Invention Grant
US07865202B2 Method and system for I/Q branch equalization in OFDM systems
有权
OFDM系统中I / Q分支均衡的方法和系统
- Patent Title: Method and system for I/Q branch equalization in OFDM systems
- Patent Title (中): OFDM系统中I / Q分支均衡的方法和系统
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Application No.: US12251774Application Date: 2008-10-15
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Publication No.: US07865202B2Publication Date: 2011-01-04
- Inventor: Francis Swarts , Mark Kent , Theodoros Georgantas
- Applicant: Francis Swarts , Mark Kent , Theodoros Georgantas
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McAndrews, Held & Malloy, Ltd.
- Main IPC: H04B15/00
- IPC: H04B15/00

Abstract:
Aspects of a method and system for I/Q branch equalization in OFDM systems may include determining a transfer function mismatch between an in-phase processing branch, and/or a quadrature processing branch in an OFDM receiver. The determined transfer function mismatch may be compensated for, by applying equalization after a fast Fourier transform (FFT) in an in-phase processing branch and/or a quadrature processing branch. The OFDM system may be compliant with, for example, UMTS LTE (EUTRA), WiMAX (IEEE 802.16), DVB-H, and WLAN (IEEE 802.11). A transfer function may be measured for an in-phase branch filter and/or quadrature branch filter to determine the transfer function mismatch. The transfer function mismatch may be compensated for, in frequency domain by the equalizer. The transfer function mismatch may comprise magnitude and/or phase response mismatch, wherein the magnitude and/or phase response mismatch may be a function of frequency.
Public/Granted literature
- US20090213724A1 METHOD AND SYSTEM FOR I/Q BRANCH EQUALIZATION IN OFDM SYSTEMS Public/Granted day:2009-08-27
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