Echo cancellation through auxiliary-vector filtering

Details Echo cancellation through auxiliary-vector filtering Echo cancellation through auxiliary-vector filtering

2005-09-13

2005-09-13

Tieu, Binh (Department: 2643)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C379S406010, C379S406010, C379S406010, C379S406160

Reexamination Certificate

active

06944290

ABSTRACT:
A digit signal processing system may include a near end and a far end connected by a pair of signal transmission paths. A signal processing may be located at the near end through which signal commands are transmitted to the far end. A signal transducing device may be located at the far end to receive the signal commands and to transmit to the near end signals indicating the state of the signal transducing device. A signal canceller may be operatively associated with the signal processor to subtract undesired signals from the received signals. The signal canceller may employ Auxiliary-Vector filtering.

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D.A. Pados, et al., “Joint Space-Time Auxiliary-Vector Filtering for DS/CDMA Systems with Antenna Arrays,” IEEE Transactions on Communications, vol. 47, Issue 9, Sep. 1999, pp. 1406-1415.

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