Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Patent
1996-06-06
1999-05-11
Chan, Jason
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
375298, 332103, H04L23/02;5/12
Patent
active
059036095
ABSTRACT:
A transmission system for transmitting digital symbols by modulation according to a phase constellation includes a transmitter having a phase modulator and a frequency multiplier in cascade for producing a modulated signal having a desired transmission frequency. To prevent degradation of the bit error rate of such signal, the phase constellation at the input of the phase modulator has at least one additional phase state relative to the phase constellation at the output of the frequency multiplier. Advantageously, the number of phase states of the constellation at the input of the phase modulator is N times the number of phase states of the constellation at the output of the frequency multiplier, where N is the frequency multiplication factor.
REFERENCES:
patent: 3854094 (1974-12-01), Towler
patent: 4571549 (1986-02-01), Lods et al.
patent: 5233628 (1993-08-01), Rappaport et al.
patent: 5237292 (1993-08-01), Chethik
patent: 5438592 (1995-08-01), Boccuzzi
patent: 5438594 (1995-08-01), Podolak
patent: 5539588 (1996-07-01), Sawaguchi et al.
patent: 5633893 (1997-05-01), Lampe et al.
Deguelle Wilhelmus H. G.
Kool Leo
Tichelaar Johannes Y.
Chan Jason
Corrielus Jean B.
Rubin Steven S.
U.S. Philips Corporation
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