Hi guys, i m the new member, i think that somebody can help me to solve my problem. I try to implement duo-binary recursive convolution encoder as a model in simulink for wimax physical layer simulation. Encoder model was implemented according to 802.16.x standart but i have a loop error problem on feedback branches of encoder. Do you have any idea about it?

 

When I have run into algebraic loop errors I can usually solve them by inserting a delay in the feedback path with an initial condition set, but I've never run into the specific error that you're seeing.

I'd suggest looking around on the Mathworks site for a solution. If you can't find anything there, I'd send the technical support team an email, they've been very helpful in the past.