parchk

Adds an overall parity check bit to the input Code.

Description

Adds an overall parity check bit to the input code C1.The output code C2 is the extended code.C1 must be a binary fixed length block code.
 
For example if C1=[1 0 0 1 ; 1 1 1 0] then
C2=parchk(C1),returns C2=[1 0 0 1 0 ; 1 1 1 0 1].

• MATLAB release: MATLAB 7 (R14)

[urs (us) schwarz]

could this not be simplified?
% some data
c=[1 0 0 1;1 1 1 0;1 1 1 1];
% the engine
cp=[c,[bitand(sum(c,2),1)]]
just a thought
us

[Jim Simos]

Dear Urs,

        Thanks,for your feedback.You are absolutely right.In the present form,your suggestion ovverides my function :-)
I will upload a new extended version,shortly.May i incorporate your thoughts?
Let me know.

Friendly,Jim.

[Duane Hanselman]

If this function can be simplified as shown by Urs, remove your implementation entirely. Since Urs came up with the solution, let him post it.

[Jim Simos]

For your information,I contacted Urs via email and proved him,tha his implementation is wrong.You can verify it,if in his implentation,you take another step.I am still waiting for reply..I DIDN'T reply or repost so far,from respect to Urs.As for you,don't jump to conclusions..better read first a Coding Theory Book..

[urs (us) schwarz]

i just answered jim's email and we'll see what happens...

[Nick Cheilakos]