Predistortion of high speed optical OFDM signal for aliasing-free receiving in multiple low-bandwidth receiver system  

作　　者：程林 闻和 郑小平 张汉一 郭奕理 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics/Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University

出　　处：《Chinese Optics Letters》2010年第4期377-380,共4页中国光学快报（英文版）

基　　金：supported in part by the National"863"Project of China under Grant No.2009AA01Z222

摘　　要：A cost-effective method of multi-receiver optical orthogonal frequency-division multiplexing（OOFDM） system is proposed to reduce the requirement for the speed of the receiver and the size of fast Fourier transform（FFT）.The sampling rate of analog-to-digital converters（ADCs） can be reduced to 1/N of the original signal bandwidth in an N-receiver system.Aided by signal predistortion at the transmitter, aliasing-free signal can be retrieved independently and directly at the low speed receivers.A back-to-back experimental result is given for a two-receiver system.The effect of the electrical filters added before the ADC is studied and the analysis for filters optimization is given.A cost-effective method of multi-receiver optical orthogonal frequency-division multiplexing（OOFDM） system is proposed to reduce the requirement for the speed of the receiver and the size of fast Fourier transform（FFT）.The sampling rate of analog-to-digital converters（ADCs） can be reduced to 1/N of the original signal bandwidth in an N-receiver system.Aided by signal predistortion at the transmitter, aliasing-free signal can be retrieved independently and directly at the low speed receivers.A back-to-back experimental result is given for a two-receiver system.The effect of the electrical filters added before the ADC is studied and the analysis for filters optimization is given.

关 键 词：Cost reduction Fast Fourier transforms Orthogonal frequency division multiplexing 

分 类 号：TN919.3[电子电信—通信与信息系统]