Ozan, W;
Haigh, P;
Tan, B;
Darwazeh, I;
(2019)
Time Precoding Enabled Non-Orthogonal Frequency Division Multiplexing.
In:
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC).
IEEE: New York, USA.
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Abstract
In this paper, we propose a time precoding scheme for cancelling inter-carrier interference in non-orthogonal frequency division multiplexing for the first time. Achieving high spectral efficiencies is a recurring and key challenge in wireless communications systems and researchers generally use high order and advanced modulation formats to approach this problem, in particular, non-orthogonal modulation formats are a topic of particular interest. Fast orthogonal frequency division multiplexing (F-OFDM) doubles the throughput of conventional OFDM by violating orthogonality of the quadrature carrier, causing interference in the real and imaginary domains. Here, we propose a precoding scheme that enables self-interference cancellation without the need of the interference level calculation. The proposed scheme is implemented in the context of a narrowband internet-of-things (NB-IoT) system and verified on a software define radio (SDR) testbed with realistic AWGN and multiple path channels from channel emulator for concept proving. By comparing with the standard OFDM transmission, the time precoded F-OFDM outperforms around 3dB by BER with same signal-to-ratio (SNR) level.
| Type: | Proceedings paper |
|---|---|
| Title: | Time Precoding Enabled Non-Orthogonal Frequency Division Multiplexing |
| Event: | Symposium on the Personal, Indoor and Mobile Radio Communications 2019 (PIMRC 2019), 8-11 September 2019, Istanbul, Turkey |
| Location: | Istanbul, Turkey |
| Dates: | 08 September 2019 - 11 September 2019 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/PIMRC.2019.8904402 |
| Publisher version: | https://doi.org/10.1109/PIMRC.2019.8904402 |
| 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: | Time precoding, non-orthogonal, Fast OFDM, spectrally efficient, NB-IoT waveform |
| 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 UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Security and Crime Science |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10082397 |
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