Non-linear chirp based UWB waveform design for suppression of NBI

Authors:
Zhiquan Bai;Xiaotong Li;Dongfeng Yuan;Kyungsup Kwak
Affiliations:
School of Information Science and Engineering, Shandong University, Jinan 250100, China and National Key Laboratory of ISN, Xidian University, Xi'an 710071, China;School of Information Science and Engineering, Shandong University, Jinan 250100, China;School of Information Science and Engineering, Shandong University, Jinan 250100, China;Ultra Wideband Wireless Communications Research Center, Inha University (INHA UWB-ITRC), Incheon 402-751, Korea
Venue:
Wireless Communications & Mobile Computing
Year:
2012

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Abstract

In order to alleviate the narrowband interference (NBI) to ultra wideband (UWB) systems, we propose two non-linear UWB chirp waveforms based on the arctrigonometric and archyperbolic function in this paper. The proposed UWB pulses can obtain good performance in NBI suppression. Both of the two chirp pulses require only the time domain processing because of the inherent relationship between the frequency domain and the time domain. Theoretical analysis and simulation results show that the direct sequence pulse binary amplitude modulation (DS-BPAM) UWB systems with the proposed chirp waveforms can achieve excellent NBI suppression performance and outperform the linear chirp waveform based UWB system significantly. Copyright © 2010 John Wiley & Sons, Ltd. (In this paper, we propose two novel non-linear chirp UWB waveforms, atan chirp and asinh chirp, based on the arctrigonometric and archyperbolic function. Theoretical analysis and simulation results show the efficiency of the proposed UWB waveforms in NBI suppression at any single frequency band.)