author = {M. Wu and D. W\"{u}bben and A. Dekorsy},
  year = {2013},
  month = {Jan},
  title = {Mutual Information Based Analysis for Physical-Layer Network Coding with Optimal Phase Control},
  URL = {http://scc2013.et.unibw-muenchen.de/},
  address={Munich, Germany},
  abstract={In this paper two-way relaying networks are considered using 
physical-layer network coding (PLNC) in a two-phase protocol. In the 
multiple access (MA) phase, both sources transmit their messages to the 
relay simultaneously. Subsequently, the relay estimates and broadcasts 
the XOR-based network coded message back to the sources in the broadcast
(BC) phase. We concentrate on the critical MA phase where several 
detection and decoding schemes at the relay are investigated and 
compared with respect to mutual information (MI) and system throughput. 
It is shown, that for some detection and decoding schemes, the system 
performance is highly dependent on the phase difference of the two 
incoming messages at the relay, motivating a phase control strategy at 
the sources before transmission. Simulation results confirm our analysis
and the superior performance achieved by phase control in practical 
  booktitle={9th International ITG Conference on Systems, Communications and Coding (SCC 2013)}