Analysis and Implementation for Physical-Layer Network Coding with Carrier Frequency Offset

Autoren:	M. Wu, F. Ludwig, M. Woltering, D. Wübben, A. Dekorsy, S. Paul
Kurzfassung:	In this paper we consider physical-layer network coding (PLNC) in OFDM-based two-way relaying systems. Practically, a key impairment for the application of PLNC is the carrier frequency offset (CFO) mismatch between the sources and the relay, which can not be compensated completely in the multiple-access (MA) phase. As this CFO mismatch results in inter-carrier interference (ICI) for OFDM transmissions, practical CFO compensation and ICI cancelation strategies are investigated to mitigate the impairment for a-posterior probability (APP) based PLNC decoders at the relay. Furthermore, we perform hardware implementation of the two-way relaying network employing an long term evolution (LTE) near parametrization adapted to PLNC. The APP-based decoding schemes with CFO compensation and ICI cancelation are applied on this real-time transmission platform to verify the analytical results.
Dokumenttyp:	Konferenzbeitrag
Veröffentlichung:	Erlangen, Deutschland, 12. - 13. März 2014
Konferenz:	International ITG Workshop on Smart Antennas (WSA2014)
Dateien:	672 KB BibTEX