【摘要】 提出了一种正交频分复用 (OFDM)信号发送器的模型和设计方法 ,并用该装置在一个室内环境中进行实验测量 ,寻找合适的OFDM参数。为了研究OFDM信号在低压电力线上的传输情况 ,运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。试验结果表明 ,就通信速率而言 ,低压电力线载波通信是一种很有潜力的通信方式更多还原

【Abstract】 A model and a complete design methodology of OFDM transmitter for power line communication are proposed. Some experimental measurements have been performed in residential environments to find proper physical layer parameters of PLC OFDM. The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network. The results indicate that PLC is a potential solution for high speed communications.更多还原