Transmission system for digital signals, and transmitter and rec

Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation

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375279, 375259, 375260, 375261, 375298, 329304, 329308, 332103, H04L 2710, H04L 2718, H04L 2302, H04L 512

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active

058811079

ABSTRACT:
Transmission system with a transmitter (T), a receiver (R), and a filter combination (FI1, FI2; FQ1, FQ2) for transmitting a digital signal (sr), encoded in symbols (Si), from the transmitter (T) to the receiver (R) at any frequency position by quadrature modulation, wherein one of the two quadrature signal components (ki, kq) in the transmitter is delayed before the quadrature modulation by a time interval td, particularly by td=Tsymb/4. (FIG. 7)

REFERENCES:
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patent: 4546322 (1985-10-01), Crutcher
patent: 4759039 (1988-07-01), Debus, Jr. et al.
patent: 5369378 (1994-11-01), Kosaka et al.
patent: 5473280 (1995-12-01), Ohnishi et al.
patent: 5491457 (1996-02-01), Feher
IEEE transactions on Communications, pp. 275-283, vol.Com-30 (1982) Jan., No. 1, New York, USA.
Patent Abstracts of Japan, vol. 006, No. 160 (E-126), 21 Aug. 1982 & JP-A-57 079725 (Victor Co of Japan Ltd.), 19 May 1982.
European Patent Office Search Report 5 May 1996.
European Patent Office Search Report 19 Sep. 1996.

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