Abstract
In the next generation digital terrestrial television broadcasting (DTTB), higher transmission rate than that of the current system is required to realize super high-vision broadcasting. Higher-order digital modulation is considered as a promising candidate to increase the transmission data rate without increasing radio frequency bandwidth. However, higher-order digital modulation is vulnerable to noise and distortion. Radio over Fiber (RoF) is employed to compensate radio dead zone such as underground city and inside tunnel area. The signal transmitted by using RoF is suffered distortion caused by optical modulator. This paper evaluates the performance of an optical repeater system using radio over fiber for next generation DTTB system employing higher-order digital modulation by using computer simulation.
