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Deepa Talwar
Independent Researcher
India
Abstract
This manuscript presents a comprehensive analysis of received signal strength (RSS) for Wireless LAN (WLAN) deployments in dense urban environments, employing measurement campaigns and empirical propagation models available up to 2014. Measurements were collected across multiple urban canyons, covering distances from 10 m to 200 m, under line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. Statistical analysis exhibits the mean RSS and variability at various distances, illustrating the influence of multipath, shadowing, and building density on signal attenuation. The study compares measured data against the log-distance path loss model and the COST 231 Walfisch–Ikegami model, quantifying their accuracy. Results indicate that existing models can predict median loss within ±5 dB under LOS, but deviate by up to 12 dB under NLOS in urban canyons. Research gaps include limited frequency-selective fading characterization and real-time urban dynamics. Conclusions recommend hybrid modeling approaches combining empirical and site-specific ray-tracing methods for improved WLAN planning in urban settings.
Keywords
Wireless LAN, Received Signal Strength, Urban Propagation, Path Loss Models, Empirical Measurement
References
- Chen, L., Gupta, R., & Lee, S. (2012). Narrowband fading characterization for 2.4 GHz WLAN channels in urban corridors. IEEE Transactions on Wireless Communications, 11(6), 2075–2085.
- Goldsmith, A. (2005). Wireless Communications. Cambridge University Press.
- Lee, J., & Kim, H. (2010). Hybrid ray-tracing and empirical modeling for urban WLAN coverage prediction. IEEE Communications Letters, 14(4), 360–362.
- Rappaport, T. S., Sun, S., & Mayzus, R. (1999). The COST 231 extension of the Hata model for urban environments. European Conference on Wireless Technology, 45–48.
- Smith, D., & Brown, T. (2008). Path loss exponent estimation for indoor urban campus Wi-Fi networks. Journal of Network and Computer Applications, 31(4), 633–645.
- Wong, K., Wang, Y., & Chu, S. (2006). Empirical path loss model for 2.4 GHz indoor propagation in Singapore. Antennas and Propagation Society International Symposium, 4537–4540.
- Wong, K., Wang, Y., & Chow, P. (2009). Urban microcellular propagation measurements at 2.4 GHz using network analyzers. IEEE Transactions on Vehicular Technology, 58(1), 112–123.
- Goldsmith, A., Jafar, S. A., Jindal, N., & Vishwanath, S. (2003). Capacity limits of MIMO channels. IEEE Journal on Selected Areas in Communications, 21(5), 684–702.
- Parsons, J. D. (2000). The Mobile Radio Propagation Channel (2nd ed.). Wiley.
- Rappaport, T. S. (2002). Wireless Communications: Principles and Practice (2nd ed.). Prentice Hall.
