发明名称 |
Apparatus for detecting correlation, spectrum despread apparatus and receiver having the same, and method for detecting correlation |
摘要 |
An apparatus is provided for detecting a correlation of samples with a spread code comprising: an L-chip accumulator which inputs the samples to generate and output an intermediate correlation signal; M memories, each of which stores LxM samples of the intermediate correlation signal; an adder which has input terminals as many as M and inputs from each of the input terminals the intermediate correlation signal which is outputted from the L-chip accumulator or the intermediate correlation signal which is outputted from a corresponding memory among the memories; and a controller which supplies the intermediate correlation signal outputted from the L-chip accumulator to the memories as many as M and to the M input terminals of the adder in rotation with a unit of LxN samples, and reads, and supplies to each of the input terminals of the adder, the intermediate correlation signal which has been stored in each of the memories M-1 times; wherein an output of the adder is outputted as an correlation signal outputted from the apparatus.
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申请公布号 |
US6891884(B1) |
申请公布日期 |
2005.05.10 |
申请号 |
US20000512384 |
申请日期 |
2000.02.25 |
申请人 |
NEC ELECTRONICS CORPORATION |
发明人 |
OHNISHI OSAMU |
分类号 |
H04B1/69;H04B1/707;H04B1/713;H04J13/00;H04L7/00;(IPC1-7):H04B1/69 |
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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