Spinal码在深空通信中的应用研究

发布时间：2018-04-07 00:20

本文选题：Spinal编码　切入点：无速率码　出处：《高技术通讯》2015年04期

【摘要】：为了提高深空通信系统的传输能力,将Spinal码用于深空通信研究。结合深空信道损耗大、时延长、动态时变等特点,研究了适合深空信道的Spinal码编译码参数组合、星座映射及信道工作模式的选择等问题。通过仿真优化了Spinal码的编解码参数,对比了Spinal码在模拟信道和数字信道下的性能,给出了与Spinal码相匹配的调制方式。研究结果表明Spinal码具有极好的深空通信应用前景:采用256、512bit的短码长设计,配合以16APSK调制的Spinal码,在模拟信道工作模式下,性能远优于传统上采用的复杂度极高的低密度奇偶校验码(LDPC),在不同的信噪比条件下均能获得逼近Shannon限的性能。
[Abstract]:In order to improve the transmission capability of deep space communication system, Spinal code is used in deep space communication research.Considering the characteristics of deep space channel, such as large loss, time prolongation and dynamic time-varying, this paper studies the Spinal coding and decoding parameter combination, constellation mapping and channel operation mode selection for deep space channel.The coding and decoding parameters of Spinal codes are optimized by simulation. The performance of Spinal codes in analog and digital channels is compared and the modulation mode matching Spinal codes is given.The results show that Spinal codes have excellent application prospects in deep space communication. The short code length design of 256512bit and the Spinal code modulated by 16APSK are used in the analog channel operation mode.The performance is much better than the traditional low density parity check code (LDPCs) with high complexity, and the performance of approaching the Shannon limit can be obtained under different SNR conditions.
【作者单位】：哈尔滨工业大学深圳研究生院;
【基金】：国家自然科学基金(61371102,61201144)资助项目
【分类号】：TN911.22

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