Patent ID: 7653148
Filing Date: 2010-01-26
Classification: H04L,H04N

Abstract:
1. A method for modulating first input signal and a second input signal, each of said first and second input signals comprised of an ordered series of samples separated by a substantially constant period T, the method comprising: providing a first carrier signal, said first carrier signal comprised of a first ordered series of first carrier samples separated by the substantially constant period T, wherein one of said first series of carrier samples corresponds to each of the first input signal samples; providing a second carrier signal, said second carrier signal comprised of a second ordered series of carrier samples separated by the substantially constant period T, wherein one of said second series of carrier samples corresponds to each of the second input signal samples; providing a Digital to Analog Converter (DAC); selecting a plurality of groups of N successive first samples from said first series of input signal samples, said first series of samples having an input order; for each group of first samples in parallel, multiplying each of said N first samples by said corresponding first carrier sample; recombining said groups of N multiplied first samples while maintaining said input order to form a first series of output samples; selecting a plurality of groups of N successive second samples from said second series of input signal samples, said second series of samples having an input order; for each group of N second samples in parallel, multiplying each of said N second samples by said corresponding second carrier sample; recombining said groups of N multiplied second samples while maintaining said input order to form a second series of output samples; adding each of said first series of output samples to a respective one of said second series of output samples to form a combined series of output samples; and converting said combined series of output samples to an analog signal using said DAC.