Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Patent
1993-07-02
1995-05-16
Chin, Stephen
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
375267, 371 43, 370 11, 370 50, H04J 900
Patent
active
054168015
ABSTRACT:
Digital signal transmission system which operates by coded modulation of a constellation, the system comprising an encoder (5) which includes a modulator (13) installed at a transmitting station, and a decoder (105) which includes a demodulator (113) installed at a receiving station. A multistage channel encoder (12) carries out a concatenation of internal and external codes to blocks and divides the coding over various partitioning levels of the constellation. The coded symbol blocks are subjected to the work of a frequency-division interleaver (37), the modulator (13) operating according to an orthogonal carrier frequency-division multiplexing technique. The decoder (105) includes circuitry to carry out reverse operations to those carried out for the coding.
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Brajal Americo
Chouly Antoine
Chin Stephen
Marion Michael E.
May Timothy J.
U.S. Philips Corporation
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