label dots with bits - Can someone help me?
1 view (last 30 days)
Show older comments
adriane duarte
on 27 May 2021
Commented: adriane duarte
on 30 May 2021
how do i label my points?
are complex points.
My code is as follows:
clear all;
close all;
clc;
L = 1e4; % Number of bits
SNRdB = 0:28;
SNR = 10.^(SNRdB/10);
r = 10.^(SNRdB/10);
alpha = 0.3;
max_run = 100;
for sk = 1:length(SNRdB)
for tk = 1:max_run
% 1 ou -1 para sinal em fase (an)
x_inp_I = sign(rand(1,L)- 0.5);
% 1 ou -1 para sinal de quadratura (bn)
x_inp_Q = sign(rand(1,L)- 0.5);
QPSK = x_inp_I + 1i .* x_inp_Q;
% Gera bits de marca d'água aleatórios (dI)
Bit_wat_I = sign(rand(1,L)- 0.5);
% Gera bits de marca d'água aleatórios (dQ)
Bit_wat_Q = sign(rand(1,L)- 0.5);
% Outra forma de encontrar a equação
for k = 1:L
if Bit_wat_I(k) == 1 && Bit_wat_Q(k) == 1
Bit_enviado(k) = (x_inp_I(k) .* ((sqrt(1-alpha)) + (sqrt(alpha)))) + (1i .* x_inp_Q(k) * ((sqrt(1-alpha)) + (sqrt(alpha))));
end
end
end
end
h = scatterplot(QPSK);
hold on
scatterplot(Bit_enviado,[],[],'r*',h)
I would like to label it with bits like the example below:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/631580/image.png)
3 Comments
Accepted Answer
Image Analyst
on 27 May 2021
Did you try calling text()?
4 Comments
Image Analyst
on 28 May 2021
Edited: Image Analyst
on 28 May 2021
So did you try the code in my comment above (click "Show older comments" link above to see it)?
I can't run your program because
'scatterplot' requires Communications Toolbox.
You forgot to add the Communications Toolbox to the product list when you posted so I'll add it now.
More Answers (1)
Sulaymon Eshkabilov
on 27 May 2021
Edited: Sulaymon Eshkabilov
on 27 May 2021
Hi,
(1) you need to create binary representation of your plotted points using dec2bin() for labels to display on the plot
(2) to put labels to all of your plotted points, you can employ this code written by Adam Danz
https://www.mathworks.com/matlabcentral/fileexchange/46891-labelpoints
See Also
Categories
Find more on Data Type Conversion in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!