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Time Precoding Enabled Non-Orthogonal Frequency Division Multiplexing

Lookup NU author(s): Dr Paul Haigh

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Abstract

© 2019 IEEE.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.


Publication metadata

Author(s): Ozan W, Haigh PA, Tan B, Darwazeh I

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Year of Conference: 2019

Online publication date: 21/11/2019

Acceptance date: 02/04/2016

Publisher: Institute of Electrical and Electronics Engineers Inc.

URL: https://doi.org/10.1109/PIMRC.2019.8904402

DOI: 10.1109/PIMRC.2019.8904402

Library holdings: Search Newcastle University Library for this item

ISBN: 9781538681107


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