Patent ID: 8767845

Claim:
A transmitter system comprising: a transmitter comprising at least one processor and operatively associated memory, wherein the transmitter is programmed to implement: a data splitter to receive an input data signal and to split the signal into a first signal and a second signal, wherein the first signal is a wideband signal and the second signal is a narrowband signal; a first baseband modulator to receive the first signal and to generate a baseband modulated first signal, wherein a bandwidth of the baseband modulated first signal is centered at a center frequency; a second baseband modulator to receive the second signal and to generate a baseband modulated second signal; a subcarrier modulator to receive the baseband modulated second signal and to shift the bandwidth of the baseband modulated second signal by an offset frequency to generate a shifted second signal; and a signal combiner to combine the baseband modulated first signal and the shifted second signal to generate a composite signal, wherein the offset frequency is offset from the center frequency such that after combination of the baseband modulated first signal and the shifted second signal, at least a portion of the bandwidth of the shifted second signal overlaps a skirt of the bandwidth of the baseband modulated first signal; and a receiver comprising at least one processor and operatively associated memory, wherein the receiver is programmed to: receive the composite signal and implement: reproduce the first signal from the composite signal by canceling interference in the first signal due to the second signal considering the second signal estimate; and derive a second signal estimate from the composite signal.