Dawa, Mohamed, Herceg, Marijan et Kaddoum, Georges.
2022.
« Design and analysis of Multi-User Faster-Than-Nyquist-DCSK communication systems over multi-path fading channels ».
Sensors, vol. 22, nº 20.
Compte des citations dans Scopus : 2.
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Résumé
In this paper, we present a new multi-user chaos-based communication system using Faster-than-Nyquist sampling to achieve higher data rates and lower energy consumption. The newly designed system, designated Multi-user Faster Than Nyquist Differential Chaos Shift Keying (MU-FTN-DCSK), uses the traditional structure of Differential Chaos Shift Keying (DCSK) communication systems in combination with a filtering system that goes below the Nyquist limit for data sampling. The system is designed to simultaneously enable transmissions from multiple users through multiple sampling rates resulting in semi-orthogonal transmissions. The design, performance analysis, and experimental results of the MU-FTN-DCSK system are presented to demonstrate the utility of the newly proposed system in enabling multi-user communications and enhancing the spectral efficiency of the basic DCSK design without the addition of new blocks. The MU-FTN-DCSK system presented in this paper demonstrates spectral gains for one user of up to 23% and a combined gain of 25% for four (U=4) users. In this paper, we present a proof of concept demonstrating a new degree of freedom in the design of Chaos-based communication systems and their improvement in providing wireless transmissions without complicated signal processing tools or advanced hardware designs.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur Kaddoum, Georges |
| Affiliation: | Génie électrique |
| Date de dépôt: | 11 nov. 2022 20:59 |
| Dernière modification: | 18 nov. 2022 15:42 |
| URI: | https://espace2.etsmtl.ca/id/eprint/25758 |
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