Invention Grant
- Patent Title: Echo cancellation to alleviate timing varying channels
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Application No.: US16792740Application Date: 2020-02-17
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Publication No.: US10985800B2Publication Date: 2021-04-20
- Inventor: John T. Chapman , Hang Jin , Tong Liu
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Merchant & Gould P.C.
- Main IPC: H04B3/23
- IPC: H04B3/23 ; H04B10/25 ; H04B3/32

Abstract:
Echo cancellation to alleviate timing varying channels may be provided. First, a feedback signal corresponding to one of a plurality of downstream paths and a combination upstream signal comprising a combination of upstream signals from a plurality of upstream paths may be received. Next, a plurality of echo corrected signals may be created using the feedback signal, the combination upstream signal, and a plurality of echo cancelation coefficients that each respectively correspond to each one of the plurality of echo corrected signals and that are different from each other. Then a one of the plurality of echo cancelation coefficients that corresponds to a one of the plurality of echo corrected signals that provides a best echo cancelation performance as compared to other ones of the plurality of echo corrected signals may be selected to use.
Public/Granted literature
- US20200186192A1 ECHO CANCELLATION TO ALLEVIATE TIMING VARYING CHANNELS Public/Granted day:2020-06-11
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