—Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) approach using 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 narrowband 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 wideband (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 a IEEE 802.15.3a channel model through simulation. In LOS channel medium (CM1), at low data rate (55 Mbps), performance of the DWPT MB-pulsed-OFDM system is better due to its inherent frequency diversity. At high data rate of 200 and 480 Mbps, the BER performance outperforms than DWPT MB-OFDM. For both low and high data rate applications, DWPT MB-pulsed-OFDM outperforms the conventional FFT MB-OFDM and DWPT MB-OFDM.
—UWB, MB-OFDM, DWPT MB-OFDM, DWPT MB-pulsed-OFDM, IEEE 802.15.3a, data rate, bit error rate.
Choudhury Sasmita Das is with the Dept. of Electronics and Telecommunication Engineering, P.I.E.T, Rourkela, India (e-mail: firstname.lastname@example.org).
Bikramaditya Das is with the Department of Electronics and Telecommunication Engineering, VSS University of Technology, Burla, India (e-mail: email@example.com).
Susmita Das is with the Electrical Engineering Department, National Institute of Technology Rourkela, India (e-mail: firstname.lastname@example.org).
Cite:Ch. Sasmita Das, Bikramaditya Das, and Susmita Das, "A MB-Pulsed-OFDM System Using Discrete Wavelet Packet Transform for Short Range Indoor Wireless Environment," Journal of Advances in Computer Networks vol. 2, no. 3, pp. 198-201, 2014.