6-7 Adjacent-channel Interference between Digital and Analog Terrestrial Broalcasting Signals in Mobile Reception

Abstract

To investigate adjacent-channel interference with digital TV in mobile reception, the measurements on instantaneous field strength of digital/analog TV ware carreied out in Hokuriku district using the experimental facility. Looking upon a field strength retio as a DU ratio, 96% of mobile reception data satisfied the required DU retio of 24dB under the condition when the digital wasa transmitted 10dB lower than the analog channel co-using a transmitting antenn. It is also show that there in no co-relation in field strength fluctuation between adjacent channels in mobile reception.