发明授权
- 专利标题: Cascade echo canceler arrangement
- 专利标题(中): 级联回波消除器布置
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申请号: US22708申请日: 1998-02-12
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公开(公告)号: US6009083A公开(公告)日: 1999-12-28
- 发明人: Richard Thomas Flanagan , Jean-Jacques Werner
- 申请人: Richard Thomas Flanagan , Jean-Jacques Werner
- 申请人地址: NJ Murray Hill
- 专利权人: Lucent Technologies, Inc.
- 当前专利权人: Lucent Technologies, Inc.
- 当前专利权人地址: NJ Murray Hill
- 主分类号: H04B3/23
- IPC分类号: H04B3/23
摘要:
The problem of tracking rapid changes in the echo signals associated with modems is eliminated by using an echo canceler consisting of cascaded adaptive filters. Each filter in the structure contributes to the modeling of the overall echo path impulse response, with a longer filter providing the ability to model long echo path impulse responses and a shorter filter providing the ability to track changes in the echo path impulse response over time.
公开/授权文献
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