Comparison of cylindrical mock-up path loss data to operational aircraft data. Determining path loss variations with distance and radius at VHF, L band and GPS/Satcom

2002 ◽  
Author(s):  
G. Fuller
Keyword(s):  
Path Loss ◽  
Loss Data ◽  
L Band ◽  
Aircraft Data

scholarly journals Path loss models with distance‐dependent weighted fitting and estimation of censored path loss data

2016 ◽  
Vol 10 (14) ◽  
pp. 1467-1474 ◽  
Author(s):  
Aki Karttunen ◽  
Carl Gustafson ◽  
Andreas F. Molisch ◽  
Rui Wang ◽  
Sooyoung Hur ◽  
...  
Keyword(s):  
Path Loss ◽  
Loss Data ◽  
Loss Models

scholarly journals Variations of GSM Path Loss Exponent with Propagation Distance at L-Band Frequencies in Different Microcellular Environment of Southwestern Nigeria

2021 ◽  
Vol 4 (1) ◽  
pp. 1-9
Author(s):  
Isaac Chukwutem Abiodun ◽  
Joshua Idogho
Keyword(s):  
Urban Environment ◽  
Path Loss ◽  
Base Station ◽  
Propagation Path ◽  
Rural Environment ◽  
Network Systems ◽  
Path Loss Exponent ◽  
Breakpoint Distance ◽  
L Band ◽  
Suburban Environment

Propagation path loss exponent is an important component of system design, and knowing the values helps to avoid surprises when the actual service begins. The path loss exponent is known to be critical in establishing the coverage of any new cellular network. Estimating the path loss exponent of any environment requires raising new data sets, which can be accomplished by conducting experiments. With this objective, the present study reports the L-band signal RSS level measurements of 6 GSM base stations in the urban, suburban and rural environments of Ondo and Ekiti States in the Southwestern region of Nigeria. Using a Sony Ericsson TEMS phone monitoring device—connected to a laptop equipped with TEMS software and base station cell reference—and a GPS device, RSS measurements were performed in each sector of the base station up to 1200 m, employing a single sector verification method. The values of path loss exponents were computed from the deduced values of path loss at 50 m intervals up to distances of 1200 m. Close to the base station, the following exponent values were observed—between 2.0 and 3.8 in the urban environment, 2.0 to 2.8 in the suburban environment while for the rural environment, 1.5 to 2.6 we're observed. After the breakpoint distance, higher path loss exponent values of up to 6 was recorded in the urban environment, exponent value of up to 4.3 was observed in the suburban environment and up to 3.5 exponent value in the rural environment. It was also observed that the rural environment presented the longest breakpoint distance of 500 m. The high path loss exponents observed, especially in the urban environment, could cause GSM operators to rethink the margins they have provided. This study is useful for the design of upcoming network systems in these regions and in similar regions.

scholarly journals Millimeter-Wave Omnidirectional Path Loss Data for Small Cell 5G Channel Modeling

IEEE Access ◽  
2015 ◽  
Vol 3 ◽  
pp. 1573-1580 ◽  
Author(s):  
George R. Maccartney ◽  
Theodore S. Rappaport ◽  
Mathew K. Samimi ◽  
Shu Sun
Keyword(s):  
Millimeter Wave ◽  
Path Loss ◽  
Channel Modeling ◽  
Small Cell ◽  
Loss Data
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