. .課程實驗報告課 程 3G移動通信實學院 通信學院專業 信息工程班級 13086911學號 13085113學生 申[實驗目的]

實驗三Okumura-Hata方法計算機仿真加深對奧村模型的理解；1/6PAGEPAGE6/6能夠使用C（Okumura-Hata比較奧村模型和Okumura-Hata方法獲得的基本傳輸損耗的差異，分析[實驗容]

Okumura-Hata方法的誤差。C（或者Matlab）利用Okumura-HataOkumura-Hata[實驗設備]/PC機[實驗步驟]采用Okumura-Hata方法分別計算大城市市區地區準平滑地形、郊區和開闊區，基站天200米，手機天線高度是3傳播損耗中值。畫出相應的曲線。將計算結果和通過奧村模型實測測得的結果進行比較，驗證計算結果的正確性。分析Okumura-Hata[實驗報告]按照要求完成實驗報告。實驗報告中要求給出采用Okumura-Hata方法分別計算大城市市2003不同傳播距離和不同載波頻率條件下的傳播損耗中值相應的曲線。并簡單分析Okumura-Hataclear;hb=200;hm=3;ford=[125103060100]f1=150:0.1:300;Lb11=69.55+26.16*log10(f1)-13.82*log10(hb)-(8.29*log10(1.54*hm).^2-1.1)+(44.9-6.55*log10(hb))*log10(d);f2=300:0.1:1920;Lb12=69.55+26.16*log10(f2)-13.82*log10(hb)-(3.2*(log10(11.75*hm)).^2-4.97)+(44.9-6.55*log10(hb))*log10(d);f=[f1f2];Lb1=[Lb11Lb12];figure(1);holdon;plot(f,Lb1,'r');endgrid;title('大城市');xlabel('頻率/MHz');ylabel('損耗中值/dB');200180160中值 140中耗損12010080

大城市0 200 400 600 800 1000 頻率/MHz

1400 1600 1800 2000clear;hb=200;hm=3;ford=[125103060100]f1=150:0.1:300;Lb11=69.55+26.16*log10(f1)-13.82*log10(hb)-(8.29*log10(1.54*hm).^2-1.1)+(44.9-6.55*log10(hb))*log10(d);Lb21=Lb11-2*(log10(f1/28)).^2-5.4;f2=300:0.1:1920;Lb12=69.55+26.16*log10(f2)-13.82*log10(hb)-(3.2*(log10(11.75*hm)).^2-4.97)+(44.9-6.55*log10(hb))*log10(d);Lb22=Lb12-2*(log10(f2/28)).^2-5.4;f=[f1f2];Lb2=[Lb21figure(1);holdon;plot(f,Lb2,'b');endgrid;title('郊區');xlabel('頻率/MHz');ylabel('損耗中值/dB');200180160中值 140中耗損12010080

郊區0 200 400 600 800 1000 頻率/MHz

1400 1600 1800 2000clear;hb=200;hm=3;ford=[125103060100]f1=150:0.1:300;Lb11=69.55+26.16*log10(f1)-13.82*log10(hb)-(8.29*log10(1.54*hm).^2-1.1)+(44.9-6.55*log10(hb))*log10(d);Lb21=Lb11-2*(log10(f1/28)).^2-5.4;Lb31=Lb11-4.78*(log10(f1)).^2+18.33*log10(f1)-40.98;f2=300:0.1:1920;Lb12=69.55+26.16*log10(f2)-13.82*log10(hb)-(3.2*(log10(11.75*hm)).^2-4.97)+(44.9-6.55*log10(hb))*log10(d);Lb22=Lb12-2*(log10(f2/28)).^2-5.4;Lb32=Lb12-4.78*(log10(f2)).^2+18.33*log10(f2)-40.98;f=[f1f2];Lb3=[Lb31figure(3);holdon;plot(f,Lb3,'g');endgrid;title('開闊區');xlabel('頻率/MHz');ylabel('損耗中值/dB');150140130120d 110值中耗 100損90807060

開闊區0 200 400 600 800 1000 頻率/MHz

1400 1600 1800 2000clear;hb=200;hm=3;ford=[125103060100]f1=150:0.1:300;Lb11=69.55+26.16*log10(f1)-13.82*log10(hb)-(8.29*log10(1.54*hm).^2-1.1)+(44.9-6.55*log10(hb))*log10(d);Lb21=Lb11-2*(log10(f1/28)).^2-5.4;Lb31=Lb11-4.78*(log10(f1)).^2+18.33*log10(f1)-40.98;f2=300:0.1:1920;Lb12=69.55+26.16*log10(f2)-13.82*log10(hb)-(3.2*(log10(11.75*hm)).^2-4.97)+(44.9-6.55*log10(hb))*log10(d);Lb22=Lb12-2*(log10(f2/28)).^2-5.4;Lb32=Lb12-4.78*(log10(f2)).^2+18.33*log10(f2)-40.98;f=[f1f2];Lb3=[Lb31figure(3); holdon; plot(f,Lb3,'g');endgr