Design de Comunicação por Luz Visível com Múltiplas Superfícies Inteligentes Reconfiguráveis de Cristal Líquido
Resumo
Comunicação através de Luz Vizível (Visible light communication - VLC) é uma solução promissora para as futuras redes heterogêneas 6G, embora enfrente desafios em cenários sem linha de visão. Para mitigar essa limitação, RIS vem sendo proposto para auxiliar a comunicação VLC, este trabalho propõe a primeira arquitetura VLC multiambiente baseada em STAR-RIS. Os resultados demonstram que a abordagem viabiliza a conectividade entre ambientes vizinhos, ampliando a cobertura e do sistema.
Referências
Amirabadi, M. and Nezamalhosseini, S. (2024). Sum rate optimization in star-ris assisted multiuser massive mimo-ofdm vlc systems. Physical Communication, 67:102524.
Bahaa, E. A. S. and Teich, M. C. (1991). Fundamentals of Photonics. John Wiley & Souns Inc.
Basar, E., Di Renzo, M., De Rosny, J., Debbah, M., Alouini, M.-S., and Zhang, R. (2019). Wireless communications through reconfigurable intelligent surfaces. IEEE Access, 7:116753–116773.
Basharat, S., Khan, M., Iqbal, M., Hashmi, U., Zaidi, S. A. R., and Robertson, I. (2022). Exploring reconfigurable intelligent surfaces for 6g: State-of-the-art and the road ahead. IET Communications, 16.
Cisco (2020). Cisco visual networking index: Forecast and trends, 2018 2023 white paper.
Ericsson (2019). Ericsson mobility report.
Ericsson (2022). Ericsson mobility report.
Ghassemlooy, Z., Popoola, W., and Rajbhandari, S. (2013). Optical Wireless Communications. CRC Press.
Hecht, E. (2017). Optics, chapter 4.6.2. Person Education Limited.
Khan, L. U. (2017). Visible light communication: Applications, architecture, standardization and research challenges. Digital Communications and Networks, 3(2):78–88.
Komine, T. and Nakagawa, M. (2004). Fundamental analysis for visible-light communication system using led lights. IEEE Transactions on Consumer Electronics, 50(1):100–107.
Liu, M., Shen, P., Xie, X., Wang, X., Liu, Q., Jia, Y., and Lu, L. (2024). Omni-digital reconfigurable intelligent surfaces enhanced visible light communications. Seventh Global Intelligent Industry Conference.
Liu, Y., Mu, X., Xu, J., Schober, R., Hao, Y., Poor, H. V., and Hanzo, L. (2021). Star: Simultaneous transmission and reflection for 360° coverage by intelligent surfaces. IEEE Wireless Communications, 28(6):102–109.
Maraqa, O., Aboagye, S., and Ngatched, T. M. N. (2024). Optical star-ris-aided vlc systems: Rsma versus noma. IEEE Open Journal of the Communications Society, 5:430–441.
Maraqa, O. and Ngatched, T. M. N. (2023). Optimized design of joint mirror array and liquid crystal-based ris-aided vlc systems. IEEE Photonics Journal, 15(4):1–11.
Mu, X., Liu, Y., Guo, L., Lin, J., and Schober, R. (2022). Simultaneously transmitting and reflecting (star) ris aided wireless communications. IEEE Transactions on Wireless Communications, 21(5):3083–3098.
Ndjiongue, A. R., Dobre, O. A., and Shin, H. (2024). Maximal transmission rate in omni-dris-assisted indoor visible light communication systems. IEEE Transactions on Vehicular Technology, 73(9):13956–13961.
Ndjiongue, A. R., Ngatched, T. M. N., and Dobre, O. A. (2023a). Impact of the refractive index on the achievable rate of liquid crystal-based digital-ris indoor vlc systems. IEEE Photonics Journal, 15(1):1–6.
Ndjiongue, A. R., Ngatched, T. M. N., Dobre, O. A., Haas, H., and Shin, H. (2023b). Double-sided beamforming in vlc systems using omni-digital reconfigurable intelligent surfaces. IEEE Communications Magazine, pages 1–7.
Poole, P. L., Krygier, A., Cochran, G. E., Foster, P. S., Scott, G. G., Wilson, L. A., Bailey, J., Bourgeois, N., Hernandez-Gomez, C., Neely, D., Rajeev, P. P., Freeman, R. R., and Schumacher, D. W. (2016). Experiment and simulation of novel liquid crystal plasma mirrors for high contrast, intense laser pulses. Scientific Reports.
Salehiyan, A. and Emadi, M. J. (2023). Performance analysis of uplink optical wireless communications in the presence of a simultaneously transmitting and reflecting reconfigurable intelligent surface. IET Optoelectronics, 17(4):129–138.
Tanaka, Y., Haruyama, S., and Nakagawa, M. (2000). Wireless optical transmissions with white colored led for wireless home links. In 11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525), volume 2, pages 1325–1329 vol.2.
UN, U. (2024). World population prospects 2024: Summary of results.
Union, I. T. (2024). Individuals using the internet.
Wu, Q., Zhang, J., Zhang, Y., Xin, G., and Guo, D. (2023). Asymptotic capacity maximization for miso visible light communication systems with a liquid crystal ris-based receiver. Photonics, 10(2).
Wu, Q., Zhang, J., Zhang, Y.-Y., and Xin, G. (2024). Asymptotic capacity maximization for miso visible light communications with mirror array-based riss on walls and an lc ris-based receiver. Optics Communications, 561:130496.
Zhang, X.-Y., Zhang, J., and Wu, Q. (2024). Fairness optimization for vlc systems with liquid crystal-based ris-enabled transmitters. IEEE Photonics Journal, 16(4):1–8.
