PERFORMANCE EVALUATION OF UWB-IR SYSTEM

Abstract

Ultra Wideband Technology for commercial communication application is a recent innovation. The short range wireless systems have recently gained a lot of attention to provide multimedia communication and to run high speed applications around a user centric concept in so called Wireless Personal Area Network (WPAN).  UWB technology presents itself as a good candidate for the physical layer of WPAN. In this thesis, a comparative performance analysis of the direct-sequence spread spectrum (DS-SS) for Pulse Position Modulation (PPM) and Pulse Amplitude Modulation (PAM) schemes carried out. The simulation results show that the bit error rate (BER) performance of the DS-SS PAM outperforms the DS-SS PPM systems. Further, study is carried out for selection of transmission pulse to meet the FCC specified frequency mask for indoor applications. The work is extended to cover the link budget analysis for UWB systems also. The present work can be extended in future to cover the realistic channel models for various applications such as sensor networks, WPAN and multipath etc. Channel coding can also be a promising research direction.