I need matlab code for low density parity check codes

I am doing my M.E project in ofdm.For encoding i prefer ldpc codes but not getting the matlab codes so plz help me to get the codes.

[Walter Roberson]

What problems have you encountered in your implementation ?

[sajeena]

The general code what we have used is given below, but i want to display this ldpc coding as a figure , by using xlabel and ylabel and also using figure option how can i do that .

H = dvbs2ldpc(2/3);
l = fec.ldpcenc(H);
codeword = encode(l,I);

[Walter Roberson]

What would you like the figure to look like? What would be the x-axis, and what would be the y-axis?

[sajeena]

xlabel is time and ylabel is amplitude i want to show the encoded bits output inthe form of discrete time signal.

Answer 1

[Walter Roberson]

Using your "codeword" from your sample code, and assuming you have the times stored in TimeVector, then:

stairs(TimeVector, codeword)