Link Budget #4. How to Calculate the Predict Path Loss with Okumura Model for Open, Urban & Suburban скачать в хорошем качестве

Link Budget #4. How to Calculate the Predict Path Loss with Okumura Model for Open, Urban & Suburban

Link Budget playlist. Watch these video to understand more on Link Budget.    • How EM Wave & Light Bend & Break: Reflecti...   For access to this presentation materials, membership is required: I need the Material PPT Sent me an email to Technologies.Discussion@gmail.com If you need the whole playlist material, send me email and we discuss. Give me some time to response. Thanks. The Okumura model is a radio propagation model that was built using the data collected in the city of Tokyo, Japan. The model is ideal for using in cities with many urban structures but not many tall blocking structures. The model served as a base for the Hata model. Okumura model was built into three modes. The ones for 1) urban, 2) suburban and 3) open areas. The model for urban areas was built first and used as the base for others. Rules to comply when using Okumura Model Frequency: 150–1920MHz (typically extrapolated to 3000 MHz) Mobile station antenna height: between 1 m and 3 m Base station antenna height: between 30 m and 100 m Link distance: between 1 km and 100 km Okumura model is wholly based on measured data. Path Loss = FSPL + Amu (d,f) – G(hte) – G(hre) – G(Area) Okumura was developed to estimate the median attenuation for free space (Amu) of 3m. These curves were generated from extensive measurements with vertical omnidirectional antennas on both base and mobile stations as a function of frequency in the range 100 - 1920 MHz and distance from the base and mobile station from 1 to 100 km. GAREA is the gain due to the type of environment.  Urban "Built-up city or large town crowded with large buildings and two or more storied houses, or in a larger village closely interspersed with houses and thickly-grown tall trees.“ Suburban "Village or highway scattered with trees and houses - the area having some obstacles near the mobile radio car, but still not very congested.“ Open "No obstacles like tall trees or buildings in the propagation path and a plot of land which is cleared of anything 300 to 400m ahead, as, for instance, farm-land, rice field, open fields, etc."