发明名称 |
Non linear adaptive filters |
摘要 |
A non-linear adaptive filter is described having a linear filter connected in parallel with a non-linear filter. The linear filter provides fast adaption until it has modelled the linear contribution of each coefficient. Thereafter the non-linear filter continues to adapt until the error signal has been reduced to an acceptable level. In a preferred embodiment a plurality of unit delay devices provide taps to sub-processing units each of which is arranged to be adapted according to a linear algorithm during an initial part of a training period, and to a non-linear algorithm after said initial part. The filter has particular use in echo cancellers for data modems.
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申请公布号 |
US4792915(A) |
申请公布日期 |
1988.12.20 |
申请号 |
US19860861412 |
申请日期 |
1986.05.09 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
ADAMS, PETER F.;SMITH, MARK J.;CARPENTER, ROBERT B. P. |
分类号 |
H03H17/00;H03H21/00;H04B3/23;(IPC1-7):G06F15/31 |
主分类号 |
H03H17/00 |
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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