Paper Info
Title
Non-regenerative multi-way relaying with linear beamforming
Abstract
In this paper, we introduce non-regenerative multi-way relaying. A half-duplex multi-antenna relay station (RS) assists multiple nodes which want to communicate to each other. Each node has a message and wants to decode the messages from all other nodes. The number of communication phases is equal to the number of nodes, N, such that when N = 2, we have the well known two-way relaying. In the first phase, all nodes transmit simultaneously to the RS and in the following (N-1) phases the RS applies transceive beamforming and transmits to all nodes. The achievable sum rate for asymmetric traffic and symmetric traffic cases are derived for N-phase multi-way relaying. Three low complexity linear transceive beamformers based on Zero Forcing (ZF), Minimum Mean Square Error (MMSE) and Maximisation of Signal to Noise Ratio (MSNR) criteria are designed for N-phase multi-way relaying. From sum rate analysis, MMSE outperforms the other beamformers at the expense of using feedback channel to obtain the noise variance of the nodes. If interference cancellation is performed at all nodes, MSNR achieves the highest performance gain.
Year
DOI
Venue
2009
10.1109/PIMRC.2009.5450052
Tokyo
Keywords
Field
DocType
antennas,array signal processing,communication complexity,interference (signal),interference suppression,relays,N-phase multiway relaying,asymmetric traffic,communication phases,feedback channel,half-duplex multiantenna relay station,interference cancellation,linear beamforming,low complexity linear transceive beamformers,maximisation of signal to noise ratio,minimum mean square error,nonregenerative multiway relaying,sum rate analysis,transceive beamforming,zero forcing
Beamforming,Topology,Computer science,Control theory,Single antenna interference cancellation,Signal-to-noise ratio,Minimum mean square error,Communication channel,Real-time computing,Communication complexity,Zero Forcing Equalizer,Relay
Conference
ISBN
Citations 
PageRank 
978-1-4244-5123-4
23
1.56
References 
Authors
9
2
Name
Order
Citations
PageRank
Aditya Umbu Tana Amah1654.51
Anja Klein223218.18