A Novel Non-Equidifferent Optical APPM Mapping Scheme for Strong Turbulent Atmospheric Channel

查看全文 作　　者：WANG [1,2]Kaimin;ZHANG [1,2]Lijia;LIU [1,2]Bo;ZHANG [1,2]Qi;TIAN [1,2]Qinghua;XU [3]Peng;XIN [1,2]Xiangjun 机构地区：[1]School of Electronic Engineering;[2]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications(BUPT);[3]Shandong Police Training College 出　　处：《China Communications》索引2015年第12卷第3期,共8页 基　　金：financial supports from National High Technology 863 Program of China(No.2012AA011304);National International Technology Cooperation(No.2012DFG12110);National NSFC(No.61275158/61201151/61275074);Beijing Nova Program( No.Z141101001814048);Beijing Excellent Ph.D.Thesis Guidance Foundation(No.20121001302);the Universities Ph.D.Special Research Funds(No.20120005110003);the Fundamental Research Funds for the Central Universities with No.2014RC0203;Fund of State Key Laboratory of IPOC(BUPT) 摘　　要：An optical Amplitude and Pulse Position Modulation(APPM) mapping scheme for strong turbulent atmospheric channel is proposed to optimize Bit Error Rate(BER) performance.In this scheme,a nonequidifferent amplitude series is designed based on quantitative BER analysis of the specific A×M APPM demapping procedures containing time slot selection and amplitude decision in selected time slot,which are different from traditional ones.Simulation results of 4×4,4×8 and 4×16 APPM show 4,3.4 and 6.9 d B SNR gain against traditional APPM scheme respectively.Thus significant BER performance improvement is achieved which helps to enhance reliability of freespace optical communication systems. 关 键 词：解映射 强湍流 大气通道 脉冲位置调制 性能改进 信噪比增益 光通信系统 BER