发明名称 |
Method and apparatus for reproducing timing, and a demodulating apparatus that uses the method and apparatus for reproducing timing |
摘要 |
Two A/D converters sample received base band signal Sb by asynchronous sampling clock at double speed of symbol rate, and based on the sampled data series Ii, Qi. A transmission complex symbol frequency generator generates data series Ei, Di of transmission complex symbol frequency component. A correlation value calculator outputs correlation data series SMi as the correlation value of cosine wave data series Ci, and data series Ei, D1 of symbol frequency generated by a cosine wave generator, based on the asynchronous sampling clock CK. An inverse tangent calculator outputs a timing error &tgr; based on the correlation data series SMi.
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申请公布号 |
US2001031021(A1) |
申请公布日期 |
2001.10.18 |
申请号 |
US20010775595 |
申请日期 |
2001.02.05 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA, 2-3, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO, JAPAN |
发明人 |
FUJIMURA AKINORI;OKUBO SEIJI;KOJIMA TOSHIHARU |
分类号 |
H04L7/00;H04L7/02;H04L7/033;H04L27/22;(IPC1-7):H04L27/14 |
主分类号 |
H04L7/00 |
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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