Estimation on protection distance between analog TV and digital TV in adjacent channel at terrestrial television

Office of the National Broadcasting and Telecommunication Commission (NBTC), the Thai governmental organization decided to launch digital broadcasting. The implementation has to carry by the broadcasting license; the digital transmission testing has to carry on broadcasting on channel 30 while the analog television has to broadcast on channel 29. The adjacent channel interference must occur between analog television signal and digital television signal because of 20 MHz spacing between both signals. This paper proposes the experimental study of testing in order to measure and determine the degradation caused by the analog PAL television signal interferences on the digital television signal.