eprintid: 10047182
rev_number: 41
eprint_status: archive
userid: 608
dir: disk0/10/04/71/82
datestamp: 2018-04-20 09:56:26
lastmod: 2021-10-29 22:41:25
status_changed: 2019-02-25 16:51:14
type: article
metadata_visibility: show
creators_name: Xu, T
creators_name: Darwazeh, I
title: Non-Orthogonal Narrowband Internet of Things: A Design for Saving Bandwidth and Doubling the Number of Connected Devices
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: Internet of Things, narrowband, NB-IoT, 5G, LPWAN, MTC, M2M, non-orthogonal, waveform, spectral effi-
ciency, testbed, experiment
note: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/.
abstract: IEEE Narrowband IoT (NB-IoT) is a low power wide area network (LPWAN) technique introduced in 3GPP release 13. The narrowband transmission scheme enables high capacity, wide coverage and low power consumption communications. With the increasing demand for services over the air, wireless spectrum is becoming scarce and new techniques are required to boost the number of connected devices within a limited spectral resource to meet the service requirements. This work provides a compressed signal waveform solution, termed fast-orthogonal frequency division multiplexing (Fast-OFDM), to double potentially the number of connected devices by compressing occupied bandwidth of each device without compromising data rate and bit error rate (BER) performance. Simulation is firstly evaluated for the Fast-OFDM with comparisons to single-carrier-frequency division multiple access (SC-FDMA). Results indicate the same performance for both systems in additive white Gaussian noise (AWGN) channel. Experimental measurements are also presented to show the bandwidth saving benefits of Fast-OFDM. It is shown that in a line-of-sight (LOS) scenario, Fast-OFDM has similar performance as SC-FDMA but with 50% bandwidth saving. This research paves the way for extended coverage, enhanced capacity and improved data rate of NB-IoT in 5th generation (5G) new radio (NR) networks.
date: 2018-06
date_type: published
official_url: https://doi.org/10.1109/JIOT.2018.2825098
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1549675
doi: 10.1109/JIOT.2018.2825098
lyricists_name: Darwazeh, Izzat
lyricists_name: Xu, Tongyang
lyricists_id: IDARW65
lyricists_id: TXUXX28
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: public
publication: IEEE Internet of Things Journal
volume: 5
number: 3
pagerange: 2120-2129
issn: 2327-4662
citation:        Xu, T;    Darwazeh, I;      (2018)    Non-Orthogonal Narrowband Internet of Things: A Design for Saving Bandwidth and Doubling the Number of Connected Devices.                   IEEE Internet of Things Journal , 5  (3)   pp. 2120-2129.    10.1109/JIOT.2018.2825098 <https://doi.org/10.1109/JIOT.2018.2825098>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10047182/7/Darwazeh%20VoR%2008334242.pdf