基于混沌跳频的电力线交织编码技术

可靠性是制约低压电力线载波通信广泛应用的一个重要因素。作为公用网络，低压配电网通信的安全性也日益受到关注。从提高通信可靠性和安全性出发，论述了正交频分复用（OFDM）技术和混沌跳频（CFH）技术在电力线通信上应用的优缺点，分析了2种技术结合的可行性，提出并设计一种适合高速电力线载波通信的CFH-OFDM系统。该系统将混沌跳频技术引入正交频分复用的编码中，提高了系统抗信道噪声的能力，并改进了通信系统的安全性。仿真实验表明，该方法可以提高系统通信的纠错能力，保证通信的可靠性，并为提高低压电力线载波通信系统的信息安全提供一种值得借鉴的方法。

Interleaved Technique for Power Line Communication Based on Chaotic Frequency Hopping

The reliability of power line communication (PLC) is the most important factor that limits the application of PLC in practice. For the public network, the communication security of the low-voltage network has become an issue of growing concern. The advantages and the disadvantages of orthogonal frequency division multiplexing (OFDM) and chaotic frequency hopping (CFH) applied in PLC are discussed in the light of communication reliability and security, and the feasibility of the CFH-OFDM system that combines OFDM and CFH is briefly analyzed. A CFH-OFDM system is put forward and designed, which is applicable to high speed communication in low-voltage networks. The system introduces the CFH into the coding system of OFDM, which can improve the system performance of anti-jamming and the security of communication system. Simulation results show that the CFH-OFDM can improve the correcting ability and the reliability of PLC while providing a method for improving the information security of the low power line communication system.