Network coded multi-way relaying with iterative decoding

This paper investigates a communication system where three terminals exchange their information with each other with the help of a relay. One joint network and channel coding (JNCC) scheme (based on iterative soft information exchange between channel and network decoder) and one separate network and channel coding scheme based on turbo codes are proposed. The outage behavior of the presented systems are compared with two reference systems, where no network coding (NC) is applied. It is shown that the network coding approaches allow the system to gain diversity for higher rates than the schemes without NC. Moreover, JNCC outperforms the separate approach by exploiting the redundancy provided by the network code.