摘要
为了提高跳频通信的抗干扰性能,将低密度奇偶校验(LDPC)码与跳频通信相结合。通过对编码算法中的"贪婪算法"的复杂度简化和带偏移量的分层量化译码(LBP-OMS)算法的应用,提高了码字的纠错性能。实验表明,当某些频带受强噪声干扰时,改进后的信道编译码方法提高了跳频通信的抗干扰能力。
Frequency-hopping communication was combined with the Low-Density Parity-Check（LDPC） code to improve anti-jamming performance of frequency hopping communications.By simplifying the complexity of coding algorithm in the ＂greedy algorithm＂,an offset layered quantization decoding called Layered Belief Propagation-Offset Min-Sum（LBP-OMS） algorithm was applied to improve the performance of error correction code words.The simulation results show that when certain frequency bands are covered by strong noise,the anti-interference ability of broadband frequency-hopping communications is improved by using the improved channel coding method.
出处
《计算机应用》
CSCD
北大核心
2011年第8期2037-2039,共3页
journal of Computer Applications
基金
陕西省电子信息系统综合集成重点实验室基金资助项目(2011.02.Y02)
关键词
跳频通信
宽带阻塞干扰
低密度奇偶校验码
贪婪算法
带偏移量的分层量化译码算法
frequency-hopping communication
broadband obstruction jamming
Low-Density Parity-Check（LDPC） code
greedy algorithm
Layered Belief Propagation Offset Min-Sum（LBP-OMS） algorithm
