Multi-channel digital modulator

Details Multi-channel digital modulator Multi-channel digital modulator

H - Electricity

04

J

363/15

H04J 3/02 (2006.01) H04L 5/02 (2006.01) H04L 27/00 (2006.01)

Patent

CA 1048177

Abstract of the disclosure In a modulator of the type including a memory in which coded binary words representative of samples of a cycle of 3 sinusoidal signal are stored, which coded words are used to synthesize the modulated signel, the bits of each input digital signal Si are grouped in groups of Pi bits (Pi? 1) and the sampling of the groups is so performed that several samples of each group appear in the multiplexed signal resulting from the sampling.Each sample of each group causes the reading of a coded word. This process gives a wide range of possibilities as concerns the transmission speeds of the input channels and the choice of the carrier frequency and of the number of modulation levels for each modulated signal.

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