A MB-Pulsed-OFDM System Using Discrete Wavelet Packet Transform for Short Range Indoor Wireless Environment
Multi Band Orthogonal Frequency Division Multiplexing (MB-OFDM) approach using Ultra Wide Band (UWB) signals with short duration of pulses provide unique opportunities in short-range high data rate wireless applications possessing easy penetration capability through obstacles, high precision ranging and low processing power. Discrete Wavelet Packet Transform (DWPT) reduces Inter Carrier Interference (ICI) and Narrow Band Interference (NBI) compared to FFT based MB-OFDM UWB, offering lower side lobes in the transmitted signal. Performance study of different data rates of DWPT MB-OFDM is attempted for NLOS Ultra Wide Band (UWB) channel in WPAN physical layer standard. In this paper, a comparison of DWPT MB-OFDM and DWPT MB-pulsed-OFDM UWB is carried out on an IEEE 802.15.3a channel model through simulation.