Browsing by Author "Omar Abd. Aziz"
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Publication 6.5 Ghz And 10.2 Ghz Path Loss Measurements And Modeling For 5G Communications System Prediction(CleverMind Solution Pvt Ltd, 2017) ;Nor Raihan Zulkefly ;Tharek Abdul Rahman ;Marwan Hadri AzmiOmar Abd. AzizThis paper presents the large-scale parameters of narrowband multipath channel propagation of corridor environments for the fifth generation (5G) communications system. The measurements were conducted on narrow, wide and open corridor structure in Universiti Teknologi Malaysia (UTM) Kuala Lumpur campus, Malaysia. Measurements campaign are conducted at 6.5 GHz and 10.2 GHz , and path loss exponents (PLEs) and shadow fading are extracted using linear-least-square regression fitting from measured received-signal-strength (RSS) . Furthermore, the results measurements campaign is modeled using well-known closein reference distance (CI) and floating-intercept (FI) models. The result found in this work discovered the breakpoint distances (bps) of radio propagation are seen varies differently at those corridors for diverse frequencies. - Some of the metrics are blocked by yourconsent settings
Publication Path Loss Models For 5g Communications System In Corridors Environment(Semarak Ilmu Sdn Bhd, 2024) ;Nor Raihan Binti Zulkefly ;Omar Abd. Aziz ;Ibraheem ShayeaAhmed Al-SamanThis paper presents the propagation path loss channel models, developed from realfield measurement in Universiti Teknologi Malaysia (UTM) Kuala Lumpur, Malaysia. The purpose of the study is to characterize the channel at 28 GHz for 5G communications system in line-of-sight (𝐿𝑂𝑆) corridors environment. Measurement campaigns were conducted to measure the wireless signal of received signal strength at three different construction of straight corridors, narrow, wide and open corridors. The large-scale path loss models are developed using the closed-in reference distance (𝐶𝐼) and floating – intercept (𝐹𝐼) modelling approaches. Besides contributing path loss (𝑃𝐿) models at 28 GHz for different corridors dimension, the result found in this work discovered the breakpoint distance (𝑑𝑏𝑝) of radio propagation is seen varies differently at those corridors. PLE in CI model, open corridor significantly exaggerates of 1.92 compared to the narrow and wide corridor of 1.60 and 1.83 PLEs respectively. The lower than freespace (PLE is 2) in the corridors, attributes to the waveguide phenomenon within the corridors.