Compatibility analysis of in-band digital radio systems in interference channel environment

Many countries today face converting their analog radio broadcasting to digital service. Since the in-band digital radio systems are used in the existing analog FM frequency band, compatibility and robustness is very important characteristics of the digital radio systems. In this paper, we evaluate the performances of HD-Radio and DRM+ which are in-band digital radio broadcasting techniques in the various interference channel environment. These results are able to give basic information for the decision of digital radio standard in many countries.