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1.发明公开DEVICE AND METHOD FOR GENERATING SPREADING CODE AND SPREADING CHANNEL SIGNALS USING SPREADING CODE IN CDMA COMMUNICATION SYSTEM 有权装置和方法用于产生扩展码和信道信号使用扩展的扩展码IN A CDMA传输系统
公开(公告)号：EP1048138A2
公开(公告)日：2000-11-02
申请号：EP99969881.4
申请日：1999-09-29
发明人： KIM, Je-Woo , WOO, Jung-Hyo , PARK, Chang-Soo , AHN, Jae-Min
CPC分类号： H04J13/0022 , H04J13/10 , H04J13/12
摘要： A spreading code generating device for a Code Division Multiple Access (CDMA) communication system is disclosed. The device comprises a PN (Pseudo-random Noise) code sequence generator for generating PNi and PNq sequences; an orthogonal code generator for generating first and second orthogonal codes (OC1, OC2) which perform Differential Phase Shift Keying (DPSK) state transitions at intervals of at least two chips; and a spreading code generator for generating spreading codes Ci and Cq by mixing the PNi and PNq code sequences with the first and second orthogonal codes (OC1, OC2) such that a present phase of the spreading codes Ci and Cq alternately makes Quadrature Phase Shift Keying (QPSK) and DPSK state transitions with respect to a previous phase of the spreading codes Ci and Cq.
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2.发明授权DEVICE AND METHOD FOR GENERATING SPREADING CODE AND SPREADING CHANNEL SIGNALS USING SPREADING CODE IN CDMA COMMUNICATION SYSTEM 有权装置和方法用于产生扩展码和信道信号使用扩展的扩展码IN A CDMA传输系统
公开(公告)号：EP1048138B1
公开(公告)日：2007-11-14
申请号：EP99969881.4
申请日：1999-09-29
发明人： KIM, Je-Woo , WOO, Jung-Hyo , PARK, Chang-Soo , AHN, Jae-Min
CPC分类号： H04J13/0022 , H04J13/10 , H04J13/12
摘要： A spreading code generating device for a Code Division Multiple Access (CDMA) communication system is disclosed. The device comprises a PN (Pseudo-random Noise) code sequence generator for generating PNi and PNq sequences; an orthogonal code generator for generating first and second orthogonal codes (OC1, OC2) which perform Differential Phase Shift Keying (DPSK) state transitions at intervals of at least two chips; and a spreading code generator for generating spreading codes Ci and Cq by mixing the PNi and PNq code sequences with the first and second orthogonal codes (OC1, OC2) such that a present phase of the spreading codes Ci and Cq alternately makes Quadrature Phase Shift Keying (QPSK) and DPSK state transitions with respect to a previous phase of the spreading codes Ci and Cq.
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