Signal regeneration

Details Signal regeneration Signal regeneration

2011-03-15

2011-03-15

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S325000, C375S214000, C375S322000

Reexamination Certificate

active

07907684

ABSTRACT:
Described herein is a method for signal regeneration, particularly, of the signal type transmitted by cellular base stations used in cellular telephone network systems. It is sometimes necessary to regenerate an accurate replica of a transmitted signal, by removing any errors that are present and/or compensate for any degradation that occur during transmission. The signal structure of signals transmitted within the cellular network systems is of a known form with predefined characteristics such as synchronization signals, error correction bursts or training sequences. The method includes determining frame timing of the received signal, identifying the locations of sequences within the signal from the frame timing, identifying the structure of the sequences, estimating phase shift values at the locations of the sequences, demodulating the symbol stream using the estimated phase shift values and the structure of the sequences, correcting symbol errors by various techniques and remodulating the symbol stream using the phase shift values to regenerate the signal that is substantially identical to the one that would have been received directly from the transmitter over a high quality land-line.

REFERENCES:
patent: 4525676 (1985-06-01), Atobe et al.
patent: 4947409 (1990-08-01), Raith et al.
patent: 5276706 (1994-01-01), Critchlow
patent: 5440265 (1995-08-01), Cochran et al.
patent: 5490173 (1996-02-01), Whikehart et al.
patent: 5583870 (1996-12-01), Delprat et al.
patent: 5852629 (1998-12-01), Iwamatsu
patent: 5974087 (1999-10-01), Nowara
patent: 6301470 (2001-10-01), Brunner et al.
patent: 6859491 (2005-02-01), Zhou
patent: 6885693 (2005-04-01), Burton
patent: 7035337 (2006-04-01), Sugiyama et al.
patent: 2001/0005406 (2001-06-01), Mege et al.
patent: 2003/0020653 (2003-01-01), Baugh et al.
patent: 2005/0147188 (2005-07-01), Liu
patent: 2008/0025266 (2008-01-01), Tynderfeldt et al.
patent: 0 893 703 (1998-01-01), None
patent: 1 501 215 (2005-01-01), None
patent: 2 291 300 (1996-01-01), None
patent: 2 311 697 (1997-10-01), None
patent: 52-136527 (1977-11-01), None
patent: WO 01/28272 (2001-04-01), None
patent: WO 03/094417 (2003-11-01), None

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