Kurzfassung: |
In this paper physical layer network coding (PLNC) in two-phase two-way
relaying networks using coded orthogonal frequency division multiplexing
(OFDM) transmission is investigated. After receiving the superimposed
signal from both sources, the relay estimates the XOR-based network
coded signal, which is broadcast back to the sources. Assuming that the
relay is equipped with multiple antennas, the uplink transmission forms a
multiple-input multiple-output (MIMO) system, which allows the
application of MIMO detection technologies. To this end, the impact of
employing multiple antennas at the relay on different detection and
decoding schemes under investigations is studied and compared with
respect to mutual information (MI). Numerical simulations verify our
theoretical analysis.
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