深空通信中新型数字喷泉码构造及编译码方法研究

Digital fountain codes opens up new ways to improve the reliability and effectiveness of deep space communication network. Developing short and moderate length codes with good performance is a key factor in their application. Nowadays design of short and moderate length digital fountain codes face structural bottlenecks under either erasure channel model or noisy channel mode. Non-binary digital fountain codes are an effective way to break through this bottleneck. Non-binary digital fountain code is the latest achievement in the field of digital fountain codes, and there are a lot of research gaps. The project aims to study the non-binary digital fountain code encoding and decoding theory and methods, design a new type of practical codec scheme. Topics include: the principle of non-binary digital fountain codes and optimization methods; developing fast and efficient encoding and decoding methods; explore and analyze the performance of such methods codeword. The research project is not only a means to provide strong support for the development of deep space communications transmission technology, but also has positive significance for rich channel coding theory.

数字喷泉码为提高深空通信网中信息传输的可靠性和有效性开辟了新的途径，开发性能优良的中短码长码字是其推广应用的关键性因素。无论在删除信道模型下或是有噪信道模型下，中短码长的二进制数字喷泉码在设计上都遇到了结构性的瓶颈，非二进制数字喷泉码是突破这一瓶颈的有效途径。非二进制数字喷泉码是数字喷泉码研究领域的最新成果，尚留有大量的研究空白。本项目立足深空探测需求，旨在研究非二进制数字喷泉码编译码理论及方法，设计出新型实用的编译码方案。具体内容包括：研究非二进制数字喷泉码的构造原理及优化设计方法，开发针对该类码字的高效快速编译码方法，探索该类码字的性能及分析方法。本项目的研究成果不仅能够为深空通信中信息传输技术的发展提供有力支撑手段，而且对于丰富信道编码理论具有积极意义。