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Transmission Experiment of Bandwidth Compressed Carrier Aggregation in a R ealistic Fading Channel

Xu, T; Darwazeh, I; (2018) Transmission Experiment of Bandwidth Compressed Carrier Aggregation in a R ealistic Fading Channel. Presented at: IEEE VTC Spring Conference 2018, Porto-Portugal. Green open access

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Abstract

This is an invited poster which is based on a paper published in IEEE Transactions on Vehicular Technology, Vol. 66, Issue 5, pp. 4087-4097 https://ieeexplore.ieee.org/abstract/document/7572173/ The paper reports an experimental testbed is designed to evaluate the performance of a bandwidth compressed multicarrier technique, termed spectrally efficient frequency division multiplexing (SEFDM) in a carrier aggregation (CA) scenario. Unlike orthogonal frequency division multiplexing (OFDM), SEFDM is a nonorthogonal waveform which, relative to OFDM, packs more subcarriers in a given bandwidth, thereby improving spectral efficiency. CA is a long-term evolution-advanced (LTE-Advanced) featured technique that offers a higher throughput by aggregating multiple legacy radio bands. Considering the scarcity of the radio spectrum, SEFDM signals can be utilized to enhance CA performance. The combination of the two techniques results in a larger number of aggregated component carriers (CCs) and, therefore, increased data rate in a given bandwidth with no additional spectral allocation. It is experimentally shown that CA-SEFDM can aggregate up to seven CCs in a limited bandwidth, while CAOFDM can only put five CCs in the same bandwidth. In this paper, LTE-like framed CA-SEFDM signals are generated and delivered through a realistic LTE channel. A complete experimental setup is described, together with error performance and effective spectral efficiency comparisons. Experimental results show that the measured bit error rate performance for CA-SEFDM is very close to CA-OFDM and that the effective spectral efficiency of CA-SEFDM can be substantially higher than that of CA-OFDM

Type: Poster
Title: Transmission Experiment of Bandwidth Compressed Carrier Aggregation in a R ealistic Fading Channel
Event: IEEE VTC Spring Conference 2018
Location: Porto-Portugal
Dates: 3-6 June 2018
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.ieeevtc.org/vtc2018spring/
Language: English
Additional information: Details of the conference on http://www.ieeevtc.org/vtc2018spring/final-program.pdf
Keywords: Fifth-generation (5G) multicarrier communications, nonorthogonal, orthogonal frequency division multiplexing (OFDM), spectral efficiency, spectrally efficient frequency division multiplexing (SEFDM)
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/10051795
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