ReedSolomon C++/C# Decoder function for Binary Data

I have a project (enclosed here as RS_ECC) that creates parity data for a given block of input data (512 bytes) using the common Reed-Solomon algorithm. I need a function written that will decode (i.e. correct) the data if a bit or two are corrupted.

The function prototype should look like this:

int Decode(Int32[] msgdata, Int[] parity_syms)

The result should be as follows:

0 = NoErrors //all bits and parity match

1 = Correctable //one or more bits dont match but was corrected

2 = EccError //the error is in the ecc

3 = Uncorractable //more errors than are correctable

For example, using the enclosed project and the test file ("[login to view URL]"), I can create the parity data like:

byte() sub_data = [login to view URL]; //(512 bytes)

[login to view URL](512, 4, 9); //init the class with 512 byte blocks, 4-bit correction, and 9-bit wide symbols.

int() result = [login to view URL](sub_data);

The result data returned is (keep in mind each result is 9-bits wide):

result(0) = 0x044

result(1) = 0x058

result(2) = 0x0EC

result(3) = 0x1A9

result(4) = 0x056

result(5) = 0x123

result(6) = 0x1BB

result(7) = 0x031

So if a bit is changed in the [login to view URL], when you run it through the Decode function, it would correct the bit and then return (1).

Please read this entire project before posting a bid. There are several open-source projects with examples of RS decoding, so any of them that you can use to work with the provided example will be acceptable.

Habilidades: Algoritmo, Programação C#, Programação C++ , Matemática

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( 6 comentários ) Redmond, United States

ID do Projeto: #16064664

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Write program that decodes data that has been encoded with the Reed-Solomon algorithm. .............

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