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All Journal Brilliance: Research of Artificial Intelligence Journal of Industrial Community Empowerment International Journal of Multidisciplinary Sciences and Arts Jurnal Pengabdian Cendikia Nusantara PERFECT: Journal of Smart Algorithms SULIWA: Jurnal Multidisiplin Teknik, Sains, Pendidikan dan Teknologi
Oktrison, Oktrison
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Modeling Validation of Received Signal Strength Indicator (RSSI) Measurements Using ESP8266 Sipahutar, Erwinsyah; Oktrison, Oktrison; Hafizh, Alfi; Candra, Rudi Arif; Budiansyah, Arie
International Journal of Multidisciplinary Sciences and Arts Vol. 5 No. 2 (2026): International Journal of Multidisciplinary Sciences and Arts, Article April 202
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/ijmdsa.v5i2.8076

Abstract

The rapid proliferation of indoor Internet of Things (IoT) systems has intensified the need for cost-effective and energy-efficient wireless coverage extension solutions. Conventional commercial WiFi repeaters are often over-provisioned in terms of hardware capability and power consumption, making them unsuitable for small-scale IoT laboratories and energy-constrained environments. Although microcontroller-based platforms such as the ESP32 have been widely used for IoT gateways, their systematic evaluation as Network Address Translation (NAT)-based WiFi repeaters remains limited. This paper presents the design, implementation, and experimental performance evaluation of a low-cost ESP32-based NAT WiFi repeater for indoor IoT networks. The proposed architecture operates in dual-mode (Station + Access Point) configuration using a single 2.4 GHz radio interface and software-based NAT forwarding. Hardware optimization, including Bluetooth deactivation and transmission power tuning, is applied to reduce energy overhead. Experimental measurements conducted in an indoor laboratory environment evaluate throughput, latency, received signal strength indicator (RSSI), and power consumption. Results indicate that the proposed system achieves 15–35 Mbps throughput under single-client conditions, with an average latency increase of 3–8 ms compared to direct router connections. The repeater improves signal strength by up to 18 dB in weak-coverage areas, extending effective indoor coverage by approximately 10–20 m. Measured power consumption remains below 1.2 W during active forwarding, significantly lower than typical commercial repeaters. The main contribution of this work lies in providing a quantified energy–performance characterization of a microcontroller-based NAT repeater.
Co-Authors Arie Budiansyah Candra, Rudi Arif Desniorita Desniorita, Desniorita Effendi Effendi Elfina, Sri Erwinsyah Sipahutar Fatmir Edwar Fawaidul Badri Hafizh, Alfi Helmi, Adlina Safitri Ilham, Dirja Nur Jamsan, Firdaus Jerry , Jerry Khairuman, Khairuman M. Arifin Mureja, Alfin Ningsih, Radna Raimon Raimon, Raimon Saputra, Herdian Saputri , Nanda Sepri Kurniadi Sipahutar , Erwinsyah Subriadi, Fejri Trismansyah, Trismansyah Youfa, Rita