## 5 Conclusions and Future Work
In Proceedings of the 2014 IEEE International Conference on Ultra-WideBand (ICUWB), Valencia, Spain, 26-30 June 2017; IEEE: Piscataway, NJ, USA, 2014; pp. 274-279. * [PERSON] et al. (2018) [PERSON]; [PERSON]; [PERSON] Efficient AoA-based wireless indoor localization for hospital outpatients using mobile devices. _Sensors_**2018**, _18_, 3698. * [PERSON] et al. (2016) [PERSON]; [PERSON]; [PERSON] Using iBeacon for newborns localization in hospitals. In Proceedings of the 2016 10 th International Symposium on Medical Information and Communication Technology (ISMICT), Worcester, MA, USA, 20-23 March 2016; IEEE: Piscataway, NJ, USA, 2016; pp. 1-5. * [PERSON] et al. (2019) [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON] IoT based hand hygiene compliance monitoring. In Proceedings of the 2019 International Symposium on Networks, Computers and Communications (ISNCC), Istanbul, Turkey, 18-20 June 2019; IEEE: Piscataway, NJ, USA, 2019; pp. 1-6. * [PERSON] and [PERSON] (2016) [PERSON]; [PERSON] A combined batteryless radio and wifi indoor positioning for hospital nursing. _J. Commun. Softw. Syst._**2016**, _12_, 34-44. [CrossRef]
* [PERSON] et al. (2014) [PERSON]; [PERSON]; [PERSON] Android-based navigation system for elderly people in hospital. In Proceedings of the 16 th International Conference on Advanced Communication Technology, Pyeongchang, Republic of Korea, 16-19 February 2014; IEEE: Piscataway, NJ, USA, 2014; pp. 371-377. * [PERSON] et al. (2000) [PERSON]; [PERSON]; [PERSON] GPS-less low-cost outdoor localization for very small devices. _IEEE Pers. Commun._**2000**, \(7\), 28-34. [CrossRef]
* [PERSON] and [PERSON] (2018) [PERSON]; [PERSON] Rssi-based indoor localization with the internet of things. _IEEE Access_**2018**, \(6\), 30149-30161. [CrossRef]
* [PERSON] and [PERSON] (2015) [PERSON]; [PERSON] WiFi-based indoor positioning. _IEEE Commun. Mag._**2015**, _53_, 150-157. [CrossRef]
* [PERSON] and [PERSON] (2015) [PERSON]; [PERSON] Location fingerprinting with bluetooth low energy beacons. _IEEE J. Sel. Areas Commun._**2015**, _33_, 2418-2428. [CrossRef]
* [PERSON] et al. (2014) [PERSON]; [PERSON]; [PERSON]; [PERSON] RSSI based Bluetooth low energy indoor positioning. In Proceedings of the 2014 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Busan, Republic of Korea, 27-30 October 2014; IEEE: Piscataway, NJ, USA, 2014; pp. 526-533. * [PERSON] and [PERSON] (2010) Saab, S.S.; [PERSON], Z.S. A standalone RFID indoor positioning system using passive tags. _IEEE Trans. Ind. Electron._**2010**, _58_, 1961-1970. [CrossRef]
* [PERSON] et al. (2019) [PERSON]; [PERSON]; [PERSON] A survey of indoor localization systems and technologies. _IEEE Commun. Surv. Tutor._**2019**, _21_, 2568-2599. [CrossRef]
* [PERSON] et al. (2019) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Visible Light Communication cyber-physical systems-on-chip for smart cities. In Proceedings of the 2 nd IEEE International Conference on Information Communication and Signal Processing (ICSP), Weihai, China, 28-30 September 2019; Volume 2019. * [PERSON] et al. (2021) [PERSON]; [PERSON]; [PERSON], E.S.A. ; [PERSON] A comparative analysis of localization algorithms for visible light communication. _Opt. Quantum Electron._**2021**, _53_, 108. * [PERSON] et al. (2023) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] Design Implementation of A Hybrid VLP/PLC-Based Indoor Tracking System for Smart Hospitals. In Proceedings of the 2023 IEEE International Conference on Consumer Electronics (ICCE), Las Vegas, NV, USA, 6-8 January 2023; IEEE: Piscataway, NJ, USA, 2023; pp. 1-3. * [PERSON] et al. (2021) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Integrated design of low complexity RSS based visible light indoor positioning and power-line communication system for smart hospitals.