Performance Evaluation of Path Loss Models for Broadcasting Applications

Doctoral Thesis / Dissertation from the year 2013 in the subject Engineering - Communication Technology, , language: English, abstract: In advance democracies radio spectrum is divided among three categories of broadcasters: public, private and community. In India while there is no formal reservation on the number of licenses that can be granted in any location but now India is has slowly started opening its FM band to private entrepreneurs for commercial use and for community radios to serve and educate a community. Today there are around 163 operational community radio stations, out of total 1304 applications till February 2014, letter of intent have been issued to 461. So, to achieve good and reliable reception a proper behavior of field strength and path loss should be known for that particular transmitted power and transmitting antenna height. A practical engineer should know which model he should consider best suited to design a parameter of a transmitting station so, as to achieve a good quality signal at a known distance. As there are many software's and empirical path loss models are available but all of the available models has been designed using the geographical and environmental conditions of that particular place or country and till date none has been designed particularly for Indian geographical and environmental conditions. So, to accomplish a good propagation model, I have divided my work into three phases. In the first phase, the performance evaluation of path loss parameters has been accomplished. In this we have taken two FM station, one is working at Gurdaspur with specifications as : Prad 100w,frequency 100.1 MHz and transmitting antenna height of 45m and second FM radio is working at Kathua (j&k) with Prad of 10 kw , frequency 102.2 MHz and transmitting antenna height of 100m. Field strength measurements have been taken at specified distances with Anritsu site master and Anritsu dipole antenna of height 4m. The various parameters such as path