OFDM电力线通信系统抗噪性能分析  

Analysis of noise immunity performance of OFDM power line communication

作　　者：郑雪娇[1] 焦键[1] 

机构地区：[1]重庆科创职业学院机电学院,重庆永川402160

出　　处：《重庆文理学院学报（社会科学版）》2014年第5期62-65,共4页Journal of Chongqing University of Arts and Sciences（Social Sciences Edition)

摘　　要：基于电力线通信(PLC)系统的实测噪声,分析OFDM系统的电力线通信系统性能.通过Matlab和嵌入数字信号处理(DSP)系统进行虚拟发送和接收,在传输信道中加入噪声(加性白高斯噪声、电力线有色背景噪声等)仿真操作来干扰发送信号,以达到系统性能分析的目的.同时,在OFDM系统中分析卷积编码的前向纠错(FEC)的应用.结果表明,低阶调制可使系统性能改善,前向纠错技术通过解码可以自动纠正传输误码,降低接收信号的误码率(BER).Based on actual measurement noise of power line communication（ PLC）system,the performance of OFDM power line communication was analyzed. Matlab and embedded digital signal processing（ DSP） systems were used to simulate the operation of virtual transmitter and receiver. The performance of the system design is then analyzed by adding noise（ additive white Gaussian noise and Power line colored background et al. ）in an attempt to corrupt the signal. In the paper,it’s also analyzed the application of forward error correction（ FEC）. The results show that lower order modulation can improve the performance,and FEC technology can reduce the error rate（ BER）of received signal by decoding automatically correct transmission errors.

关 键 词：数字通信 OFDM 电力线通信( PLC) 调制技术 前向纠错( FEC) 

分 类 号：TN915.853[电子电信—通信与信息系统]