发明名称 |
CDMA COMMUNICATION APPARATUS AND CDMA COMMUNICATION METHOD |
摘要 |
A CDMA communication apparatus wherein resistance against phase noise can be improved without degradation of transmission efficiency. In this apparatus, spread parts (110-1 to 110-n) spread the respective ones of transmission signals (1 to n). Coordinate transformation parts (120-1 to 120-n) interchange the in-phase and quadrature components of the signals as spread for each chip. A multiplexing part (130) multiplexes the n signals as coordinate transformed with known signals used for transmission path compensation. Coordinate transformation parts (250-1 to 250-n) interchange, for each chip, the in-phase and quadrature components of serial signals as outputted from a P/S conversion part (240) such that the coordinate transformations of the coordinate transformation parts (120-1 to 120-n) at the transmission end are reversed. Despread parts (260-1 to 260-n) despread the n signals as coordinate transformed by the coordinate transformation parts (250-1 to 250-n) to output reception signals (1 to n).
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申请公布号 |
EP1753150(A1) |
申请公布日期 |
2007.02.14 |
申请号 |
EP20040822177 |
申请日期 |
2004.11.19 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
FUJITA, SHOICHI;NIHEI, TAKAO |
分类号 |
H04B1/707;H04J11/00;H04J13/10;H04L5/02;H04L27/26 |
主分类号 |
H04B1/707 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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