Coarse frequency offset estimation for digital multimedia...

Details Coarse frequency offset estimation for digital multimedia... Coarse frequency offset estimation for digital multimedia...

2011-08-23

2011-08-23

Ha, Dac (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S354000

Reexamination Certificate

active

08005173

ABSTRACT:
A method of estimating a coarse frequency offset of Digital Multimedia Broadcasting (DMB) transmission frames includes receiving the DMB transmission frames including a synchronization channel having a phase reference symbol, circularly shifting the phase reference symbol by applying a circular shift to the phase reference symbol, numerically correlating the circularly shifted phase reference symbol with a known correct phase reference symbol to obtain a highest peak and a side peaks of the numeric correlation, and computing a phase reference symbol angle based on a multiplication of the peak and a carrier spacing of the DMB transmission frames. The peak is determined when the circularly shifted phase reference symbol is equal to the known correct phase reference symbol. The peak and side peaks corresponding to the peak are operated in a range of a maximum value of the circular shift.

REFERENCES:
patent: 2004/0190438 (2004-09-01), Maltsev et al.
patent: 2005/0078649 (2005-04-01), Tehrani et al.
patent: 2008/0095249 (2008-04-01), Yoon et al.

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