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空间通信与BATS码:天成之合
杨伟豪1,2, 董光亮3, 朱键1,2, 李海涛3, 杨升浩4, 陈超5
1.香港中文大学 网络编码研究所, 香港;2.香港中文大学深圳研究院, 深圳 518072;3.北京跟踪与通信技术研究所, 北京 100094;4.香港中文大学(深圳), 深圳 518072;5.西安电子科技大学 通信工程学院, 西安 710071
摘要:
创新通信技术在国家重大空间技术开发计划中有着巨大的需求。本文综述了基于网络编码的空间通信技术,旨在探索未来基于网络编码的空间通信技术的可行性和潜力。首先讨论了空间通信的特点,并给出了不同编码方法的概述;详细介绍了基于网络编码的批量稀疏编码(BATS码)创新技术。BATS码作为一种潜在的应用技术可以很好地解决多跳中继网络中严重丢包问题;给出一个BATS码原型设计和实现,实验结果证明BATS码比现有技术具有明显优势;最后,讨论了BATS码在空间通信中的应用前景。
关键词:  空间通信;丢包;网络编码;BATS码
DOI:10.15982/j.issn.2095-7777.2018.02.004
分类号:V11
基金项目:北京跟踪与通信技术研究所和香港中文大学深圳研究院联合研究项目“网络编码在航天测控通信领域的应用研究”资助项目
Space Communication and BATS Codes: A Marriage Made in Heaven
Raymond W. YEUNG1,2, DONG Guangliang3, ZHU Jian1,2, LI Haitao3, YANG Shenghao4, CHEN Chao5
1.Institute of Network Coding, The Chinese University of Hong Kong, Hong Kong, China;2.Shenzhen Research Insititute, The Chinese University of Hong Kong, Shenzhen 518072, China;3.Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China;4.Network Coding Laboratory, The Chinese University of Hong Kong, Shenzhen 518072, China;5.State Key Laboratory of ISN, Xidian University, Xi'an 710071, China
Abstract:
Innovative communication technologies are in great demand in the national space development program. In this paper, space communication with network coding is studied, with the aim of exploring the feasibility and potential of network coding for future space communication. The characteristics of space communication are first discussed, and an overview of different coding based methods is given. As a potentially applicable technology, network coding based Batched Sparse (BATS) code is presented to address the packet loss problem in multi-hop relay networks. In particular, a BATS code prototype is designed and implemented, and the experiment results demonstrate the advantages of BATS codes over alternative technologies. Finally, the prospect of deployment of BATS codes in space communication is discussed.
Key words:  space communication;packet loss;network coding;BATS code