Physical-Layer Network Coding in Coded OFDM Systems with Multiple-Antenna Relay

Author

Meng Wu ; Wubben, Dirk ; Dekorsy, Armin

Author_Institution

Dept. of Commun. Eng., Univ. of Bremen, Bremen, Germany

fYear

2013

fDate

2-5 June 2013

Firstpage

1

Lastpage

5

Abstract

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.

Keywords

MIMO communication; OFDM modulation; antenna arrays; decoding; network coding; numerical analysis; relay networks (telecommunication); MI; MIMO detection technologies; PLNC; XOR-based network coded signal; coded OFDM systems; coded orthogonal frequency division multiplexing transmission; decoding schemes; detection schemes; multiple-antenna relay; multiple-input multiple-output system; mutual information; numerical simulations; physical-layer network coding; two-phase two-way relaying networks; uplink transmission; Antennas; Detectors; MIMO; Mutual information; Network coding; OFDM; Relays;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2013 IEEE 77th

Conference_Location

Dresden

ISSN

1550-2252

Type

conf

DOI

10.1109/VTCSpring.2013.6692712

Filename

6692712