发明名称 |
Spread spectrum communication system |
摘要 |
A spread spectrum communication system wherein spreading codes for in-phase and quadrature components are composed by addition and subtraction and the received signal is multiplied by these composed codes for despreading. The communication system comprises a transmitter generating in-phase and quadrature components. The transmitter includes a spreading circuit for spreading the in-phase and quadrature components. The system further includes a receiver, a phase correction circuit for correcting the phase of despreaded components, a rake combiner for combining the components corrected by the phase correction circuit and a circuit for outputting a combined signal and a delay detection circuit for delaying detection of the combined signal. The receiver also comprises a provisional judgment portion for judging the phase of a pair of the in-phase and quadrature phase components. The phase correction circuit corrects the phase according to the phase judged by the provisional judgment portion.
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申请公布号 |
US6064690(A) |
申请公布日期 |
2000.05.16 |
申请号 |
US19980075861 |
申请日期 |
1998.05.12 |
申请人 |
YOZAN INC. |
发明人 |
ZHOU, CHANGMING;ZHOU, XUPING;SHOU, GUOLINAG |
分类号 |
H04B1/707;(IPC1-7):H04B1/69 |
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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