A3 Book section, chapters in research books

Wavelet-Based Narrowband Interference Suppression in Long Term Evolution Physical Channels


Publication Details
Authors: Miranda João Paulo, Carrillo Dick, Mathilde Fabiano, de Figueiredo Felipe A. P., Bazzo Juliano João
Editors of book: Paradisi, Alberto; Yacoub Michel, Daoud; Figueiredo, Fabrício Lira; Tronco, Tania
Publication year: 2016
Language: English
Title of parent publication: Long Term Evolution
ISBN: 978-3-319-23822-7
eISBN: 978-3-319-23823-4
JUFO-Level of this publication: 2
Open Access: Not an Open Access publication

Abstract

The interference caused by a narrowband system on another system that transmits wideband or spectrally spread signals is, in general, a known problem in wireless communications. However, analyses found in the literature often model the signal of interest as a generic transport channel whose subcarriers convey information of the same kind. This does not reflect the specific structure and application nature of signals conveyed through the different physical channels of the Long Term Evolution (LTE) standard. Having the candidacy of wavelets as adequate means to mitigate narrowband interference (NBI) in both the user and control planes of LTE previously confirmed in Miranda et al. (Narrowband Interference Suppression in Long Term Evolution Systems, pp. 707--711, 2014), in this chapter we extend our analysis to different wavelet types and operation conditions. Biorthogonal, Coiflets, Daubechies, and Haar wavelets are put to the test with respect to their ability to suppress NBI in the LTE downlink. Our simulations suggest that an optimized wavelet-based NBI suppression process calls for different wavelet types, the choice of which being dependent on the LTE physical channel considered. Daubechies are shown to be most convenient for synchronization channels, while Coiflets are found to be the best option when it comes to data shared channels.


Last updated on 2019-06-11 at 12:43