Research on ka-band adaptive erasure codes in deep space communications

被引：0
作者：
Zhou, Jie [1 ]
Jiao, Jian [1 ]
Yang, Zhi-Hua [1 ]
Gu, Shu-Shi [1 ]
Zhang, Qin-Yu [1 ]
机构：
[1] Harbin Institute of Technology Shenzhen Graduate School
来源：
Yuhang Xuebao/Journal of Astronautics | 2013年 / 34卷 / 01期
关键词：
Deep-space communication; Ka-band; LT code; RS code; Weaken robust solitary wave distribution;
D O I：
10.3873/j.issn.1000-1328.2013.01.013
中图分类号：
学科分类号：
摘要：
Deep-space communication will employ Ka-band for future exploration missions. While the Ka-band links with limited margin, it is much more susceptible to fluctuating weather conditions of ground station area, thus leading to interrupt easily. A low-error weather state forecast model is designed by combining a two-state Markov Gilbert-Eliot channel for the noise temperature and CCSDS File Delivery Protocol (CFDP) Asynchronous NAK mode. Considering the different downlink's packet loss rate in two states separated by the noise temperature threshold, a packet erasure concatenated coding scheme composed of RS code and LT code with Weaken Robust Soliton Distribution (WRSD) is proposed. The coding scheme is capable to adapt code rate to maintain the Ka-band link continuity and effective throughput. Simulation results show that the algorithm can recover erasure packets, enhance decoding performance, increase system throughput and improve transmission efficiency.
引用
收藏
页码：92 / 98
页数：6
相关论文
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