跻身未来的电力线通信 (四)宽带PLC的W-OFDM实现

PREDICTIVE SCHEMES FOR FUTURE POWER LINE COMMUNICATION

鉴于电力线通信 ( PLC)的宽带需求 ,提出了运用正交频分复用 ( OFDM)实现宽带 PLC的方案。结合 PLC信道的复杂特性 ,在阐述 OFDM调制原理及分析研究 OFDM的宽带性能之后 ,构建了一个工程实现框架 ,并以此作为 OFDM系统的计算机仿真模型。由 MATLAB仿真所得结果 ,得出了 OFDM技术应用所遇到的高功率峰均值比 ( PAPR)值和同步问题的具体解决措施。最后以Intellon公司的 INT5 1 30芯片应用为例 ,给出了一个与 PC机 USB接口相连的、基于 OFDM调制技术的宽带电力

Due to the broad band requirement of PLC, the OFDM modulation technology is brought forward in this paper. Combined with the complex characteristics of the PLC channel, an available engineering framework is constructed after elaborating the OFDM modulation principle and analyzing the broad band performance of OFDM technology. Based on this OFDM PC model, the result of the MATLAB simulation gives the idiograph method to reduce downlink of high peak to average power ratio (PAPR) and difficult synchronization. A broad band power line USB port Modem using OFDM technology is designed with the application of INT5130 chip.[KH2D]