Broadband communications system

摘要

A signal of bandwidth Fmax is unambiguously transmitted over a datalink having a bandwidth less than Fmax by subdividing the signal into a plurality of subspectrums and bandshifting the subspectrums greater than the datalink bandwidth to baseband. Each bandshifted subspectrum is uniquely encoded using a different pilot tone which can be detected by the receiver to decode the receive signal and unambiguously recover the narrowband spectrum components.