Paper Info
Title
Multiplexing gain of amplify-forward relaying in wireless multi-antenna relay networks
Abstract
This paper studies the general multi-antenna multiple-relay network. Every two nodes of the network are either connected together through a Rayleigh fading channel or disconnected. We study the ergodic capacity of the network in the high SNR regime. We prove that the traditional amplify-forward relaying achieves the maximum multiplexing gain of the network. Furthermore, we show that the maximum multiplexing gain of the network is equal to the minimum vertex cut-set of the underlying graph of the network, which can be computed in polynomial time in terms of the number of network nodes. Finally, the argument is extended to the multicast and multi-access scenarios.
Year
DOI
Venue
2009
10.1109/ISIT.2010.5513578
international symposium on information theory
Keywords
DocType
Volume
rayleigh channels,antenna arrays,multiplexing,polynomials,radio networks,rayleigh fading channel,amplify-forward relaying,multiplexing gain,network ergodic capacity,wireless multiantenna relay networks,polynomial time
Journal
abs/0912.3981
ISBN
Citations 
PageRank 
978-1-4244-7891-0
2
0.40
References 
Authors
12
2
Name
Order
Citations
PageRank
Shahab Oveis Gharan119816.23
Amir K. Khandani2113992.60