Invention Grant
- Patent Title: Method and system for estimating frequency offsets
- Patent Title (中): 估计频率偏移的方法和系统
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Application No.: US11239350Application Date: 2005-09-30
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Publication No.: US07643602B2Publication Date: 2010-01-05
- Inventor: Timothy R. Miller , John W. McCorkle
- Applicant: Timothy R. Miller , John W. McCorkle
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Main IPC: H03D3/24
- IPC: H03D3/24

Abstract:
A method is provided for estimating a frequency offset value. This method includes: receiving a signal from the transmitting device at the receiving device, the received signal having a transmitter frequency (510); generating a local signal at the receiving device, the local signal having a starting frequency (520); comparing a received signal phase and a local signal phase to determine an adjusted error signal representing a phase difference between the received signal and the local signal (530); adjusting a current frequency of the local signal from the starting frequency to the transmitting frequency over a time period (540); integrating the adjusted error signal over the time period to generate an integrated error signal (550); and filtering the integrated error signal to generate a frequency difference estimate indicative of the frequency difference between the transmitter frequency and the starting frequency (560).
Public/Granted literature
- US20070076822A1 Method and system for estimating frequency offsets Public/Granted day:2007-04-05
Information query
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