摘要
当前,数字音频广播系统面临多径干扰严重、频谱资源紧张等技术挑战,制约高质量音频业务的规模化发展。系统研究中国数字化广播(China Digital Radio,CDR)技术在广播电视工程中的应用,重点分析其正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)调制架构、动态子载波分配机制及分层编码复用等关键技术,探讨CDR技术在信号调制、误码检测和多路传输等方面的创新应用。研究结果表明,CDR技术通过智能化的资源调度和信号处理,能够有效提升广播系统的传输效率和可靠性,为构建新一代智能广播网络提供技术支撑。
At present,digital audio broadcasting systems are confronted with technical challenges such as severe multipath interference and tight spectrum resources,which restrict the large-scale development of high-quality audio services.This paper systematically studies the application of China Digital Broadcasting(CDR)technology in radio and television engineering,with a focus on analyzing its key technologies such as Orthogonal Frequency Division Multiplexing(OFDM)division multiplexing modulation architecture,dynamic subcarrier allocation mechanism and hierarchical coding multiplexing.It also explores the innovative applications of CDR technology in signal modulation,bit error detection and multi-channel transmission.The research results show that CDR technology,through intelligent resource scheduling and signal processing,can effectively improve the transmission efficiency and reliability of the broadcasting system,providing technical support for the construction of a new generation of intelligent broadcasting networks.
作者
李志远
LI Zhiyuan(Shouguang Convergence Media Center,Weifang 262700,China)
出处
《电视技术》
2025年第7期121-123,共3页
Video Engineering
