Title :
Comparison of some path loss prediction methods with VHF/UHF measurements
Author :
Prasad, M.V.S.N. ; Ahmad, Iqbal
Author_Institution :
Div. of Radio Sci., Nat. Phys. Lab., New Delhi, India
fDate :
12/1/1997 12:00:00 AM
Abstract :
Field strength measurements were conducted at VHF and UHF for different base station antenna heights in the south Indian coastal zones in urban, sub-urban, quasi-open and open regions. These experimentally observed values are compared with different prediction methods like Hata, ITU-R, Blonquist & Ladell, Egli, and Tbrahim & Parsons. The results showed that in sub-urban and urban regions Hata´s method gave reasonable agreement with the observed values and in the open region gave better agreement at 440 MHz than at 150 MHz. All the other methods deviated appreciably from the observed values
Keywords :
UHF radio propagation; VHF radio propagation; cellular radio; electric field measurement; land mobile radio; prediction theory; 150 MHz; 440 MHz; Hata´s method; VHF/UHF measurements; base station antenna heights; cellular mobile systems; field strength measurements; open regions; path loss prediction methods; prediction methods; quasi-open regions; south Indian coastal zones; sub-urban regions; urban regions; Prediction methods; UHF measurements;
Journal_Title :
Broadcasting, IEEE Transactions on