发明名称 |
Signal peak reduction circuit for non-constant envelope modulation signals |
摘要 |
Circuits for reducing the signal peaks in telecommunications signals are described. The circuits and methods are preferably adapted for reducing the peak to average power ratio of non-constant envelope modulation signals. In one example the circuit includes a band-limiting filter for limiting the bandwidth of a data bearing signal and a predictive filter for predicting peaks in the data bearing signal at the output of the pulse-shaping filter. The circuit also includes a clipping processor for generating a compensation signal in response to one or more signal peaks predicted by the predictive filter and a signal combining device for applying the compensation signal to the data bearing signal prior to amplification of the data bearing signal.
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申请公布号 |
US7376197(B2) |
申请公布日期 |
2008.05.20 |
申请号 |
US20030311872 |
申请日期 |
2003.06.24 |
申请人 |
PRESCIENT NETWORKS PTY LTD. |
发明人 |
BERANGI REZA;FAULKNER MICHAEL |
分类号 |
H04B15/00;H03K5/01;H04B1/04;H04J13/00;H04K1/02;H04L27/26 |
主分类号 |
H04B15/00 |
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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