Considering the issues such as long delay,high code error rate and easily broken links in deep space communications, the concatenation of LT code and LDPC/TPC code is studied and implemented,the principle of LT code and the main implementation method are introduced.The method of LT code concatenating with LDPC/TPC code and the Matlab simulation results are given,which is expected to provide more reliable solution for the acquisition of deep space communications data.%深空通信具有时延长、误码率大、链路易中断等特点，链路中断将导致数据不可恢复的丢失。针对深空通信误码率大、数据易丢失等特点，对LT（ Luby Transform）码与LDPC／TPC码的级联进行了研究，描述了喷泉码的原理和主要实现方法，给出了LT码与LDPC／TPC码的级联方法及Matlab仿真分析结果，实现了LT 码与 LDPC／TPC 码的级联编解码，并通过设计闪断试验测试了级联码的性能，给出了分析结果，以期为深空通信数据的获得提供更为可靠的解决方案。
展开▼
