窄带通信中基于Jordan标准型矩阵的喷泉码研究  

Performance Analysis on Fountain Code Based on Jordan Canonical Matrix in Narrowband Communication

作　　者：时琳川 徐松毅[1] 杜文举[2] SHI Lin-chuan XU Song-yi DU Wen-ju(The 54th Research Institute of CETC ,Shijiazhuang Hebei 050081 ,China Unit 69270, PLA , Kashi Xinjiang 844000, China)

机构地区：[1]中国电子科技集团公司第五十四研究所 [2]中国人民解放军69270部队

出　　处：《无线电通信技术》2017年第1期19-22,共4页Radio Communications Technology

基　　金：国家部委基金资助项目

摘　　要：针对在窄带通信系统中应用分组级喷泉码技术面临分组数量很少导致译码失败率高的问题,提出采用类Jordan标准型编码图案的编译码算法,推导了改进算法的理论译码成功率,给出了分组长度的最佳取值范围。分析比较了在窄带通信系统中应用传统ARQ机制与分组级喷泉码机制时的时延性能以及信道利用率,仿真结果证明应用分组级喷泉码机制可以提升窄带通信系统的性能。Under the condition of narrowband communication where there are less data blocks than other application scenarios,an advanced coding and decoding algorithm which is related to the normalized Jordan matrix is put forward,because less data blocks can result in decoding failure using the traditional algorithm. By analyzing the coding and decoding process, the successful percentage of decoding in theoretical derivation is proven.The optimal bit numbers in each block are given when group level fountain code is applied in narrowband communication.When ARQ and fountain code are applied in narrowband communication respectively, by analyzing the transmission delay time and the channel utilization, it is proven that the group level fountain code can improve the system performance.

关 键 词：喷泉码 ARQ JORDAN标准型 窄带通信 

分 类 号：TN911[电子电信—通信与信息系统]