for designating a user in the system to a user group according to the cell or the sector it belongs to; means for spreading the information signals both by the FL and SL spreaders; one-level despreading means coupled to the said means to simplify the receiver structure of the two-level spreading system; means for communicating information signals between users in the same user-group without MAI; means for communicating information signals between users in different user-group with suppressed MAI; means for employing the LS sequences as the spreading sequences so as to suppress the MAI. The presented invention can obtain satisfactory system error performance and system capacity.
摘要翻译：本发明提供一种具有两级扩频方案和LS序列的QS-CDMA系统，所述系统包括：根据所属小区或其所属扇区将系统中的用户指定给用户组的装置; 用于通过FL和SL撒布机传播信息信号的手段; 耦合到所述装置的一级解扩装置，以简化两级扩展系统的接收机结构; 用于在没有MAI的同一用户组中的用户之间传递信息信号的装置; 用于在具有抑制的MAI的不同用户组中的用户之间传递信息信号的装置; 用于采用LS序列作为扩展序列以便抑制MAI的装置。本发明可以获得令人满意的系统误差性能和系统容量。

2. 发明公开

EP1068682A1 ADAPTIVE INTERFERENCE-FREE SPREAD-SPECTRUM SYSTEM EMPLOYING BINARY CODE SEQUENCE SETS WITH ZERO CORRELATION ZONE PROPERTIES 有权
标题翻译：与二维码序列自适应无干扰扩频系统设置零相关区物业
公开(公告)号：EP1068682A1
公开(公告)日：2001-01-17
申请号：EP00901895.3
申请日：2000-01-26
申请人： TOYO COMMUNICATION EQUIPMENT CO. LTD. , Daiei Electronics Co., Ltd. , Fan, Pingzhi , Suehiro, Naoki , Kuroyanagi, Noriyoshi
发明人： FAN, Pingzhi , SUEHIRO, Naoki , KUROYANAGI, Noriyoshi7-1204, Sakuragaoka-danchi
IPC分类号： H04B7/26 , H04J13/04 , H03M13/00
CPC分类号： H04J13/14 , H04J13/0055
摘要： The invention relates to a direct sequence (DS) spread spectrum (SS) system consisting of modulator (1) and demodulator (2) where the spreading sequence (3) with zero correlation zone (ZCZ) properties, and the despreading consists of multiplying the received signal with the same spreading sequence (3), followed by a low pass filter (LPF), decoder and deinterleaver. The bit rate of spreading sequence for each user is normally much higher than the input encoded data bit rate, and therefore spreading the system spectrum. The spread spectrum system, especially the related DS CDMA system, works in an interference-free mode because of the employment of spreading sequences with ZCZ properties, and because of the width of the ZCZ can be adjusted according to transmission channel conditions.

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