matlab分集仿真研究报告—胡梦春—.docx

分集matlab仿真实验报告学院:电子信息工程学院班级:通信1106班姓名:胡梦春学号:11211132指导教师:杨维老师时间:2014年5月27日分集MATLAB仿真报告要求现给出最大比合并(MRC)、等增益合并(EGC)和选择性合并地分集合并程序,理解各程序,:“”、“”以及“”(a)在程序中标注“注释”处加上注释(英文或中文)①%%SimulationprogramtorealizeBPSKtransmissionsystemp1EanqFDPw%*************Preparationpart***********nd=10000;%NumberofsymbolsthatsimulatesineachloopDXDiTa9E3dsnr_in_dB=[0:15];ber=zeros(1,length(snr_in_dB));forsnr_num=1:length(snr_in_dB)SNR=exp(snr_in_dB(snr_num)*log(10)/10);%*************STARTCALCULATION************nloop=100;%Numberofsimulationloopsnoe=0;%Numberoferrordatanod=0;%Numberoftransmitteddataforiii=1:nloop%*********Datageneration*************data1=rand(1,nd)>;data2=2.*data1-1;%*******AttenuationCalculation******%**********rayleighchannel******code_rate=1;E=1;sigma=E/sqrt(2*SNR*code_rate);n=[randn(1,nd)+j*randn(1,nd)];h1=1/sqrt(2)*[randn(1,nd)+j*randn(1,nd)];%RayleighchannelRTCrpUDGiTdata41=data2.*h1+sigma.*n;h11=conj(h1);%注释:取h1地共轭data411=data41.*h11;%注释:最大比值合并,每条支路加权系数与本条支路信号幅度成正比5PCzVD7HxA%***********************n=[randn(1,nd)+j*randn(1,nd)];h2=1/sqrt(2)*[randn(1,nd)+j*randn(1,nd)];%RayleighchanneljLBHrnAILgdata42=data2.*h2+sigma.*n;h22=conj(h2);data422=data42.*h22;%*********data4=data411+data422;%注释:将加权后地各支路信号进行合并%*********BPSKDemodulation*******demodata1=data4>0;%**********BitErrorRate(BER)*******noe2=sum(abs(data1-demodata1)); nod2=length(data1); noe=noe+noe2; nod=nod+nod2;end%**********Outputresult***********ber(snr_num)=noe/nodend;%*********endoffile************figure;semilogy(snr_in_dB,ber,'O-')%注释:画出实际误码率曲线holdonsemilogy(snr_in_dB,*erfc(sqrt(2*10.^(snr_in_dB/10))/sqrt(2)),'+-');%注释:画出高斯信道理论误码率曲线xHAQX74J0Xholdonsemilogy(snr_in_dB,.*(1-sqrt((10.^(snr_in_dB/10))./(10.^(snr_in_dB/10)+1))),'-');%注释:画出瑞利信道理论误码率曲线LDAYtRyKfEylabel('BER');xlabel('E_b/N_0[dB]');legend('simulationBPSKMRCL=2','theorygngaussBPSK','theoryreyleigh');Zzz6ZB2Ltk%%%%%%%%%%%%%%%%%②%%Simulationprogramtor