发明名称 |
Digital receiver having adaptive carrier recovery circuit |
摘要 |
A digital receiver, that may be used to receive VSB/QAM digital television signals, includes an adaptive fine carrier recovery circuit that compensates for deviations in the carrier frequency or phase. The carrier recovery circuit de-rotates a signal including phase errors. Estimations of phase errors are filtered using a filter whose gain and bandwidth are adjusted adaptively. This allows the carrier recovery circuit to track phase/frequency offset without introducing significant jitter. In one embodiment, the receiver includes a DFE, and the adaptive carrier recovery circuit mitigates instability that might be associated with the DFE.
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申请公布号 |
US2005157820(A1) |
申请公布日期 |
2005.07.21 |
申请号 |
US20040757536 |
申请日期 |
2004.01.15 |
申请人 |
WONGWIRAWAT SUPAT;TOUZNI AZZEDINE;HRYSZKO MARK;CASAS RAUL A.;YU YIWEN |
发明人 |
WONGWIRAWAT SUPAT;TOUZNI AZZEDINE;HRYSZKO MARK;CASAS RAUL A.;YU YIWEN |
分类号 |
H04L25/03;H04L27/00;H04L27/06;H04L27/14;H04L27/16;H04L27/22;(IPC1-7):H04L27/14 |
主分类号 |
H04L25/03 |
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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