Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-11-29
2005-11-29
Chin, Stephen (Department: 2634)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S371000
Reexamination Certificate
active
06970524
ABSTRACT:
The present invention provides methods and systems that generate symbol delay times. By receiving a communication signal using a plurality of antennas, a set of respective communication channels can be characterized. The characterized channels can be then used to determine sets of forward-time delays and time-reverse delays using a minimum-mean-square-error technique. By selecting the set of delays that can provide a lower mean-square-error in an equalizer, symbol estimation can be improved as compared to a system that only estimates delays in a single temporal direction.
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Li Ye
Winters Jack Harriman
Zeng Huaiyu
AT&T Corp.
Chin Stephen
Kim Kevin
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