can anyone suggest me how to convert binary value to gray code value??

i would also like to know if you can provide me with the reverse conversion code of gray to binary value...thank you in advance.. :)

[Image Analyst]

Answer 1

[Image Analyst]

In the Communications Systems Toolbox:

bin2gray

Convert positive integers into corresponding Gray-encoded integers

Syntax y = bin2gray(x,modulation,M) [y,map] = bin2gray(x,modulation,M)

Description y = bin2gray(x,modulation,M) generates a Gray-encoded vector or matrix output y with the same dimensions as its input parameter x. x can be a scalar, vector, or matrix. modulation is the modulation type and must be a string equal to 'qam', 'pam', 'fsk', 'dpsk', or 'psk'. M is the modulation order that can be an integer power of 2.

[Rezaur Rahman]

please do give the code...it will be a great help for me...and i dnt understand why the modulation is needed for the conversion...anyways, thanx... :)

[Image Analyst]

I don't have that toolbox. If you do, then in the help there is nearly always example code. You can ask for a trial version for a month if you want. It's free for a month. Good luck.

Answer 2

[Guillaume]

The wikipedia article gives a very simple algorithm. I'm not sure what the difficulty is in converting it to matlab:

 function num = GrayToBinary(num)
    mask = bitshift(num, -1);
    while mask > 0
       num = bitxor(num, mask);
       mask = bitshift(mask, -1);
    end
  end