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label dots with bits - Can someone help me?

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adriane duarte
adriane duarte 2021-5-27
评论： adriane duarte 2021-5-30
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:
  3 个评论
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Adam Danz
Adam Danz 2021-5-27
Where do the binary values come from? How are they related to the points?
adriane duarte
adriane duarte 2021-5-30
the random bits are produced through the variables:x_inp_I,x_inp_Q,Bit_wat_I and Bit_wat_Q.
then I use it in an equation to reproduce my complex points.

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采纳的回答

Image Analyst
Image Analyst 2021-5-27
Did you try calling text()?
  4 个评论
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Image Analyst
Image Analyst 2021-5-28
编辑：Image Analyst 2021-5-28
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.
adriane duarte
adriane duarte 2021-5-30
编辑：adriane duarte 2021-5-30
Oi!!!
Eu testei seu código sim!
obrigado.
Você poderia me ajudar com outra pergunta? @Image Analyst

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更多回答（1 个）

Sulaymon Eshkabilov
编辑：Sulaymon Eshkabilov 2021-5-27
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

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