디지털 지상파 TV 신호간 간섭보호비를 이용한 시스템 파라메터 결정

Parameter Determination of Digital Terrestrial TV System Using Protection Ratios for digital TV

This paper presents a method to determine the rolloff factors of both the digital terrestrial TV modulator and the bandpass filter (BPF) at the digital TV receiver input, using an analytical power spectral density model satisfying given co-channel and adjacent channel protection ratios for the digital terrestrial broadcasting services. Since the proposed method is very simple and effective to use, also can be used regardless of type of systems or modulation techniques, this method is expected to be applied to select some other digital terrestrial broadcasting system specifications.