Performance Evaluation of DS-CDMA Based OFDM Multiuser System for Ultra Wideband (UWB) Communication

Here we have considered multiuser communication scenario with ultra wideband (UWB) communication. We propose two schemes for downlink communication, which are DS-CDMA based OFDM systems. For both the schemes, performance is compared with TH-PPM UWB. Performance of both the schemes is evaluated with additive white Gaussian noise (AWGN) channel. We have considered effect of higher spreading factor for AWGN channel. Also, we investigate performance of both the schemes under fading channel with different numbers of multipath components.