Results 31 to 40 of about 2,606,146 (326)

Cooperative Relaying with State Available Non-Causally at the Relay [PDF]

open access: yes, 2009
We consider a three-terminal state-dependent relay channel with the channel state noncausally available at only the relay. Such a model may be useful for designing cooperative wireless networks with some terminals equipped with cognition capabilities, i ...
Kotagiri, Shiva Prasad   +3 more
core   +3 more sources

On the Capacity of the Two-Hop Half-Duplex Relay Channel [PDF]

open access: yesGlobal Communications Conference, 2014
Although extensively investigated, the capacity of the two-hop half-duplex (HD) relay channel is not fully understood. In particular, a capacity expression which can be evaluated straightforwardly is not available and an explicit coding scheme which ...
N. Zlatanov, V. Jamali, R. Schober
semanticscholar   +1 more source

Relay Selection Scheme for Multi-Hop Transmission of MU-MIMO System

open access: yesApplied Sciences, 2018
Recently, wireless communication systems use a multi-hop transmission scheme using a relay to expand the cell coverage of the system. The multi-hop transmission scheme can expand the cell coverage of wireless communication systems.
Won-Chang Kim   +2 more
doaj   +1 more source

Secrecy in cooperative relay broadcast channels [PDF]

open access: yes2008 IEEE International Symposium on Information Theory, 2008
Submitted to IEEE Trans. Inf.
Ekrem, E., Ulukus, S.
openaire   +2 more sources

The Approximate Capacity of the MIMO Relay Channel [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
Capacity bounds are studied for the multiple-antenna complex Gaussian relay channel with $t_{1}$ transmitting antennas at the sender, $r_{2}$ receiving and $t_{2}$ transmitting antennas at the relay, and $r_{3}$ receiving antennas at the receiver.
Xianglan Jin, Young-Han Kim
semanticscholar   +1 more source

Refracting RIS-Aided Hybrid Satellite-Terrestrial Relay Networks: Joint Beamforming Design and Optimization

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2022
Reconfigurable intelligent surface (RIS) has been viewed as a promising solution in constructing reconfigurable radio environment of the propagation channel and boosting the received signal power by smartly coordinating the passive elements’ phase shifts
Zhi Lin   +6 more
semanticscholar   +1 more source

Network Code Design for Orthogonal Two-hop Network with Broadcasting Relay: A Joint Source-Channel-Network Coding Approach [PDF]

open access: yes, 2010
This paper addresses network code design for robust transmission of sources over an orthogonal two-hop wireless network with a broadcasting relay. The network consists of multiple sources and destinations in which each destination, benefiting the relay ...
Joda, Roghayeh, Lahouti, Farshad
core   +2 more sources

Interfering Relay Channels

open access: yesEntropy, 2017
This paper introduces and studies a model in which two relay channels interfere with each other. Motivated by practical scenarios in heterogeneous wireless access networks, each relay is assumed to be connected to its intended receiver through a digital link with finite capacity.
Hieu Do   +3 more
openaire   +2 more sources

Rate bounds for MIMO relay channels [PDF]

open access: yesJournal of Communications and Networks, 2008
25 pages, 6 figures, submitted to Journal on Communications and Networks in December 2007, revised in April ...
Lo, Caleb K.   +2 more
openaire   +2 more sources

Myopic coding in multiple relay channels [PDF]

open access: yesProceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005
In this paper, we investigate achievable rates for data transmission from sources to sinks through multiple relay networks. We consider myopic coding, a constrained communication strategy in which each node has only a local view of the network, meaning that nodes can only transmit to and decode from neighboring nodes.
Ong, Lawrence, Motani, Mehul
openaire   +2 more sources

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