Recently relaying schemes, where beside a source and a sing also additional terminals are incorporated into the communication, have gained considerable interest in order to guaranty robust and reliable communication. As several terminals are participate in the overall communication, new strategies for coding and control of symbol transmission (the relaying protocol) have to be evaluated. As the terminals are separated, novel techniques for Automatic Reqpeat Request (ARQ) have to be applied.

In this thesis the basics of ARQ in relay networks has to be gathered with respect to a literature analysis. Furthermore, an evaluation of the schemes with respect to Matlab simulations has to be performed. In order to process this thesis, the lecture Channel Coding and basic knowledge in Matlab is essential.