Modulated passband signal generator

摘要

Disclosed is apparatus for generating carrier signals modulated by baseband symbol signals. The disclosed apparatus includes samplers for sampling input symbol signals, multipliers for multiplying the sampled signals by a precessing phase that is a function of the carrier signal's frequency, and modified filters for convolving the multiplied signals with a complex (real and imaginary) low pass impulse response and for selecting the real part of the convolved signals.