论文部分内容阅读
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。
Reliability is an important factor restricting the widespread use of low-voltage power line carrier communications. As a public network, the safety of low-voltage distribution network communication is also getting more and more attention. The advantages and disadvantages of Orthogonal Frequency Division Multiplexing (OFDM) technology and Chaos Frequency Hopping (CFH) technology applied in power line communication are discussed based on the improvement of communication reliability and security. The feasibility of combining the two technologies is analyzed. And designs a CFH-OFDM system suitable for high-speed power line carrier communication. The system introduces chaos frequency hopping technology into Orthogonal Frequency Division Multiplexing (OFDM) encoding, improves the system’s ability to resist channel noise and improves the security of communication system. Simulation results show that this method can improve the error correction capability of system communication and ensure the reliability of communication, and provide a reference method for improving the information security of low-voltage power line carrier communication system.