Digital modulator

Details Digital modulator Digital modulator

2006-01-31

2006-01-31

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Transmitters

C375S229000

Reexamination Certificate

active

06993089

ABSTRACT:
The present invention relates to a digital modulator (DM) and to an associated method of modulation. The digital modulator (DM) comprises a clock frequency (Fclk) and is able to process a digital signal (S(TA)) comprising symbols (SYMB) sampled at a symbol frequency (Fsy). It is characterized by interpolation means (INT) able to interpolate a new sample (OUT) on the basis of interpolation parameters (δ, SIGN) and of signals (LS, TS, F0,F2) derived from the digital signal (S(TA)), interpolation parameters (δSIGN) being calculated as a function of a variable and real ratio (R) proportional to the symbol frequency (Fsy) over the clock frequency (Fclk).

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patent: 6563862 (2003-05-01), Knutson et al.
patent: 2753590 (1998-03-01), None

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