Numerically controlled oscillator with complex exponential outpu

Details Numerically controlled oscillator with complex exponential outpu Numerically controlled oscillator with complex exponential outpu

1994-10-13

1996-05-14

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 1A, 327146, H03D 324

Patent

active

055175350

ABSTRACT:
A numerically controlled oscillator that outputs a complex exponential value (sine and cosine). The numerically controlled oscillator inputs a scalar phase increment and uses the scalar phase increment to approximate a complex exponential phasor increment. A complex multiplier multiplies the exponential increment by an exponential value previously output from the oscillator to yield a multiplication result. A recursive amplitude normalizer, connected to the complex multiplier, normalizes the multiplication result to yield the complex exponential value.

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patent: 4879728 (1989-11-01), Tarallo
patent: 5119037 (1992-06-01), Ichiyoshi
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patent: 5410573 (1995-04-01), Taga et al.
Connelly, "Design of the Westinghouse Series 1000 Mobile Phone," IEEE, pp. 347-350, May 18, 1993.
Connelly, "The Westinghouse Series 1000 Mobile Phone: Technology and Aplications," IEEE, pp. 375-379, May 18, 1993.

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