发明名称 |
Despreading circuit |
摘要 |
A despreading circuit which can reduce a circuit scale and power consumption is described. The circuit includes an A/D converter which converts a CDMA modulated analog signal to a digital signal of N bits, and a searcher which defects a synchronization phase from high-order small bits of the N bits and outputs synchronozation phase information to a control circuit. The control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information. The sliding correlator despreads the N bit digital signal outputted by the A/D converter and outputs the resulting correlation output as a despreading signal.
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申请公布号 |
US6636557(B2) |
申请公布日期 |
2003.10.21 |
申请号 |
US20010947344 |
申请日期 |
2001.09.07 |
申请人 |
KOKUSAI ELECTRIC CO., LTD. |
发明人 |
IMAIZUMI ICHIRO;MIYATANI TETSUHIKO;ABE SHUNJI;URABE KENZO;KATO HITOSHI |
分类号 |
H04B1/707;H04L7/00;(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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