计算机工程与应用2012，Vol.48Issue(31)：125-130,6.DOI:10.3778/j.issn.1002-8331.2012.31.028
NBJ抑制的QC-LDPC协同混沌DSSS方案
Cooperated NBJ suppression scheme based on QC-LDPC codes and chaotic DSSS
摘要
Abstract
A cooperated narrow-band jamming suppression scheme is proposed based on Quasi-Cyclic Low Density Parity Check codes (QC-LDPC) and chaotic direct sequence spread spectrum for improving the data transmitting in the low SNR with the different jamming. The QC-LDPC encodes are designed through the Moore-Penrose inverse and the full rank decomposition based on the parity check matrix. The inverse transform for identity matrix and direct product are used for constructing the parity check matrix. The performance of chaotic spread spectrum sequences, produced from improved Logistic MAP, is analyzed and verified by simulations. Simulation results demonstrate that the scheme can bring 8.2 dB SNR gain comparing to current standard when the jamming-to-signal ratio is 20 dB.关键词
准循环低密度奇偶校验码(QC-LDPC)/直接序列扩频(DSSS)/Moore-Penrose逆/改进型Logistic映射/通用数据链Key words
Quasi-Cyclic Low Density Parity Check codes (QC-LDPC)/ Direct Sequence Spread Spectrum (DSSS)/Moore-Penrose inverse/ improved Logistic MAP/ Common Data Link(CDL)分类
信息技术与安全科学引用本文复制引用
李思佳,毛玉泉,李波,郑秋容..NBJ抑制的QC-LDPC协同混沌DSSS方案[J].计算机工程与应用,2012,48(31):125-130,6.基金项目
国家自然科学基金(No.60802053) （No.60802053）
陕西省电子信息系统综合集成重点实验室基金(No.201102Y05) （No.201102Y05）
空军工程大学电讯工程学院博士启动基金(No.DG080806) （No.DG080806）
空军工程大学电讯工程学院科研创新基金(No.DYCX1040). （No.DYCX1040）
