DocumentCode :
3629847
Title :
One- and Two-Way Decode-and-Forward Relaying for Wireless Multiuser MIMO Networks
Author :
Celal Esli;Armin Wittneben
Author_Institution :
Commun. Technol. Lab., ETH Zurich, Zurich
fYear :
2008
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, we propose multiuser multiple-input multiple-ouput (MIMO) one-and two-way relaying protocols. Several wireless MIMO node pairs are establishing either unidirectional or bidirectional transmission links via a single decode-and-forward MIMO relay without causing interference to each other. For both half-duplex two-phase relaying protocols, the relay separates messages of different node pairs spatially by using zero-forcing based methods, whereas, in order to cancel the interference within the bidirectional links, XOR preceding followed by self-interference cancellation is employed. Both sum rate and maxmin fairness optimizations, as well as quality-of-service assurance, are considered for the design of the precoders at the relay. The corresponding optimization algorithms for both one-and two-way relaying have been developed using semideflnite programming, which consider the intersection of multiple access and broadcast phases´ rate regions.
Keywords :
"Decoding","Relays","MIMO","Interference cancellation","Broadcasting","Propagation losses","Communications technology","Laboratories","Wireless application protocol","Design optimization"
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
ISSN :
1930-529X
Print_ISBN :
978-1-4244-2324-8
Type :
conf
DOI :
10.1109/GLOCOM.2008.ECP.765
Filename :
4698540
Link To Document :
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