Pulse or digital communications – Synchronizers – Synchronizing the sampling time of digital data
Reexamination Certificate
2006-09-12
2006-09-12
Corrielus, Jean B. (Department: 2611)
Pulse or digital communications
Synchronizers
Synchronizing the sampling time of digital data
C375S346000
Reexamination Certificate
active
07106818
ABSTRACT:
The present invention provides a method for generating a timing offset signal applied to a sampling device for recovering a symbol stream from a broadcast signal by characterizing the dispersion of received signal. Preferably, the method includes steps for generating a derivative signal approximating the derivative of the symbol stream, producing a constant representative of an expected symbol stream, and multiplying the derivative signal, the constant, and a signal one of corresponding to and approximating the symbol stream to thereby generate the timing offset signal. A dispersion characterizing receiver and a digital signal processor employed therein are also described.
REFERENCES:
patent: 5809009 (1998-09-01), Matsuoka et al.
Jablon, Neil K. “Joint Blind Equalization, Carrier Recovery, and Timing Recovery for High-Order QAM Signal Constellations”, IEEE Transactions on Signal Processing, vol. 40. No. 6, Jun. 1992, pp. 1383-1398.
“Passband Timing Recovery in an All-Digital Modem Receiver”, by D. Godard, IEEE Trans. Communications, vol. 26, No. 5 (1978) , pp. 517-523.
“Joint Clock Recovery and Baseband Combining for the Diversity Radio Channel”, by F. Guglielmi et al., IEEE Trans. Communications, vol. 44, (1996) , pp. 114-117.
“Lectures on Adaptive Parameter Estimation”, by C. Richard Johnson, Jr. Cornell University, Prentice Hall 1988, Lecture 3.
Balakrishnan Jaiganesh
Chung Wonzoo
Johnson, Jr. C. Richard
Martin Richard
Sethares William A
Corrielus Jean B.
Koninkijke Philips Electronics N.V.
Liberchuk Larry
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