数字电视地面广播系统信息解析算法  

System Information Detection Algorithm for Digital Television Terrestrial Broadcasting

作　　者：刘斌彬[1,2] 葛启宏[1,2] 王静[1,2] 

机构地区：[1]国家广电总局广播科学研究院 [2]北京泰美世纪科技有限公司,北京100097

出　　处：《电视技术》2011年第24期17-18,24,共3页Video Engineering

基　　金：国家科技支撑计划项目(2009BAH40B05)

摘　　要：数字电视地面广播系统提供了多种传输模式,用以满足不同的业务和不同的组网环境对信号质量的要求,从而实现运营的灵活性和经济性,这些模式参数都通过系统信息来指示。准确地进行系统信息解析是系统终端实现正常接收的关键,提出了一种数字电视地面广播的系统信息解析算法。实验结果表明,该算法具有很高的可靠性,其与系统最低载噪比门限之间的裕度大于1 dB,可以有效保证系统终端的正常接收。Digital television terrestrial broadcasting system allows selection of different transport modes according to service feature and networking environment, so as to achieve operation flexibility and economy. These model parameters are indicated by system information. Hence, accurate detection of system information is critical for successful receival of system terminals. A system information detection algorithm for digital television terrestrial broadcasting system is presented. Experimental results show that the algorithm has high reliability. It has more than 1 dB margin of carrier to noise ratio threshold, and can guarantee the successful receival of system terminals.

关 键 词：数字电视 地面广播 系统信息 扩频 

分 类 号：TN934.3[电子电信—信号与信息处理]