@inproceedings{6977c7fdcd94410fab38d596c0a440c8,
title = "A Low-Complexity Cross-Domain OAMP Detector for OTFS",
abstract = "Orthogonal time frequency space (OTFS) modulation is an emerging technique for reliable communications in high-mobility environments. Designing low-complexity detectors with good error rate performance is a critical research problem for OTFS. To address this problem, a low-complexity cross-domain orthogonal approximate message passing (OAMP) detector is proposed. In specific, by utilizing the block-diagonal property of the time-domain effective channel matrix, an SVD-based orthogonal linear estimator with low complexity is designed, followed by an orthogonal non-linear estimator performed in the delay-Doppler domain with the help of the cross-domain message passing. We prove that the proposed detector has the potential to achieve Bayes optimality. The state evolution of the cross-domain OAMP detector is also derived. Numerical results show that the proposed detector outperforms classic detectors.",
keywords = "OAMP, cross-domain, detection, orthogonal time frequency space (OTFS)",
author = "Haifeng Wen and Weijie Yuan and Nan Wu and Jinming Wen",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 International Symposium on Wireless Communication Systems, ISWCS 2022 ; Conference date: 19-10-2022 Through 22-10-2022",
year = "2022",
doi = "10.1109/ISWCS56560.2022.9940366",
language = "English",
series = "Proceedings of the International Symposium on Wireless Communication Systems",
publisher = "VDE VERLAG GMBH",
booktitle = "2022 International Symposium on Wireless Communication Systems, ISWCS 2022",
}