Invention Grant
US09100226B2 Robust sensing of DVB-T/H transmissions in the presence of frequency offsets
有权
在存在频率偏移的情况下对DVB-T / H传输的鲁棒感应
- Patent Title: Robust sensing of DVB-T/H transmissions in the presence of frequency offsets
- Patent Title (中): 在存在频率偏移的情况下对DVB-T / H传输的鲁棒感应
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Application No.: US13319820Application Date: 2010-04-23
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Publication No.: US09100226B2Publication Date: 2015-08-04
- Inventor: Vasanth Gaddam
- Applicant: Vasanth Gaddam
- Applicant Address: NL Eindhoven
- Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee Address: NL Eindhoven
- Agent Larry Liberchuk
- International Application: PCT/IB2010/051798 WO 20100423
- International Announcement: WO2010/131139 WO 20101118
- Main IPC: H04L27/12
- IPC: H04L27/12 ; H04L27/00 ; H04L27/26

Abstract:
A method and system is provided for detecting the presence of a DVB (digital video broadcasting) transmission with frequency offsets. The method includes receiving an RF (radio frequency) signal in a selected channel; creating samples from the received RF signal; estimating a frequency offset of the samples; correcting the samples with the estimated frequency offset; correlating the corrected samples with a reference signal; and comparing a correlation result with a threshold value. The frequency offset estimation includes selecting a set of three or more pilots that are boosted continual pilots transmitted at fixed sub-carrier locations in all symbols; transforming the received samples to the frequency domain; determining locations of maxima in the transformed samples, the maxima corresponding to the pilots in the set; and comparing the determined locations with the expected pilot locations in the set.
Public/Granted literature
- US20120050547A1 ROBUST SENSING OF DVB-T/H TRANSMISSIONS IN THE PRESENCE OF FREQUENCY OFFSETS Public/Granted day:2012-03-01
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