电波科学学报2011，Vol.26Issue(3)：458-465,8.
低密度奇偶校验码差分跳频系统的抗干扰性能
Anti-jamming performance of low-density parity-check coded differential frequency hopping systems
摘要
Abstract
Based on the anti-jamming performance study of uneoded differential fre- quency hopping（DFH）systems, this paper introduces low-density parity-check（LD- PC）codes to the DFH systems and investigates the improvements against partial- band jamming. When exact jammer state information（JSI）is available, irregular LD- PC codes are optimized with respect to different jamming factors. The cycle-free asymptotic ensemble average bit error rate（BER）is given and the anti-jamming performance of optimized LDPC codes and regular LDPC codes are simulated. Results show that when exact JSI is available, the anti-jamming performance of optimized LDPC coded DFH systems is obviously superior to that of the regular LDPC coded and uncoded DFH systems. When JSI is unavailable, a joint JSI estimation and decoding algorithm is proposed. Simulation results show that this algorithm provides robust anti-jamming performance even without JSI.关键词
差分跳频/部分频带干扰/LDPC码/干扰状态估计Key words
differential frequency hopping/partial-band jamming/LDPC codes/jammer state estimation分类
信息技术与安全科学引用本文复制引用
朱毅超,甘良才,熊俊俏..低密度奇偶校验码差分跳频系统的抗干扰性能[J].电波科学学报,2011,26(3):458-465,8.基金项目
国家自然科学基金资助项目 （）
