Title:
CORRECTION OF QUADRATURE MISMATCH
Document Type and Number:
WIPO Patent Application WO2007045843
Kind Code:
A8
Abstract:
A method for analog front-end impairment compensation in OFDM Multi- Carrier Systems based on adaptive blind-source-separation techniques, which may be used to improve the IQ phase and gain mismatches in zero-IF type as well as low-IF type receivers. The method comprises resolving a received signal into its component carrier signals and demixing the I and Q channels of each resolved carrier in a demixing stage. In the demixing, signal components of a resolved carrier are input to first and second cross coupled adaptive filters, whose coefficients are updated by the outputs of the demixing stage.
Inventors:
KALE IZZET (GB)
MORLING RICHARD CHARLES SPICER (GB)
CETIN EDIZ (GB)
MORLING RICHARD CHARLES SPICER (GB)
CETIN EDIZ (GB)
Application Number:
PCT/GB2006/003837
Publication Date:
August 23, 2007
Filing Date:
October 17, 2006
Export Citation:
Assignee:
UNIV WESTMINSTER (GB)
KALE IZZET (GB)
MORLING RICHARD CHARLES SPICER (GB)
CETIN EDIZ (GB)
KALE IZZET (GB)
MORLING RICHARD CHARLES SPICER (GB)
CETIN EDIZ (GB)
International Classes:
H04L27/26; H04L27/00
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