naa a22 4500 510792049 CHVBK 20180411083323.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0931-9 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0931-9 Comparative Study Between Measurement and Predictions Using Geometrical Optics and Uniform Theory of Diffraction for Case of Non-Line-of-Sight (NLOS) in Indoor Environment [Elektronische Daten] [E. Cheng, Zulkifly Abbas, M. Fareq, K. Lee, K. You, S. Khor] This paper describes the investigation and comparison of the accuracy of a deterministic model for a WLAN system in the indoor environment. The measurement system consisted of a spectrum analyzer and a log-periodic antenna. Non-line-of-sight (NLOS) propagation (in furnished rooms) was investigated. All the measurement sites mentioned in this paper are located in the Division of Information Technology at Universiti Putra Malaysia. The furnished rooms mentioned above were a teaching laboratory and a computer laboratory. The measured path losses were compared with the results obtained using deterministic models, namely the geometrical optics model and the uniform theory of diffraction model with the aid of image theory. The predicted results showed good agreement with the measured data for the NLOS environment, with an absolute mean error that ranged between 1.61 and 3.07dB. Springer Science+Business Media New York, 2012 Geometrical optics nationallicence Uniform theory of diffraction nationallicence Diffraction nationallicence Cheng E. School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia aut Abbas Zulkifly Department of Physics, Faculty of Science, Universiti Putra Malaysia (UPM), 43400, Serdang, Malaysia aut Fareq M. School of Electrical Systems Engineering, Universiti Malaysia Perlis (UniMAP), 02000, Arau, Perlis, Malaysia aut Lee K. Department of Electrical and Electronic Engineering, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman (UTAR), 46200, Petaling Jaya, Selangor, Malaysia aut You K. Department of Radio Communication Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Malaysia aut Khor S. School of Electrical Systems Engineering, Universiti Malaysia Perlis (UniMAP), 02000, Arau, Perlis, Malaysia aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 2197-2213 0929-6212 71:3<2197 2013 71 11277 https://doi.org/10.1007/s11277-012-0931-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0931-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cheng E. School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia aut NATIONALLICENCE 700 1- Abbas Zulkifly Department of Physics, Faculty of Science, Universiti Putra Malaysia (UPM), 43400, Serdang, Malaysia aut NATIONALLICENCE 700 1- Fareq M. School of Electrical Systems Engineering, Universiti Malaysia Perlis (UniMAP), 02000, Arau, Perlis, Malaysia aut NATIONALLICENCE 700 1- Lee K. Department of Electrical and Electronic Engineering, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman (UTAR), 46200, Petaling Jaya, Selangor, Malaysia aut NATIONALLICENCE 700 1- You K. Department of Radio Communication Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Malaysia aut NATIONALLICENCE 700 1- Khor S. School of Electrical Systems Engineering, Universiti Malaysia Perlis (UniMAP), 02000, Arau, Perlis, Malaysia aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 2197-2213 0929-6212 71:3<2197 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer