Correction of alternating I/Q imbalance and frequency offset impairments
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United States of America Patent
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Sep 10, 2013
Grant Date -
Aug 11, 2011
app pub date -
Feb 9, 2010
filing date -
Feb 9, 2010
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Abstract
A method for communication includes receiving a signal, which carries data bits and is distorted by multiple impairments including one or more frequency offsets and one or more In-phase/Quadrature (I/Q) imbalances. A corrected signal is produced by applying to the received signal a sequence of corrections to compensate for the impairments. The sequence includes a first and a third correction of one correction type and a second correction of another correction type intervening between the first and third corrections in the sequence, the correction types consisting of frequency offset corrections and I/Q imbalance corrections. The data bits are extracted from the corrected signal.
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