Title :
Network-Coded Interference Alignment in K-Pair Bidirectional Relaying Channels
Author :
Koike-Akino, Toshiaki ; Pun, Man-On ; Orlik, Philip
Author_Institution :
Mitsubishi Electr. Res. Labs. (MERL), Cambridge, MA, USA
Abstract :
In this paper, we propose a distributed interference alignment which employs physical-layer network coding and superposition coding for successive-cancelling multiuser detection (MUD) receivers in K-pair bidirectional relaying networks. The proposed scheme enables the transmitter to align only partial interference while strong interference is cancelled by MUD, and the transmitter can have more degrees of freedom in controlling the filter designs. Simulation results demonstrate that our proposed scheme significantly improves sum-rate performance in multiuser bidirectional relaying systems.
Keywords :
interference suppression; network coding; receivers; telecommunication channels; K-pair bidirectional relaying channels; K-pair bidirectional relaying networks; distributed interference alignment; filter designs; multiuser bidirectional relaying systems; network-coded interference alignment; physical-layer network coding; successive-cancelling multiuser detection receivers; superposition coding; transmitter; Encoding; Interference; Multiuser detection; Peer to peer computing; Receivers; Relays; Signal to noise ratio;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5962901