Transmission system in which either an in-phase or quadrature co

Details Transmission system in which either an in-phase or quadrature co Transmission system in which either an in-phase or quadrature co

1997-03-11

1999-07-13

Grimm, Siegfried H.

Modulators

Phase shift keying modulator or quadrature amplitude modulator

329304, 375308, 375329, H04L 2720, H04L 2722

Patent

active

059232234

ABSTRACT:
A transmission system and a transmitter (T) for such a system are disclosed for transmitting a digital signal (sr), encoded in symbols (Si), from the transmitter (T) to a receiver (R) at an arbitrary frequency position by quadrature modulation. In the transmitter, one of the two quadrature components (ki, kq) is delayed before the quadrature modulation by a given time interval (td).

REFERENCES:
patent: 4528526 (1985-07-01), McBiles
patent: 4567602 (1986-01-01), Kato et al.
patent: 5025455 (1991-06-01), Nguyen
patent: 5615230 (1997-03-01), Gunther et al.
IEEE Transactions on Communications, pp. 275-283, vol. COM-30 (1982) Jan., No. 1, New York, USA., Le-Ngoc et al, "New Modulation Techniques for Low-Cost Power and Bandwidth Efficient Satellite Earth Stations".

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