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电力线通信是利用电力线,通过载波方式将模拟或数字信号进行高速传输的技术。文中从电力线的物理特性出发,分析了自适应OFDM技术和Turbo码的优缺点,提出将基于Turbo码的自适应OFDM技术用于高速电力线通信环境。通过理论分析和实验仿真表明,采用Turbo码的自适应OFDM技术,大大地增加了系统的抗干扰、抗衰落特性,从而提高了电力线通信系统的传输速度和通信质量。
Power line communication is the use of power lines, through the carrier mode of analog or digital signals for high-speed transmission technology. In this paper, based on the physical characteristics of power line, the advantages and disadvantages of adaptive OFDM and Turbo codes are analyzed, and the adaptive OFDM based on Turbo codes is proposed for high-speed power line communication environment. Theoretical analysis and experimental simulation show that the adaptive OFDM technology using Turbo codes greatly increases the anti-jamming and anti-fading characteristics of the system, thereby improving the transmission speed and communication quality of the power line communication system.