摘要
甚高频数据交换系统是国际海事组织主导e-航海战略中的主要通信方式之一。其中,VDE-TER业务根据物理信道特性划分了多种业务逻辑信道。为保证VDE-TER信道传输质量前提下提升数据传输效率,本文在深入分析VDE-TER不同业务逻辑信道下Turbo编译码算法基础上,提出了一种基于先验修正因子的Max-Log-Map改进算法。该算法针对VDE-TER不同业务逻辑信道Turbo编码特性,通过仿真和实际物理信道大样本性能测试,实现了VDE-TER特定逻辑信道的最优修正因子值确定。结果表明,加入修正因子的译码算法与传统译码算法相比,性能提升0.6~0.8 dB增益,为高性能VDES产品研制奠定了理论技术基础。
VHF data exchange system is one of the main communication methods in the e-navigation strategy led by the international maritime organization.Among them,VDE-TER business divides many kinds of business logical channels according to physical channel characteristics.In order to improve the data transmission efficiency under the premise of ensuring the transmission quality of the VDE-TER channel,this paper proposes an improvement of Max-Log-Map based on a priori correction factor based on an in-depth analysis of the Turbo encoding and decoding algorithms under different service logic channels of the VDE-TER algorithm.According to the Turbo coding characteristics of VDE-TER different service logical channels,the algorithm realizes the determination of the optimal correction factor value of the specific logical channel of VDE-TER through simulation and the performance test of large samples of actual physical channels.The results show that the performance of the decoding algorithm with correction factor is improved by 0.6~0.8 dB gain compared with the traditional decoding algorithm,which lays a theoretical and technical foundation for the development of high-performance VDES products.
作者
胡青
赵晨淞
Hu Qing;Zhao Chensong(School of Information Science and Technology,Dalian Maritime University,Dalian 116033,China)
出处
《电子测量技术》
北大核心
2023年第13期73-79,共7页
Electronic Measurement Technology
基金
国家重点研发计划(2021YFB3901501,2021YFB3901502,2021YFC2801002)
辽宁省科学技术计划项目(2021JH1/10400008)资助
作者简介
通信作者:胡青,教授,博士生导师,主要研究方向为海上通信导航技术、船联网和e-航海战略。E-mail:hq0518@qlmu.edn.com;赵晨淞,硕士研究生,主要研究方向为VDES系统Turbo码编译码的改进。E-mail:zcs450432182@163.com
