Patent ID: 8472307
Filing Date: 2013-06-25
Classification: H04L

Abstract:
1. A channelization circuit for channelizing a plurality of baseband signals in a plurality of channels of a wideband signal, the channelization circuit comprising: a phase shifter circuit configured to receive the plurality of baseband signals; wherein the plurality of baseband signals include P subsets of the plurality of baseband signals, each subset having a respective ordinal number in a range from zero to P minus one; wherein the phase shifter circuit is configured to multiply each baseband signal in each subset by a plurality of powers of one of P complex roots of unity, the one of the P complex roots for each baseband signal in each subset corresponding to the respective ordinal number of the subset; an M-point Fourier transform circuit coupled to the phase shifter circuit; wherein the Fourier transform circuit is configured to frequency translate the plurality of baseband signals that are phase shifted by the phase shifter circuit to the plurality of channels; a plurality of M filtering circuits coupled to the Fourier transform circuit; a plurality of P commutator circuits coupled to the plurality of filtering circuits; wherein P evenly divides M without any remainder; and a summation circuit coupled to the plurality of commutator circuits, wherein the summation circuit is configured to generate the wideband signal.