can you explain someone, how to create a channel matrix for visible light communication
6 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Porkodi S
am 2 Feb. 2018
Beantwortet: abdullah qasim
am 9 Dez. 2019
i don't know,how to develope the channel matrix for visible light communication. but i know the channel matrix of normal awgn channel,rayleigh and rician channel.
Akzeptierte Antwort
Abhishek Ballaney
am 5 Feb. 2018
https://in.mathworks.com/help/phased/ref/scatteringchanmtx.html
0 Kommentare
Weitere Antworten (1)
abdullah qasim
am 9 Dez. 2019
clear
clc
theta=70;
% semi-angle at half power
m=-log10(2)/log10(cosd(theta));
%Lambertian order of emission
P_total=2000;
%transmitted optical power by individual LED
Adet=1e-4;
%detector physical area of a PD
Ts=1;
%gain of an optical filter; ignore if no filter is used
index=1.5;
%refractive index of a lens at a PD; ignore if no lens is used
FOV=60*pi/180;
%FOV of a receiver
G_Con=(index^2)/sin(FOV);
%gain of an optical concentrator; ignore if no lens is used
lx=5; ly=5; lz=3;
% room dimension in metre
h=2.15;
%the distance between source and receiver plane
%[XT,YT]=meshgrid([?1.25 1.25],[?1.25 1.25]);
XT=0; YT=0;
% position of LED;
Nx=lx*10; Ny=ly*10;
% number of grid in the receiver plane
x=-lx/2:lx/Nx:lx/2;
y=-ly/2:ly/Ny:ly/2;
[XR,YR]=meshgrid(x,y);
% receiver plane grid
D1=sqrt((XR-XT(1,1)).^2+(YR-YT(1,1)).^2+h^2);
% distance vector from source 1
cosphi_A1=h./D1;
% angle vector
H_A1=(m+1)*Adet.*cosphi_A1.^(m+1)./(2*pi.*D1.^2);
% channel DC gain for source 1
P_rec=P_total.*H_A1.*Ts.*G_Con;
% received power from source 1;
P_rec_dBm=10*log10(P_rec);
surfc(x,y,P_rec_dBm);
% contour(x,y,P_rec_dBm);hold on
%mesh(x,y,P_rec_dBm);
%meshc(x,y,P_rec_dBm);
xlabel('X (m)');
ylabel('Y (m)');
zlabel('Received power (dBm)');
axis([-lx/2 lx/2 -ly/2 ly/2 min(min(P_rec_dBm)) max(max(P_rec_dBm))]);
0 Kommentare
Siehe auch
Kategorien
Mehr zu Optics finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!