现代无线通信原理实验

1、现代无线通信原理实验14实验Okumura-无模型仿真实验一实验内容模d=2km5km，现代无线通信原理实验14实验Okumura-无模型仿真实验一实验内容模d=2km5km，实验要求在一个图中显示 6 条曲线；所有曲线均为蓝色线，d=2km 用实线（MHz（dB二实验仿真图三实验分析四附录Okumura-模型路径损耗计算公式 工作频率天线有效高度（ m 天线和移动台天线之间的水平距离 实验源程序clear fc=300:100:1500; d1=2; (dB)6955616logf13.82logh(h)(44.96.55ogh)ogd四附录Okumura-模型路径损耗计算公式 工作频率天线

2、有效高度（ m 天线和移动台天线之间的水平距离 实验源程序clear fc=300:100:1500; d1=2; (dB)6955616logf13.82logh(h)(44.96.55ogh)ogd0 中城市(1.11log .7)h(1.6logf(hC 228) c 5.郊区cpc2 tetecell )21.54h)11(f300MHz2c城市、郊区、 4.78(logf)log40.98c )7()d2=5; ht=30; 天线高度hr=1.5; %移动台天线高度lp1=69.55+26.16*log10(fc)-13.82*log10(ht)+(44.9-plot(fc,lp1,

3、-bo); %城市 蓝色线圆圈 grid hold plot(fc,lp2,-b*); %郊区 蓝色实线星号 plot(fc,lp3,-bs);%农村 蓝色实线方框 xlabel(频率ylabel(损耗中值：， 班级学号：52121429lp12=69.55+26.16*log10(fc)-13.82*log10(ht)+(44.9-d2=5; ht=30; 天线高度hr=1.5; %移动台天线高度lp1=69.55+26.16*log10(fc)-13.82*log10(ht)+(44.9-plot(fc,lp1,-bo); %城市 蓝色线圆圈 grid hold plot(fc,lp2,-

4、b*); %郊区 蓝色实线星号 plot(fc,lp3,-bs);%农村 蓝色实线方框 xlabel(频率ylabel(损耗中值：， 班级学号：52121429lp12=69.55+26.16*log10(fc)-13.82*log10(ht)+(44.9-plot(fc,lp12,:o);plot(fc,lp22,:*);plot(fc,lp32,:s);%legend(d=2km, 郊区 d=2km, 农村 d=2km,d=5km,提高实验实验仿真图clear L1=69.55+26.16*log10(f)-13.82*log10(ht)+(44.9-)-C1=-2*log10(f/28)

5、.2-C2=-4.78*log10(f).2+18.33*log10(f)-grid plot(d,L1,-clear L1=69.55+26.16*log10(f)-13.82*log10(ht)+(44.9-)-C1=-2*log10(f/28).2-C2=-4.78*log10(f).2+18.33*log10(f)-grid plot(d,L1,-plot(d,L3,-plot(d,L5,-实验源程序legend(300MHZ,郊区:300MHZ,乡村：班级：学号xlabel(距离ylabel(损耗中值实验地面反射和绕射对微的影响实验一实验内容实验条件相对legend(300MHZ,郊

6、区:300MHZ,乡村：班级：学号xlabel(距离ylabel(损耗中值实验地面反射和绕射对微的影响实验一实验内容实验条件相对二实验仿真图三实验分析 四附录刃形绕射因0v反射损耗公式实验源程序clear for hcF1 =- )2201.v02L四附录刃形绕射因0v反射损耗公式实验源程序clear for hcF1 =- )2201.v02L(.38)vh V 22c rrc1dFv21if 1=hcF1*sqrt(2) -2.4=(hcF1)*sqrt(2)&(hcF1)*sqrt(2)=-VdB2=20*log10(0.4-(0.1184-VdB2=20*log10(-hold gri

7、d if 1=hcF1*sqrt(2) -2.4=(hcF1)*sqrt(2)&(hcF1)*sqrt(2)=-if 1=hcF1*sqrt(2) -2.4=(hcF1)*sqrt(2)&(hcF1)*sqrt(2)=-VdB2=20*log10(0.4-(0.1184-VdB2=20*log10(-hold grid if 1=hcF1*sqrt(2) -2.4=(hcF1)*sqrt(2)&(hcF1)*sqrt(2)=-VdB2=20*log10(0.4-(0.1184-VdB2=20*log10(-hold grid set(gca,ytick,-40 -30 -20 -10 6 grid set(gca,xtick,-1-0.5 0 0.5 0.577 1 1.414 1.5 2 grid text(0.577,-55,0.577);text(1.414,-text(-0.4,-6,绕射区);text(0.9,-hold grid set(gca,ytick,-40 -30 -20 -10 6 grid se