Invention Grant
- Patent Title: Echo cancellation to alleviate timing varying channels
-
Application No.: US16012504Application Date: 2018-06-19
-
Publication No.: US10567036B2Publication Date: 2020-02-18
- 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 ; H04B3/32 ; H04B10/25

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
- US20190386701A1 ECHO CANCELLATION TO ALLEVIATE TIMING VARYING CHANNELS Public/Granted day:2019-12-19
Information query