Studies on performance analysis of mccdma over uwb channel and dynamic subcarrier allocation technique for adaptive modulation based mccdma

Abstract

The most important objective of 4G wireless system is to take care of newlinethe severe inter symbol interference ISI resulting from the high data rate newlineand to utilize the available limited bandwidth in a spectrally efficient manner newlineRecently Multicarrier Code Division Multiple Access MCCDMA system newlinehas been considered as the potential candidate for 4G wireless newlinecommunications to handle ISI most effectively MCCDMA systems can be newlineof practical interests the direct sequence DS spreading is employed together newlinewith multicarrier modulation to derive the benefits of both the techniques newline newline