Invention Grant
- Patent Title: Data aided detection of spectrum inversion
- Patent Title (中): 频谱反演的数据辅助检测
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Application No.: US11873923Application Date: 2007-10-17
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Publication No.: US08306156B2Publication Date: 2012-11-06
- Inventor: Li Zhang
- Applicant: Li Zhang
- Applicant Address: KY Grand Caymand
- Assignee: Montage Technology Group Limited
- Current Assignee: Montage Technology Group Limited
- Current Assignee Address: KY Grand Caymand
- Agency: The Law Office of Ivy Mei
- Agent Ivy Mei
- Main IPC: H03D3/22
- IPC: H03D3/22

Abstract:
Methods and apparatuses to detect spectrum inversion based on estimated frequency offset in carrier signal. In one embodiment, a receiver includes an I/Q swap module to output an in-phase component and a quadrature-phase component; a frequency offset estimator to determine an offset in carry frequency of the in-phase and quadrature-phase components; and a spectrum inversion detector coupled to the frequency offset estimator and the I/Q swap module. The spectrum inversion detector is configured to signal the I/Q swap module to swap the in-phase component and the quadrature-phase component when an absolute value of the offset in carry frequency is above a predetermined threshold.
Public/Granted literature
- US20090103633A1 DATA AIDED DETECTION OF SPECTRUM INVERSION Public/Granted day:2009-04-23
Information query
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