发明名称 |
Method and apparatus for detecting signals, and transmitting apparatus and receiving apparatus using the same |
摘要 |
A start determining unit measures the strength of a signal which has been frequency-converted by an radiofrequency unit, and decides the start of a signal detection processing if the measured strength of a signal becomes greater than a predetermined threshold value. When the start of a signal detection processing is notified, an automatic gain control unit amplifies the signal which has been frequency-converted by the radiofrequency unit. A matched filter unit generates a correlation value for each sampling timing from signals outputted from an analog-to-digital unit. An infinite impulse response unit performs a statistical processing on the correlation values outputted from the matched filter unit, over a plurality of symbols. An averaging unit averages the correlation values on which the statistical processing has been performed. A coefficient unit multiplies the averaged correlation value by a coefficient. A decision unit determines that a signal to be received has been detected if, as a result of comparison by a comparison unit, the maximum value from a selector is large.
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申请公布号 |
US2005213645(A1) |
申请公布日期 |
2005.09.29 |
申请号 |
US20050086676 |
申请日期 |
2005.03.23 |
申请人 |
NISHIMURA NAOAKI;OKITA TOMOKAZU |
发明人 |
NISHIMURA NAOAKI;OKITA TOMOKAZU |
分类号 |
H04B1/707;H04L25/02;H04L27/06;(IPC1-7):H04B1/707 |
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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