发明名称 |
Method and apparatus for generating filter tap weights and biases for signal dependent branch metric computation |
摘要 |
A method and apparatus are provided for determining a plurality of filter tap weights or biases (or both) for a noise predictive filter used to generate one or more signal dependent branch metrics. A filter tap weight or filter bias (or both) are adaptively accumulated for each possible data condition. The data conditions may comprise, for example, each possible data pattern for a given data dependency length. The appropriate accumulated filter tap weight or bias to update can be selected based on a data condition associated with the current received data. The filter tap weights associated with a delay 0 tap can be adapted for each filter condition except for a single normalizing condition, whose corresponding delay 0 tap remains fixed.
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申请公布号 |
US2005249273(A1) |
申请公布日期 |
2005.11.10 |
申请号 |
US20040839784 |
申请日期 |
2004.05.05 |
申请人 |
ASHLEY JONATHAN J;O'BRIEN KEENAN T;RAUSCHMAYER RICHARD;SANGHVI SUMEET;YE ANNE Q;ZHANG KAICHI |
发明人 |
ASHLEY JONATHAN J.;O'BRIEN KEENAN T.;RAUSCHMAYER RICHARD;SANGHVI SUMEET;YE ANNE Q.;ZHANG KAICHI |
分类号 |
G11B20/10;G11B20/14;H03H17/02;H03K5/159;(IPC1-7):H03K5/159 |
主分类号 |
G11B20/10 |
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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