FMT与OFDM系统在电力线信道下的性能研究  

Comparison of FMT and OFDM systems in power line channels

作　　者：王晨光[1] 黑勇[1] 乔树山[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《重庆邮电大学学报（自然科学版）》2012年第4期462-466,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家自然科学基金(61102072)~~

摘　　要：为了寻找适用于电力线载波通信(power line communications,PLC)系统的新调制解调方式,在电力线信道下对滤波多音调制(filtered multitone modulation,FMT)与正交频分复用(orthogonal frequency division multiplexing,OFDM)系统进行了性能比较。仿真结果表明,在给定的信道模型下,FMT系统在对抗频域脉冲噪声和窄带干扰方面优于OFDM系统,但在时域脉冲噪声下,性能比OFDM系统差。Performance of filtered muhitone modulation （FMT） system and orthogonal frequency division multiplexing （OFDM） system in the power line channel is compared in order to find a new modulation and demodulation technique suit- able for power line communications （PLC） systems. Simulation results show that under the defined channel model FMT system outperforms OFDM system in the presence of impulses in the frequency domain and narrowband interference, but OFDM system performs better in the presence of impulses in the time domain.

关 键 词：滤波多音调制(FMT) 正交频分复用(OFDM) 电力线载波通信(PLC) 

分 类 号：TN914[电子电信—通信与信息系统]