Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2011-06-14
2011-06-14
Nguyen, Duc (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C455S278100, C455S063100, C375S346000, C375S350000
Reexamination Certificate
active
07962113
ABSTRACT:
In one embodiment, a method provides multiple-tone wideband I/Q mismatch calibration. A plurality of calibration frequencies is selected within a channel. A calibration tone is applied to the channel at each of the plurality of calibration frequencies. An I/Q mismatch is estimated at each of the plurality of calibration frequencies. An n-th order filter is constructed to compensate received signals relative to the estimated I/Q mismatch related to each calibration frequency.
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Gao Li
Johnson Richard A
Nohrden James M.
Chow Charles
Nguyen Duc
Polansky Paul J.
Polansky & Associates, P.L.L.C.
Reed R. Michael
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