发明名称 |
Device and method for generating spreading code and spreading channel signals using spreading code in CDMA communication system |
摘要 |
A spreading code generating device for a Code Division Multiple Access (CDMA) communication system. The device comprises a PN (Pseudorandom Noise) code sequence generator for generating PNi and PNq sequences; an orthogonal code generator for generating first and second orthogonal codes 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 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. |
申请公布号 |
AU6008599(A) |
申请公布日期 |
2000.04.17 |
申请号 |
AU19990060085 |
申请日期 |
1999.09.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JE-WOO KIM;JUNG-HYO WOO;CHANG-SOO PARK;JAE-MIN AHN |
分类号 |
H04B1/69;H04B1/707;H04J11/00;H04J13/00;H04J13/10;H04J13/12 |
主分类号 |
H04B1/69 |
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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