Binary value conversion.

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Noman Abir 2021-1-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/707043-binary-value-conversion

评论： Noman Abir 2021-1-5

采纳的回答： Image Analyst

I have a binary sequence like this :

01011001

01010110

01010010

01001111

01001100

01010010

01011001

How can I convert all the 0 values to -1..? 1 values will be 1 as well.

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John D'Errico 2021-1-2

Please. There was no reason to ask the same question twice.

Noman Abir 2021-1-2

The network issue. That's why it submitted twice. sorry.

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采纳的回答

Image Analyst 2021-1-2

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/707043-binary-value-conversion#answer_589248

在 MATLAB Online 中打开

mask = yourSequence == 0; % Find all 0s
yourSequence(mask) = -1; % Convert 0s to -1s.

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Image Analyst 2021-1-2

在 MATLAB Online 中打开

Try this if you want a number out instead of a string:

clc;    % Clear the command window.
close all;  % Close all figures (except those of imtool.)
clear;  % Erase all existing variables. Or clearvars if you want.
workspace;  % Make sure the workspace panel is showing.
format short g;
format compact;
fprintf('Beginning to run %s.m ...\n', mfilename);
bit=8;
levels=256;
Fs=8000;
t=0:1/Fs:(10-1)/Fs;
x = [-0.52, 1.2, 1.65, -1.99, -0.8, 1.96, 1.32, 0.76, 0, 0.01];
% stairs(t,x);
title('Sample values stairs version figure');
max_x = 2;
min_x = -2;
step=(max_x-min_x)/levels;
lowest_level=min_x+(step/2);
highest_level=max_x-(step/2);
level=lowest_level:step:highest_level;
level_number=ceil((x-min_x)/step);
quantized_value=level(level_number);
encoded = x/quantized_value*level_number;
z = dec2bin(encoded)
[rows, columns] = size(z);
for row = 1 : rows
	for col = 1 : columns
		if z(row, col) == '1'
			num(row, col) = 1;
		else
			num(row, col) = -1;
		end
	end
end
num

You'll get:

z =

10×8 char array

'01011110'

'11001100'

'11101001'

'00000000'

'01001100'

'11111101'

'11010100'

'10110000'

'01111111'

'10000000'

num =

-1 1 -1 1 1 1 1 -1

1 1 -1 -1 1 1 -1 -1

1 1 1 -1 1 -1 -1 1

-1 -1 -1 -1 -1 -1 -1 -1

-1 1 -1 -1 1 1 -1 -1

1 1 1 1 1 1 -1 1

1 1 -1 1 -1 1 -1 -1

1 -1 1 1 -1 -1 -1 -1

-1 1 1 1 1 1 1 1

1 -1 -1 -1 -1 -1 -1 -1

Noman Abir 2021-1-4

Thank you. I have got my solution.

Noman Abir 2021-1-5

I need some more help from you @Walter Roberson & @Image Analyst.

I have added 2 different MATLAB files where "receive_cdm.m" is my main code and "y_send.mat" is a file I am getting some values from it and loaded it in main code section.

If you look at the code then I have assigned 1 parameter c1. Forget about other parameters.

The following tasks are explained in the code.

I have done it with proper MATLAB commands and equations.

But, I am getting error when I calculate it manually and matching it with MATLAB calculations. (What I should get and what I am getting from MATLAB)

Can anyone check my code, please..?

It would be very helpful for me.

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MATLAB Language Fundamentals Data Types Data Type Conversion

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