Xu, T;
Darwazeh, I;
(2016)
Transmission Experiment of Bandwidth Compressed Carrier Aggregation in a Realistic Fading Channel.
IEEE Transactions on Vehicular Technology
(99)
10.1109/TVT.2016.2607523.
(In press).
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Abstract
In this paper, 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) scenario1. Unlike orthogonal frequency division multiplexing (OFDM), SEFDM is a non-orthogonal waveform which, relative to OFDM, packs more sub-carriers 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 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 7 CCs in a limited bandwidth while CA-OFDM can only put 5 CCs in the same bandwidth. In this work, 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 BER performance for CA-SEFDM is very close to CA-OFDM and the effective spectral efficiency of CA-SEFDM can be substantially higher than that of CA-OFDM.
| Type: | Article |
|---|---|
| Title: | Transmission Experiment of Bandwidth Compressed Carrier Aggregation in a Realistic Fading Channel |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TVT.2016.2607523 |
| Publisher version: | http://dx.doi.org/10.1109/TVT.2016.2607523 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/. |
| Keywords: | Bandwidth, OFDM, Long Term Evolution, Detectors, Complexity theory, Frequency division multiplexing, Radio frequency, non-orthogonal, Multicarrier communications, carrier aggregation, 5G, spectral efficiency, OFDM, SEFDM |
| UCL classification: | UCL 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: | https://discovery.ucl.ac.uk/id/eprint/1544939 |
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