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Digital quadrature oscillator, part 1)
A response to this thread on dsprelated.com.Problem
Generate a quadrature local oscillator signal that performs an upconversion to a frequency of
of the clock rate, for example for use as a wavetable. Matlab script
n=16;
angle=(0:n-1)*2*pi/n;
LO_I=cos(angle);
LO_Q=-sin(angle);
figure(); hold on;
plot(LO_I, 'r+-');
plot(LO_Q, 'g+-');
legend('I', 'Q');
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  A possible implementation in C |
© Markus Nentwig 2007-2008
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