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TIT
2011
112views more  TIT 2011»
13 years 3 months ago
On the Secure Degrees of Freedom of Relaying With Half-Duplex Feedback
—Secure communication protocols over a single-relay system in the presence of a multiple-antenna eavesdropper are investigated. When there is no direct link between the source an...
Thanh Tùng Kim, H. Vincent Poor
CORR
2010
Springer
82views Education» more  CORR 2010»
13 years 9 months ago
Capacity Theorems for the AWGN Multi-Way Relay Channel
Abstract--The L-user additive white Gaussian noise multiway relay channel is considered, where multiple users exchange information through a single relay at a common rate. Existing...
Lawrence Ong, Christopher M. Kellett, Sarah J. Joh...
PIMRC
2010
IEEE
13 years 6 months ago
Efficient cooperative protocols for general outage-limited multihop wireless networks
Abstract-- Due to the limited energy supplies of nodes in wireless networks, achieving energy efficiency is crucial for extending the lifetime of these networks. Thus, we study eff...
Behrouz Maham, Walid Saad, Mérouane Debbah,...
ICC
2009
IEEE
114views Communications» more  ICC 2009»
14 years 3 months ago
Distributed Gradient Based Gain Allocation for Coherent Multiuser AF Relaying Networks
—A set of distributed non-cooperating relay antennas is known to be capable of orthogonalizing multiple sourcedestination pairs in space by coherent amplify-and-forward (AF) rela...
Celal Esli, Jörg Wagner, Armin Wittneben
CORR
2006
Springer
126views Education» more  CORR 2006»
13 years 9 months ago
Power Control for User Cooperation
For a fading Gaussian multiple access channel with user cooperation, we obtain the optimal power allocation policies that maximize the rates achievable by block Markov superpositi...
Onur Kaya, Sennur Ulukus