# Wireless channel modeling: Error using plot Specify the coordinates as vectors or matrices of the same size, or as a vector and a matrix that share the same length in at least

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Sylvester on 18 Jun 2024
Commented: Umar on 15 Aug 2024 at 23:32
betaTT=90; %
betaRR=90;
Ft_max=570;
Fr_max=570;
alphavT=0;
alphavR=0;
kappa=0;
Ut=45;
tau=0;
Freq_diff=0;
D=300;
Rt=40;
Fc=5.9*10^9;
C=3*10^8;
deltaT=2;
N=20;
% Conversion from degree to radian
betaT=(2*pi*betaTT)/360;
betaR=(2*pi*betaRR)/360;
alpha_0=(2*pi*Ut)/360;
lamda=0.15;
deltaR=linspace(0,2.5,200);
% CF_SB1=zeros(length(deltaT),length(deltaR));
% lambda=(Fc/C);
change_inT=40/300;
alphaT=linspace(-pi,pi,200);
% alphaT=zeros(1,length(alphaT));
for i=1:length(alphaT)
% if (alphaT(i)>-pi)&(alphaT(i)<=pi)
alphaR(i)=pi-(change_inT*sin(alphaT(i)));
end
for b=1:length(deltaR);
% for c=1:length(deltaT);
O=deltaT*cos(alphaT-betaT);
Q=deltaR(b).*cos(alphaR(i)-(betaR));
CF_SB1(b)=(1/(2*pi*besseli(0,kappa)))*trapz(alphaT,exp(sqrt(-1)*2*pi)*(Q+O));
end
figure(1)
plot(deltaR,real(CF_SB1),'--g');
set(0,'DefaultAxesFontSize',18);
##### 16 CommentsShow 14 older commentsHide 14 older comments
Umar on 15 Aug 2024 at 23:30
Hi @Walter Robertson,
Thank you for your kind words regarding the formatting of my code blocks. I appreciate your feedback and am glad to know that the changes have made a positive impact. You have made a lot of contributions over the past years, helped a lot of OPs resolving their complex problems, appreciate others help such as @DGM, @Torsten, @Cyclist, @Star Strider, @Chris La Pierre, @john D Errico, @dpb etc, all of you have given excellent tips by sharing your knowledge and I am really greatful for it.
Umar on 15 Aug 2024 at 23:32
Hi @Sylvester,
Thank you for your kind message. I am pleased to hear that our discussion was helpful to you. It is completely understandable to feel overwhelmed at times, and I appreciate your openness in sharing your concerns. I sincerely hope that you are able to enjoy a restful night’s sleep soon. Should you have any further questions or need additional support, please do not hesitate to reach out. Wishing you all the best.

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