DVB-S2标准中LDPC码性能研究

摘要

低密度奇偶校验（LDPC）码是一种具有稀疏奇偶校验矩阵的线性分组码，其性能可逼近香农限。由于其具有优异的性能，非常适合在未来的无线通信系统中应用，已成为信道编码领域的研究热点。DVB—s2是欧洲数字视频广播项目组在2003年开发出来的第二代卫星广播标准，采用了LDPC码作为前向纠错码。文章在分析LDPC码的基础上，研究了其在DVB—s2标准中应用，并对其性能进行仿真。%Low density parity check （LDPC） codes is a class of linear block codes which has a sparse parity-check matrix and may approach the Shannon limit. It＇s suitable to the mobile communication in the future since its perfect performance. These years, it is paid more and more attention to the survey of the error correcting coding. DVB-S2 is developed for the second generation satellite broadcasting standards by European Digital Video Broadcasting Project Group in 2003. The LDPC code is used as FEC by DVB-S2. This paper studies the LDPC code in application of DVB-S2 and simulate its performance base on its analysis.