binary polynomial division help

2012 11 2
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I'm struggling with binary polynomial division.
I have a vector of data which is a message sent over a wireless link.
I have formed the data in to a vector of 1x341 which although it holds doubles actually contains only binary (0 or 1) values in each element.
I'm trying to determine the parity given g(x) = x^75 + x^73 ....... + x + 1
The spec states that the parity must be checked by determining if the first n bits (considered as a polynomial) are divisible by g(x). I'm assuming n is my 341 bit message.
Any suggestions how I go about this division?

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Star Strider
Star Strider 2012-11-2
I believe you have to use the Communication System Toolbox function gfdeconv.

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Adrian Holmes
Adrian Holmes 2012-11-13

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Thanks for the replies. gfdeconv worked for me once I had corrected my error in the code generating polynomial (g(x)).
Now to work out how to implement that in VHDL.......
:)

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Matt J
Matt J 2012-11-2

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Use the DECONV command to perform polynomial division.

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