Liang, M;
Li, A;
Hu, X;
Masouros, C;
(2025)
A New Extrapolation Solution for MU-MISO Symbol-Level Precoding.
In:
2024 16th International Conference on Wireless Communications and Signal Processing (WCSP).
(pp. pp. 199-204).
IEEE: Hefei, China.
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Abstract
Constructive interference (CI) precoding, which converts the harmful multi-user interference into beneficial signals, is a promising and efficient interference management scheme in multi-antenna communication systems. However, CI-based symbol-level precoding (SLP) experiences high computational complexity as the number of symbol slots increases within a transmission block, rendering it unaffordable in practical communication systems. In this paper, we propose a symbol-level extrapolation (SLE) strategy to extrapolate the precoding matrix by leveraging the relationship between different symbol slots within in a transmission block, during which the channel state information (CSI) remains constant, where we design a closed-form iterative algorithm based on SLE both for PSK and QAM modulation. In order to further reduce the computational complexity, a sub-optimal closed-form solution based on SLE is further developed. Extensive simulation results illustrate that the proposed algorithms can dramatically reduce the computational complexity and time complexity with only marginal performance loss, compared with the conventional SLP design methods.
| Type: | Proceedings paper |
|---|---|
| Title: | A New Extrapolation Solution for MU-MISO Symbol-Level Precoding |
| Event: | 2024 16th International Conference on Wireless Communications and Signal Processing (WCSP) |
| Dates: | 24 Oct 2024 - 26 Oct 2024 |
| ISBN-13: | 979-8-3503-9064-3 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/WCSP62071.2024.10827608 |
| Publisher version: | https://doi.org/10.1109/wcsp62071.2024.10827608 |
| 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: | Wireless communication, Phase shift keying, Extrapolation, Quadrature amplitude modulation, Precoding, Simulation, Symbols, Signal processing algorithms, Modulation, Interference |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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/10206019 |
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