河南省DMB-T单频网信号覆盖率的计算  

Mobile Digital Television Signal Coverage Calculations of He-Nan Extensive DMB-T Single Frequency Network

作　　者：夏铭[1] 陈晓光[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《电视技术》2006年第6期19-22,共4页Video Engineering

摘　　要：对DMB-T单频网进行了数学建模,采取分区分块算法,并考虑了地球曲率的影响,计算出河南省DMB-T单频网的场强分布,参照欧洲DVB-T标准,DMB-T系统所具有的特征,给出了DMB-T单频网覆盖率的参考标准。计算结果表明,基于16QAM调制解调器的河南省DMB-T单频网的信号能较好地覆盖平原地区。A mathematical model for the DMB-T single frequency network is set up in this paper, adopting the sub-regional blocks algorithm, and taking into account the curvature of the Earth. The field strength distribution of He-Nan DMB-T single frequcncy network is calculated. Then consulting the European DVB-T standards, and taking into account the characteristics of DMB-T system, the DMB-T single-frequency network coverage reference standards are provided. The results of calculation show that the plain areas in He-Nan province can be covered satisfactorily by using the 16QAM modem.

关 键 词：DMB-T标准 单频网 覆盖率 数字电视 场强分布 

分 类 号：TN92[电子电信—通信与信息系统]