Patent ID: 6172994
Filing Date: 2001-01-09
Classification: H04B,H04L

Abstract:
A method of creating a composite waveform, comprising:(a) demultiplexing an input signal waveform into a plurality of baseband signals, each associated with separate spectral subbands, and decoding the plurality of baseband signals to form a plurality of scaled samples, each associated with one of the separate spectral subbands;demultiplexing a second input signal waveform into a second plurality of baseband signals, each associated with the separate spectral subbands, and decoding the second plurality of baseband signals to form a second plurality of scaled samples, each associated with one of the separate spectral subbands;(b) digitally combining, by respective spectral subband, each of the plurality of scaled samples with each of the second plurality of scaled samples in a digital combiner to form a plurality of combined subband samples, each associated with one of the separate spectral subbands; and(c) spectrally shaping the plurality of combined subband samples to form a composite waveform.