Paper Info
Title
Interference Alignment in Multi-User Two Way Relay Networks
Abstract
In this paper, we consider a bidirectional communication between K node pairs, where each node is equipped with multiple antennas and has a message to be transmitted to its communication partner. There is no direct link between the 2K nodes and a relay is employed to enable the communication. It is assumed that the relay does not have enough antennas to perform receive and transmit zero forcing. As interferences are unavoidable at each receiver, we call this channel K user pair symmetric relay interference channel. We show that the Degrees of Freedom (DoF) achievable by the multiple input multiple output (MIMO) Interference Alignment in such a K user pair symmetric relay interference channel are the same as in a K user symmetric interference channel without a relay. Besides this, the presence of a relay simplifies the algorithm for computing the alignment solution. We propose a two step closed form solution for the alignment problem based on the two way relaying protocol.
Year
DOI
Venue
2011
10.1109/VETECS.2011.5956515
Vehicular Technology Conference
Keywords
Field
DocType
MIMO communication,antenna arrays,interference suppression,protocols,radiofrequency interference,relays,wireless channels,Degrees of Freedom,DoF,K node pair,K user symmetric interference channel,MIMO interference alignment,bidirectional communication,channel K user pair symmetric relay interference channel,multiple antenna,multiple input multiple output interference alignment,multiuser two way relay network,receive zero forcing,transmit zero forcing,two way relaying protocol
Relay channel,Computer science,MIMO,Closed-form expression,Communication channel,Electronic engineering,Interference (wave propagation),Interference alignment,Relay,Multi-user
Conference
ISSN
ISBN
Citations 
1550-2252
978-1-4244-8332-7
18
PageRank 
References 
Authors
0.88
10
3
Name
Order
Citations
PageRank
Rakash SivaSiva Ganesan1609.30
Tobias Weber210512.55
Anja Klein317389.48