Interference mitigation technique for coexistence of pulse-based UWB and OFDM

Authors:
Kohei Ohno;Tetsushi Ikegami
Affiliations:
Department of Electronics and Communications, Meiji University, Kawasaki, Kanagawa, Japan;Department of Electronics and Communications, Meiji University, Kawasaki, Kanagawa, Japan
Venue:
EURASIP Journal on Wireless Communications and Networking - Cognitive Radio and Dynamic Spectrum Sharing Systems
Year:
2008

Citing 3
Cited 1

OFDM for Wireless Multimedia Communications

OFDM for Wireless Multimedia Communications
Simulation of Interference Effects from MB-OFDM and DS-UWB to a QPSK Digital Transmission System

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Multiple signal waveforms adaptation in cognitive ultra-wideband radio evolution

IEEE Journal on Selected Areas in Communications - Part 1

An Interfering Signal Detection Technique Using an Ultra Wideband Chirp Template Waveform

Wireless Personal Communications: An International Journal

Quantified Score

Hi-index	0.00

Visualization

Abstract

Ultra-wideband (UWB) is a useful radio technique for sharing frequency bands between radio systems. It uses very short pulses to spread spectrum. However, there is a potential for interference between systems using the same frequency bands at close range. In some regulatory systems, interference detection and avoidance (DAA) techniques are required to prevent interference with existing radio systems. In this paper, the effect of interference on orthogonal frequency division multiplexing (OFDM) signals from pulse-based UWB is discussed, and an interference mitigation technique is proposed. This technique focuses on the pulse repetition cycle of UWB. The pulse repetition interval is set the same or half the period of the OFDM symbol excluding the guard interval to mitigate interference. These proposals are also made for direct sequence (DS)-UWB. Bit error rate (BER) performance is illustrated through both simulation and theoretical approximations.