Signal processor with reduced complexity, and receiver comprisin

Details Signal processor with reduced complexity, and receiver comprisin Signal processor with reduced complexity, and receiver comprisin

1996-08-28

1999-03-30

Bocure, Tesfaldet

Pulse or digital communications

Receivers

364731, H04L 2706, H04L 2714, H04L 2722

Patent

active

058898220

ABSTRACT:
A signal processor has an X-Y rotation circuit and a phase angle control circuit, in the phase angle control circuit, an input phase being approximated by a series of consecutive, in magnitude, decreasing phase angles for forming an output vector by rotation of an input vector over the approximation of the input phase. In the phase angle control circuit, an accuracy of the representation of a phase angle out of the series of phase angles, is dependent on the magnitude of the phase angle, thereby reducing the number of computations in the phase angle control circuit.

REFERENCES:
patent: 3939330 (1976-02-01), Fluet
patent: 3976869 (1976-08-01), Stella et al.
patent: 4843584 (1989-06-01), Sundaramurthy
patent: 4896287 (1990-01-01), O'Donnell et al.
patent: 4945505 (1990-07-01), Weiner et al.
patent: 5230011 (1993-07-01), Gielis et al.
patent: 5317753 (1994-05-01), Kuenemund et al.
"A 540-MHz 10-b Polar-to-Cartesian Converter", by Gerard C. Gielis et al, IEEE Journal of Solid State Circuits, vol. 26, No. 11, Nov. 1991, pp. 1645-1650.
"A unified algorithm for elementary functions", by J.S. Walather, Spring Joint Computer Conference, 1971, pp. 379-385.

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