基于SC-LDGM码的随机混合业务传输方案  

A Scheme for Transmission of Random Hybrid Services Based on SC-LDGM Codes

作　　者：王翌昕 蔡穗华 马啸[1] WANG Yi-xin;CAI Sui-hua;MA Xiao(School of Computer Science and Engineering,Sun Yat-Sen University,Guangzhou,Guangdong 510006,China)

机构地区：[1]中山大学计算机学院,广东广州510006

出　　处：《电子学报》2022年第10期2305-2310,共6页Acta Electronica Sinica

基　　金：广东省重点领域研发计划项目(No.2018B010114001);广东省自然科学基金重大基础研究培育基金(No.2016A030308008);国家自然科学基金面上项目(No.61971454,No.61771499)。

摘　　要：本文研究了一种适用于随机混合业务的传输方案,其可以对随机到达的不同业务实现不等差错保护,从而满足不同业务对于传输质量的不同需求.该方案的主要优势是,利用一套编译码器满足不同业务基本的质量要求;而对于要求较高的业务,则采用级联外码的技术.另一个有别于传统方法的创新点是,该方案采用叠加的方式实现业务类型标识比特的传输,既不消耗额外的带宽,也不消耗额外的传输能量.仿真结果表明,本文所提出的编译码方案能高效准确地对业务类型进行识别,从而有效地实现随机混合业务的不等保护.In this paper,a scheme for transmission of random hybrid services is studied,which,to meet the different transmission quality required by different services,realizes unequal error protection(UEP)for randomly arrived services.The main advantage of this scheme is that the basic quality required by all services is guaranteed by the same set of codec,while the service with higher quality requirement is further protected by an outer algebraic code.Another novelty compared with the conventional method is that the scheme uses the superposition method to transmit the identification bits for distin⁃guishing the services,which consumes neither extra bandwidth nor extra transmission energy.The simulation results show that the proposed coding and decoding scheme can identify the service types efficiently and accurately,and can achieve ef⁃fectively the unequal protection of random hybrid services.

关 键 词：随机混合业务传输 不等差错保护 系统卷积低密度生成矩阵码 业务类型辨识 

分 类 号：TN919[电子电信—通信与信息系统]