GFSK receiver

Details GFSK receiver GFSK receiver

2007-07-03

2007-07-03

Tran, Khanh (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S272000, C329S300000

Reexamination Certificate

active

10621056

ABSTRACT:
A method for synchronizing a receiver to a stream of transmitted symbols that includes a known synchronization word. The method includes receiving a signal in which the symbols, including the synchronization word, are encoded by frequency shift keying. The signal is sampled and digitized to generate a sequence of input samples. For each of the input samples, a phase difference is determined relative to a preceding input sample in the sequence, thereby generating a sequence of differential samples corresponding respectively to the input samples. The differential samples are then matched to the synchronization word.

REFERENCES:
patent: 5276706 (1994-01-01), Critchlow
patent: 5581582 (1996-12-01), Choi
patent: 5625573 (1997-04-01), Kim
patent: 5732111 (1998-03-01), Walley
patent: 5909471 (1999-06-01), Yun
patent: 6038270 (2000-03-01), Watanabe et al.
patent: 6282500 (2001-08-01), Agrawal et al.
patent: 6304620 (2001-10-01), Rouphael
patent: 6873666 (2005-03-01), Chen
PCT Written Opinion, mailed Sep. 23, 2003, PCT Application Serial No. PCT/US02/13647.

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