Terrestrial Digital Sound Broadcasting(DAB) And Consideration in Coverage Network Planning
Dong Ding · Radio & TV Broadcast Engineering · 1992
General characteristics, technical and operational requirements for trrestrial digital sound broadcasting system (DAB) for vehicular, portable and fixed reception, which has been developed in the recent years are described briefly in this article. Emphasis is laid on the basic principles and system parameters of the advanced source coding (MUSICAM) and channel coding (COFDM) techniques employed in DAB system, which are particularly suitable for overcoming multipath effects in mobile reception. The optimum frequency band for DAB in the VHF/FM broadcasting band and improved spectrum utilization for plannimg the DAB service are discussed. A general description of the coverage provided single-frequency network (SFN) is given. All the information included in the article are mainly taken from the newest documents of EBU and CCIR in 1990 to 1992. The use of complicated mathematical equations are avoided.