高技术通讯2018，Vol.28Issue(2)：121-127,7.DOI:10.3772/j.issn.1002-0470.2018.02.004
深空通信的级联码方案研究
Research on a concatenated code scheme for deep space communication
摘要
Abstract
In view of the problem that traditional Luby transform-low density parity check(LT-LDPC)codes can not ef-fectively solve the communication interrupt and the higher communication bit error rate of deep space communica-tions,this study uses the weak robust soliton distribution and the improved belief propagation algorithm to optimize LT codes to create improved LT(ILT)codes,and then,combins the ILT codes with LDPC codes to form ILT-LD-PC codes and applies them to deep space communications.By deep space simulation,the performance of LT-LDPC codes and ILT-LDPC codes is compared from the two aspects of decoding efficiency and decoding overhead,and al-so from the bit error rate and the outage probability.The simulation shows that compared with LT-LDPC codes, ILT-LDPC codes have higher decoding efficiency and lower decoding overhead, and the communication bit error rate is lower,while the threshold of signal to noise ratio is higher.Therefore,concatenated codes can improve the reliability of deep space communication data.关键词
深空通信/ILT-LDPC码/译码效率/译码开销/误码率/中断概率Key words
deep space communication/ILT-LDPC code/decoding efficiency/decoding overhead/bit error rate/outage probability引用本文复制引用
张勋,曹阳,彭小峰,任发韬,陈果,罗运桓..深空通信的级联码方案研究[J].高技术通讯,2018,28(2):121-127,7.基金项目
国家自然科学基金(61205106),重庆市教委科学技术项目(KJ1709205)和重庆市教委科学技术项目(KJ1500934)资助. （61205106）
