现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
14期
11-13,17
,共4页
光正交频分复用%幅度相移键控%正交幅度调制%光通信
光正交頻分複用%幅度相移鍵控%正交幅度調製%光通信
광정교빈분복용%폭도상이건공%정교폭도조제%광통신
O-OFDM%APSK%QAM%optic communication
基于Optisystem和Matlab软件构建相干解调光正交频分复用（CO-OFDM）系统仿真平台。从O-OFDM的调制出发，在Optisystem中用幅度相位键控（APSK）调制代替现在主流使用的方形正交振幅调制（QAM）。分析APSK调制在光通信中的优越性，并将得到的仿真星座图、误码率、线宽与QAM调制下的结果相互对比，从而区分APSK调制比QAM调制优越性并总结规律。
基于Optisystem和Matlab軟件構建相榦解調光正交頻分複用（CO-OFDM）繫統倣真平檯。從O-OFDM的調製齣髮，在Optisystem中用幅度相位鍵控（APSK）調製代替現在主流使用的方形正交振幅調製（QAM）。分析APSK調製在光通信中的優越性，併將得到的倣真星座圖、誤碼率、線寬與QAM調製下的結果相互對比，從而區分APSK調製比QAM調製優越性併總結規律。
기우Optisystem화Matlab연건구건상간해조광정교빈분복용（CO-OFDM）계통방진평태。종O-OFDM적조제출발，재Optisystem중용폭도상위건공（APSK）조제대체현재주류사용적방형정교진폭조제（QAM）。분석APSK조제재광통신중적우월성，병장득도적방진성좌도、오마솔、선관여QAM조제하적결과상호대비，종이구분APSK조제비QAM조제우월성병총결규률。
A system simulation platform of CO-OFDM (coherent detection optical orthogonal frequency division multiplex-ing)was established on the basis of the softwares Optisystem and Matlab. Starting from the O-OFDM(optical orthogonal frequen-cy division multiplexing)modulation,APSK(amplitude and phase shift keying)modulation was adopted in the software Optisys-tem to replace the square QAM(quadrature amplitude modulation)modulation that is prevalently used in the software Optisys-tem and Matlab. The the advantages of APSK in optical communication is analyzed. The constellation graph,BER and linewidth getting from the simulating results are compared with the results from QAM,so as to determine the superiority of APSK modula-tion which is better then QAM modulation. The relative law is summarized.
