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Experimental Validations of Bandwidth Compressed Multicarrier Signals

Xu, T; Darwazeh, I; (2016) Experimental Validations of Bandwidth Compressed Multicarrier Signals. In: 2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM). IEEE Green open access

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Abstract

We comprehensively summarize experimental validations 1 of bandwidth compressed multicarrier waveforms for future 5th generation (5G) applications. The proposed waveforms are derived from an existing non-orthogonal multicarrier concept termed spectrally efficient frequency division multiplexing (SEFDM) where sub-carriers are non-orthogonally packed at frequencies below the symbol rate. This improves the spectral efficiency at the cost of self-created inter carrier interference (ICI). In this work, experiments are reported and testing is carried out in three scenarios including long term evolution (LTE)-like wireless link; millimeter wave radio-over-fiber (RoF) link and optical fiber link. In the first scenario, for a given 25 MHz bandwidth, the SEFDM testbed can provide 70 Mbit/s gross data rate while only 50 Mbit/s can be achieved for an OFDM system occupying the same bandwidth. For the millimeter wave experiment, occupying a 1.125 GHz bandwidth, the gross bit rate for OFDM is 2.25 Gbit/s and with 40% bandwidth compression, 3.75 Gbit/s can be achieved for SEFDM. Two experimental optical fiber links are described in this work; a 10 Gbit/s direct detection optical SEFDM system and a 24 Gbit/s coherent detection SEFDM system. The LTE-like signals and millimeter wave technologies are well suited to provide last mile communications to end users as both can support mobility in wireless environments. The lightwave signals delivered by optical fibers would offer higher data rates and support long-haul communications. The reported techniques, used individually or combined, would be of interest to future wireless system designers, where bandwidth saving is of importance, such as in 5G networks, aiming to provide high capacity and high mobility, simultaneously while saving spectrum.

Type: Proceedings paper
Title: Experimental Validations of Bandwidth Compressed Multicarrier Signals
Event: 17th IEEE International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM), 21-24 June 2016, Coimbra, Portugal
Location: Coimbra, PORTUGAL
Dates: 21 June 2016 - 24 June 2016
ISBN-13: 9781509021864
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/WoWMoM.2016.7523580
Publisher version: https://doi.org/10.1109/WoWMoM.2016.7523580
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Multicarrier, 5G, LTE, spectral efficiency, OFDM, SEFDM, non-orthogonal, waveform, carrier aggregation, millimeter wave, radio over fiber, fiber wireless, optical fiber
URI: http://discovery.ucl.ac.uk/id/eprint/10051926
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