阻塞式干扰环境下LDPC编码跳频通信优化方案  

Optimizing of LDPC Coded Frequency-hopping Communication Over Blocking Interference

作　　者：刘士平[1] 马林华[1,2] 孙康宁[1] 胡星[1] 黄天宇[1] LIU Shi-ping;MA Lin-hua;SUN Kang-ning;HU Xing;HUANG Tian-yu(School of Aeronautics and Astronautics Engineering ,Air Force Engineering University,Xi’an 710038,China;State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710071,China)

机构地区：[1]空军工程大学航空航天工程学院,西安710038 [2]西安电子科技大学综合业务网国家重点实验室,西安710071

出　　处：《火力与指挥控制》2019年第2期32-36,40,共6页Fire Control & Command Control

基　　金：国家自然科学基金(61472442);综合业务网国家重点实验室(西安电子科技大学)开放研究基金资助项目(INS-15-13)

摘　　要：为进一步提升阻塞式干扰环境下跳频通信系统的抗干扰能力,在信道估计良好的情况下,利用混合信道下优化的低密度奇偶校验码(LDPC)度序列对跳频通信系统进行了改进。仿真验证2048码长、0.5码率在40%删除概率度优化序列下的性能较高斯信道下优化度序列性能在10-5误码率下提升0.62 dB。并针对实际作战使用问题提出了一种低复杂度的折中的使用方案。In order to further improve the anti-interference ability of frequency-hopping communication system over blocking interference.Under the well channel estimation,the frequencyhopping communication system has been improved by the optimizing degree sequences of LDPC codes over mixed channel.It has been proved by simulation that the performance of the codes in which 2048 code length and 0.5 code rate improves 0.62 dB under the optimizing degree sequences of erasure probabilities than that over the Gaussian channel by the error rate of 10^-5.It also provides a less complicated compromise proposal aiming at its use in actual fight.

关 键 词：阻塞式干扰 低密度奇偶校验码 混合信道 跳频通信 

分 类 号：TN914.41[电子电信—通信与信息系统]