|
|||||
|
|
| 基于QC-LDPC-Chebyshev混沌序列优选的CDL抗干扰研究 | |
| 引用本文： | 李思佳,毛玉泉,李波,彭卫东.基于QC-LDPC-Chebyshev混沌序列优选的CDL抗干扰研究[J].计算机测量与控制,2012,20(4):1046-1050. |
| 作者姓名： | 李思佳 毛玉泉 李波 彭卫东 |
| 作者单位： | 1. 空军工程大学电讯工程学院,陕西西安,710077 2. 空军工程大学电讯工程学院,陕西西安710077;空军工程大学陕西省电子信息系统综合集成重点实验室,陕西西安710053 3. 空军工程大学陕西省电子信息系统综合集成重点实验室,陕西西安,710053 |
| 基金项目： | 国家自然科学基金项目(60972042);陕西省电子信息系统综合集成重点实验室基金项目(201102Y05);空军工程大学研究生创新基金项目(20110301),空军工程大学电讯工程学院科研创新基金项目(DYCX1040) |
| 摘 要： | 为实现干扰条件下低信噪比的通用数据链信息可靠传输,提出了一种基于QC-LDPC和CDSSS的通用数据链协同抗干扰方案;该方案在提出单位阵取反变换的直积构造方法来生成校验矩阵的基础上,采用LU分解方案完成了QC-LDPC的编码,使用Min-Sum算法完成译码;在直序扩频系统中分析了Chebyshev混沌映射序列性能和优选方法,采用优选的混沌扩频序列提高抗干扰能力;最后通过不同干扰条件的仿真验证了方案的有效性,结果表明,协同方案比相同条件下的Mackay码字性能更优。 |
| 关 键 词： | QC-LDPC Chebyshev映射 通用数据链(CDL) |
Research on CDL Anti-jamming Based on the QC-LDPC Codes and Chebyshev Map Spread Spectrum Sequences Optimized Selection |
|
| Li Sijia , Mao Yuquan , Li Bo , Peng Weidong.Research on CDL Anti-jamming Based on the QC-LDPC Codes and Chebyshev Map Spread Spectrum Sequences Optimized Selection[J].Computer Measurement & Control,2012,20(4):1046-1050. | |
| Authors: | Li Sijia Mao Yuquan Li Bo Peng Weidong |
| Affiliation: | 1.Telecommunications Engineering Institute,Air Force Engineering University,Xi’an 710077,China; 2.Key Laboratory of Electronic System Integration of Shannxi Province,AFEU,Xi’an 710053,China) |
| Abstract: | A cooperative anti-jamming scheme of common data link(CDL) is proposed based on QC-LDPC and chaotic direct sequence spread spectrum for transmitting the data in the low SNR environment.The QC-LDPC encode is completed through the LU decomposition based on the parity check matrix.The Min-Sum algorithm is used to decode.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 Chebyshev MAP,is analyzed and their optimized selection algorithm is proposed.Finally,the scheme is verified using simulations with different jamming and results indicate that the cooperative scheme performance is better than the Mackay codes with the same conditions. |
| Keywords: | Quasi-Cyclic Low density parity Check codes(QC-LDPC) Chebyshev MAP Common Data Link |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |