IQ imbalance correction

Details IQ imbalance correction IQ imbalance correction

2007-01-23

2007-01-23

Chin, Stephen (Department: 2634)

Pulse or digital communications

Equalizers

C333S018000, C333S02800T, C342S194000, C375S147000, C375S296000, C375S324000, C375S346000, C708S300000, C708S819000

Reexamination Certificate

active

10038860

ABSTRACT:
An in-phase and guadrature (IQ) imbalance error-correction method includes estimating, on the basis of a constellation error in a received orthogonal frequency division multiplexing (OFDM) signal, an extent of an I/Q imbalance error, caused by direct IQ conversion of the received OFDM signal. On the basis of that extent, an equalizing transformation that reduces that error is estimated.

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patent: 2003/0095589 (2003-05-01), Jeong
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