US 7,321,911 B2 | ||
Method of generating sinusoidal signal | ||
Petri Jarske, Tampere (Finland) | ||
Assigned to Nokia Corporation, Espoo (Finland) | ||
Filed on Mar. 11, 2004, as Appl. No. 10/797,951. | ||
Claims priority of application No. 20030389 (FI), filed on Mar. 14, 2003. | ||
Prior Publication US 2004/0249874 A1, Dec. 09, 2004 | ||
Int. Cl. G06F 1/02 (2006.01) |
U.S. Cl. 708—276 | 10 Claims |
1. A method for generating a sinusoidal signal, the method comprising:
determining for said sinusoidal signal a desired frequency and a sampling rate, the desired frequency being higher than an
upper limit frequency;
determining the nth sample of the first output sample sequence as a linear combination of a coefficient and two previous output samples;
determining the coefficient as a function of a multiple of said sampling rate, wherein the multiple is not equal to one; and
decimating the first output sample sequence by the multiple of the sampling rate so as to generate the sinusoidal signal of
the desired frequency at the desired sampling rate.
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