ROBUST MULTICARRIER SPREAD SPECTRUM TECHNIQUE FOR DATA TRANSMISSION OVER PARTIALLY JAMMED CHANNELS

摘要

Multicarrier spread spectrum (MC-SS) is an alternative to the conventional spread spectrum (SS) techniques that behaves significantly better when the system is subject to narrow- or partial-band interference. However, successful implementation of the optimum detector requires knowledge of noise and interference variance in each subcarrier band. In this correspondence, we propose a suboptimal detector for MC-SS that keeps the significant gain of MC-SS over the conventional SS, with a relatively low loss compared to the optimum MC-SS detector. Theoretical analysis and computer simulations that corroborate the theory are presented.