Phase accumulation continuous phase modulator

Details Phase accumulation continuous phase modulator Phase accumulation continuous phase modulator

1988-04-29

1989-10-10

Grimm, Siegfried H.

Modulators

Phase shift keying modulator or quadrature amplitude modulator

Including logic element

332144, 375 67, H04L 2712

Patent

active

048735000

ABSTRACT:
A general purpose continuous phase modulator is shown which greatly reduces the amount of memory and associated hardware complexity traditionally found in continuous phase modulators. The continuous phase modulator includes a phase accumulator which calculates the phase state in an on-line real time fashion. As a result, a continuous phase modulator is provided which is adaptable to any transmitter or transceiver product requiring power and bandwidth efficiency such as those found in satellite communications equipment.

REFERENCES:
patent: 4603393 (1986-07-01), Laurent et al.
patent: 4672634 (1987-06-01), Chung et al.
patent: 4686688 (1987-08-01), Chung et al.
patent: 4750192 (1988-06-01), Dzung
Anderson et al., Digital Phase Modulation, Plennum Press, New York, 1986, pp. 211-221.
Sundberg, "Continuous Phase Modulation", IEEE Communications Magazine, Apr. 1986, vol. 24, No. 4, pp. 25-38.

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