[英]Plot an eye diagram of a signal in MatLab
The matrix X contained in a .mat file represents the acquired signal. .mat文件中包含的矩阵X表示获取的信号。 The element of place (i, j) of the matrix is the i-th sample of the j-th screen.
矩阵的位置(i,j)的元素是第j个屏幕的第i个样本。 The sampling frequency is equal to 4 GS/s.
采样频率等于4 GS / s。 How do I plot the eye diagram relative to the signal contained in X using MatLab?
如何使用MatLab相对于X中包含的信号绘制眼图? I tried but I could not draw the eye diagram from the matrix X (see http://ge.tt/8Xq5SYh/v/1?c ).
我尝试过,但无法从矩阵X绘制眼图(请参阅http://ge.tt/8Xq5SYh/v/1?c )。 Here is the link to the matrix X that I used:
这是我使用的矩阵X的链接:
http://ge.tt/8Xq5SYh/v/0 http://ge.tt/8Xq5SYh/v/0
and my MatLab code: 和我的MatLab代码:
%sampling frequency fs=4 GS/s
rows=4000; %4000 rows (samples) |__ in matrix X
columns=10; %1000 columns (screens) |
%for plot all the graphics in the same window (overlapping)
hold on;
%index of the single row (column for the single column)
row=1:1:100;
t=1:1:100;
for column=1:columns,
%plot
plot(t,X(row, column),'-bo','LineWidth',1, 'MarkerEdgeColor','b', 'MarkerFaceColor','b', 'MarkerSize',2);
end
%axis properties
set(gca,'YTick', [-0.5 -0.45 -0.4 -0.35 -0.3 -0.25 -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5]); %soli valori di ascisse da visualizzare
grid on;
set(gca,'GridLineStyle','-');
axis([0 10 -0.5 0.5]);
Someone could try to show me how to do? 有人可以告诉我该怎么做? maybe the matrix is not correct?
也许矩阵不正确?
Thanks in advance to anyone who answers 预先感谢任何回答的人
You can simply plot(x,'b')
. 您可以简单地
plot(x,'b')
。 The plot command will draw a line for every column of x
, which corresponds to all the samples of each "screen". plot命令将为
x
每一列绘制一条线,该线对应于每个“屏幕”的所有样本。 The 'b'
in the command is just to make every line the same color like a typical eye diagram. 命令中的
'b'
只是使每条线具有与典型眼图相同的颜色。
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