eprintid: 10080752 rev_number: 17 eprint_status: archive userid: 608 dir: disk0/10/08/07/52 datestamp: 2019-08-30 09:25:14 lastmod: 2020-02-13 04:50:56 status_changed: 2019-08-30 09:25:14 type: proceedings_section metadata_visibility: show creators_name: Liu, X creators_name: Darwazeh, I title: Quadrupling the data rate for narrowband internet of things without modulation upgrade ispublished: pub divisions: UCL divisions: A01 divisions: B04 divisions: C05 divisions: F46 keywords: Fast-OFDM, Hilbert transform pair, data rate, spectral efficiency, NB-IoT note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: This work proposes a novel signalling method for Narrowband Internet of Things (NB-IoT) mobile system where a quadrupled data rate can be achieved by combining two orthogonal techniques; the frequency orthogonal Fast-Orthogonal Frequency Division Multiplexing (Fast-OFDM) scheme coupled with the time orthogonal Hilbert transform (HT) pair. In this paper, the orthogonality features of one dimension in Fast-OFDM and of the HT pair are explored. The newly designed system structure is presented where the HT pulse pair is generated by square root raised cosine (SRRC) filter with a matched configuration at the receiver. System performance is investigated in terms of bit error rate (BER), effective data rate and spectral efficiency. Simulation results show that the HT-Fast-OFDM system provides 4 times the data rate relative to an OFDM system employing the same modulation scheme and occupying the same bandwidth. Furthermore, the proposed system has compelling advantages over 16-QAM OFDM for it achieves a better BER performance at the same spectral efficiency date: 2019-06-27 date_type: published publisher: IEEE official_url: https://doi.org/10.1109/VTCSpring.2019.8746685 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1678693 doi: 10.1109/VTCSpring.2019.8746685 isbn_13: 9781728112176 lyricists_name: Darwazeh, Izzat lyricists_name: Liu, Xinyue lyricists_id: IDARW65 lyricists_id: XLIUD32 actors_name: Liu, Xinyue actors_id: XLIUD32 actors_role: owner full_text_status: public publication: IEEE Vehicular Technology Conference place_of_pub: Kuala Lumpur, Malaysia event_title: 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) event_location: Kuala Lumpur, Malaysia event_dates: 28 April-1 May 2019 issn: 1550-2252 book_title: 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) citation: Liu, X; Darwazeh, I; (2019) Quadrupling the data rate for narrowband internet of things without modulation upgrade. In: 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring). IEEE: Kuala Lumpur, Malaysia. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10080752/1/PID1225628_VTC.pdf