SPECTRAL SHAPING OF MULTICARRIER SIGNALS

摘要

A method and apparatus are provided for generating and transmitting a multicarrier signal representing data symbols, where the multicarrier signal is a linear combination of subcarriers. The apparatus modulates base signals with the data symbols, where each one of the base signals is a weighted sum of the subcarriers, whereby each one of the subcarriers is weighted by an element of a weighting vector residing in a nullspace of a constraint matrix. The constraint matrix represents constraints limiting a magnitude of the multicarrier signal's Fourier transform at frequencies outside a designated bandwidth.