Method and apparatus for estimating/removing echo signal...

Details Method and apparatus for estimating/removing echo signal... Method and apparatus for estimating/removing echo signal...

2009-02-24

2011-11-01

Nguyen, Hai L (Department: 2816)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S007000, C455S024000

Reexamination Certificate

active

08050621

ABSTRACT:
A method and an apparatus are provided for estimating and removing interference of a signal at a wireless repeater operating in a multi-carrier system. In the method, a current echo channel linear prediction coefficient, which represents a coefficient between a current train signal section and a previous train signal section, is estimated using a current echo channel coefficient estimated in the current train signal section and a previous echo channel coefficient generated in the previous train signal section. A next echo channel coefficient is estimated using the current echo channel coefficient, the previous echo channel coefficient, and the current echo channel linear prediction coefficient. An echo channel coefficient outside a train signal section is estimated using the current echo channel coefficient and the next echo channel coefficient.

REFERENCES:
patent: 6411649 (2002-06-01), Arslan et al.
patent: 7596352 (2009-09-01), Ding et al.
patent: 7844216 (2010-11-01), Cleveland et al.
patent: 7894768 (2011-02-01), Ding et al.
patent: 1020040075160 (2004-08-01), None
patent: 1020070106363 (2007-11-01), None

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