Paper Info
Title
Multi-Group Multi-Way Relaying: When Analog Network Coding Finds Its Transceive Beamforming
Abstract
In this paper, we introduce non-regenerative multi-group multi-way relaying. A half-duplex non-regenerative multi-antenna relay station (RS) assists multiple communication groups. In each group, there are multiple nodes that want to communicate with each other. Each node has a message and wants to decode the messages only from other nodes in its group. The required number of communication phases for each group is equal to the number of nodes in the group. In the first phase, all nodes transmit simultaneously to the RS and in the following phases the RS applies transceive beamforming and transmits to all nodes. We derive the achievable sum rate of non-regenerative multi-group multi-way relaying for asymmetric and symmetric traffic and for two different cases, namely, with and without analog network coding (ANC). We specially design an ANC-aware transceive beamforming for non-regenerative multi-group multi-way relaying. The ANC-aware transceive beamforming is designed using two criteria, namely, matched filter (MF) and semidefinite relaxation (SDR) of a maximisation of minimum signal to noise ratio problem. From sum rate analysis, it is shown that applying ANC at the RS improves the performance. Regarding the ANC-aware transceive beamforming, the ANC-SDR outperforms ANC-MF at the cost of computational complexity and additional signaling from the nodes to the RS.
Year
DOI
Venue
2010
10.1109/WCNC.2010.5506483
WCNC
Keywords
Field
DocType
antennas,array signal processing,decoding,matched filters,network coding,telecommunication traffic,ANC-aware transceive beamforming,analog network coding,asymmetric traffic,computational complexity,decoding,half-duplex no-regenerative multiantenna relay station,matched filter,nonregenerative multigroup multiway relaying,semidefinite relaxation,signal to noise ratio problem,sum rate analysis,symmetric traffic
Linear network coding,Beamforming,Computer science,Single antenna interference cancellation,Signal-to-noise ratio,Computer network,Matched filter,Decoding methods,Relay,Computational complexity theory
Conference
Citations 
PageRank 
References 
3
0.40
5
Authors
2
Name
Order
Citations
PageRank
Aditya Umbu Tana Amah1472.32
Anja Klein223218.18