Hi,

Below is the user interface I have created to simulate LDPC coding and decoding

The code sequence is decoded iteratively by passing values between the left and right nodes through the connections.

The first thing it would be good to add in order to improve visualization is to add arrows to the connections in the direction of passing values. The alternative is to draw a bigger arrow at the top of the connection showing the direction.

Another thing I would like to do is displaying the current mathematical operation below the connection (in this example c * H'). What I don't know how to do is displaying special characters and mathematical symbols and other kinds of text such as subscript and superscript in the figure (for example sum sign and subscript "T" instead of sign ="'" to indicate transposed matrix).

I would be very thankful if anyone could point to any useful resources for the questions above or show the solution.

Thank you.