@inproceedings{fefab34194f3437997f7e1c6f86ba9af,
title = "Time Precoding Enabled Non-Orthogonal Frequency Division Multiplexing",
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.",
keywords = "Time precoding, non-orthogonal, Fast OFDM, spectrally efficient, NB-IoT waveform",
author = "Waseem Ozan and Haigh, {Paul Anthony} and Bo Tan and Izzat Darwazeh",
year = "2019",
month = sep,
doi = "10.1109/PIMRC.2019.8904402",
language = "English",
isbn = "978-1-5386-8111-4",
series = "Annual International Symposium on Personal, Indoor and Mobile Radio Communications",
publisher = "IEEE",
booktitle = "2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)",
address = "United States",
note = "IEEE International Symposium on Personal, Indoor and Mobile Radio Communications ; Conference date: 01-01-1900",
}