调频频段数字音频广播系统开发与性能分析  

Construction and Testing of Digital Audio Broadcasting System in FM Frequency Band

作　　者：况伟杰 李德海 KUANG Weijie;LI Dehai(Qingdao city Chengyang district Radio and Television Center,Qingdao 266109,China)

机构地区：[1]青岛市城阳区广播电视中心,山东青岛266109

出　　处：《电声技术》2023年第10期48-50,共3页Audio Engineering

摘　　要：设计一套调频(Frequency Modulated,FM)频段数字音频广播系统,采用调频频段传输并结合低密度奇偶校验(LowDensity Parity-Check,LDPC)编码和多星座映射以提高音质和覆盖范围。系统在物理层采用先进的调频调制技术,支持多星座映射方式,增强了传输灵活性。在性能分析方面,通过强化的编码保护方式确保解码可靠性。综合分析表明,所提出的系统在调频频段表现出卓越性能,为数字音频广播在广播领域的应用提供了有力支持。In this paper,an advanced Frequency Modulated(FM)band digital audio broadcasting system is designed,which uses FM band transmission and combines Low-Density Parity-Check(LDPC)coding and multi-constellation mapping to improve sound quality and coverage.The system adopts advanced frequency modulation technology in the physical layer,supports multi-constellation mapping mode,and enhances the transmission flexibility.In the aspect of performance analysis,the decoding reliability is ensured by enhanced encoding protection.The comprehensive analysis shows that the proposed system has excellent performance in the FM frequency band and provides strong support for the application of digital audio broadcasting in the broadcasting field.

关 键 词：调频(FM)频段 数字音频广播 性能测试 

分 类 号：TN934.2[电子电信—信号与信息处理]