Evaluation of Some Path Reduction Factor Models Performance i n Tropical Location

Abstract

Performance evaluation of the ITU-R. P.530-17, Ghiani and Budalal model are considered for this work. It is found that the predicted values from the ITU-R and Ghiani distance factor models are seen to gradually decrease with an increase in path length for distances below 1km. Results further suggest that for a link length of 300 m, the Ghiani model predicts a 0.2499 dB (1.059 w) to 0.3273 dB (1.078 w) precipitation loss across all four (4) stations. For the ITU-R. P.530-17 model, a 3.4741 dB (2.225 w) to 5.329 dB (3.411 w) precipitation loss is estimated across all stations while the Budalal model estimated a 2.8608 dB (1.932 w) to 4.6250 dB (2.901 w) precipitation loss across all stations. The ITU-R. P.530-17, Ghiani and Budalal model further suggest a precipitation loss in the Received Signal Strength (RSS) of a typical 5G base station operating in the four (4) stations considered to be at least -9.4733 dBm, -8.8601 dBm, and -6.2489 dBm respectively. Generally, all models are found to predict rain attenuation and distance factor values with disparities especially for link lengths above 300 m. Further research is recommended on the models for accurate prediction and improve agreement with measured values.

Elevation angle effect on slant path attenuation along earth-space paths: A Northern Nigeria perspective

“…α and β are regression constants given as 12.2903 and 0.2973, respectively. The rain gauge trials for a ten (10) year period have been obtained from the Nigerian Metrological Agency (NiMet) archives and converted to one-minute integration times using the approach described in equation ( 2)…”

“…Northern Nigeria experiences less rain than Southern Nigeria. Rain types in Northern Nigeria are more stratiform than convective [10]. Due to the larger raindrop size in most equatorial regions, slant-path attenuation increases with a decrease in elevation angle.…”

“…Due to the larger raindrop size in most equatorial regions, slant-path attenuation increases with a decrease in elevation angle. From [11][12][13][14][15], it is seen that higher elevation angles in tropical locations may lead to more significant rain attenuation. Other factors that affect rain attenuation prediction values for earth-space links include the cloud ceiling (rain height), frequency, and rain cell size.…”

Design and planning of a 5G fixed wireless network

“…The application of automated planning and modeling in wireless communications network design has risen in popularity, particularly in mobile telephony, namely global system for mobile communication (GSM) [1], [2] and universal mobile telecommunications service (UMTS) [3]- [6], but also in general broadband fixed wireless access (BFWA) [7], worldwide interoperability for microwave access (WiMAX) [8], [9], and WLAN [9]- [16]. Although automated planning approaches, such as mathematical programming techniques [2], [11], are often used in constructing and designing individual networks, they also play an essential role in studying a wide range of economic and technological challenges.…”