发明名称 |
Spread code generation device for spread spectrum communication |
摘要 |
There is disclosed a spread code generation device for spread spectrum communication wherein an input data is modulated so as to be spread by a spread code having a first period. The device includes a long period PN code generator for generating a spread code having a second period longer than the first period, an initial state register for storing an initial phase of the spread code having the first period output from the long period PN code generator and for outputting the initial phase to the long period PN code generator, and a counter for receiving and computing the spread code output from the long period PN code generator and for outputting a trigger signal to the initial state register when the computed spread code reaches the first period. The initial state register outputs the initial phase to the long period PN code generation in response to the trigger signal from the counter. The long period PN code generator is reset to the initial phase when the initial phase is input to the long period PN code generator, whereby the spread code having the first period is output from the counter.
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申请公布号 |
US5631922(A) |
申请公布日期 |
1997.05.20 |
申请号 |
US19950426254 |
申请日期 |
1995.04.21 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
SEKINE, KIYOKI;KATO, TOSHIO;KAWABE, MANABU;SATO, TAKURO |
分类号 |
H04B1/707;H04J13/00;(IPC1-7):H04B15/00;H04K1/00;H04L27/30 |
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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