Invention Grant
- Patent Title: Digital radio mondiale receiver integer carrier frequency offset estimation
- Patent Title (中): 数字无线电接收机整数载波频偏估计
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Application No.: US12079951Application Date: 2008-03-28
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Publication No.: US08270503B2Publication Date: 2012-09-18
- Inventor: Yan Liu
- Applicant: Yan Liu
- Applicant Address: CN Shenzhen
- Assignee: Shenzhen STS Microelectronics Co., Ltd.
- Current Assignee: Shenzhen STS Microelectronics Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Priority: CN200710089046 20070329
- Main IPC: H04L27/28
- IPC: H04L27/28

Abstract:
A method and apparatus for estimating a carrier frequency offset (CFO) in a Digital Radio Mondiale receiver is provided. Orthogonal frequency-division multiplexing (OFDM) demodulation is performed on a received DRM signal to produce OFDM symbols. A cell characteristic in corresponding cells in the OFDM symbols is compared and a carrier index of a frequency pilot cell in the cells is identified based upon the compared cell characteristic. The CFO is estimated based on the identified carrier index of the frequency pilot cell. The ratio of values of the cell characteristic in corresponding cells may be calculated and the frequency pilot cell identified by identifying cells for which the cell characteristic is most nearly equal. The CFO may be estimated by comparing the identified carrier index with an expected carrier index of a frequency pilot cell.
Public/Granted literature
- US20080279314A1 Digital Radio Mondiale receiver integer carrier frequency offset estimation Public/Granted day:2008-11-13
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