Results 21 to 30 of about 180,313 (330)
Sensors, 2017 Physical layer security is an attractive security mechanism, which exploits the randomness characteristics of wireless transmission channel to achieve security. However, it is hampered by the limitation of the channel condition that the main channel must
Yishan Su +4 more
doaj +1 more source
Modular Algebraic Precoding Relay System Model Based on Lattice Reduction
IEEE Access, 2018 According to the existing multi-antenna relay forwarding protocol, the relay matrix can be split into two parts-relay nodes forward and backward filters direct concatenation, then in actual channel matrix design, relay's forward and backward channel ...
Chaoyi Zhang, Yili Zheng, Yan Yao
doaj +1 more source
Capacity of a Class of Broadcast Relay Channels [PDF]
, 2010 Consider the broadcast relay channel (BRC) which consists of a source sending information over a two user broadcast channel in presence of two relay nodes that help the transmission to the destinations.
Behboodi, Arash, Piantanida, Pablo
core +2 more sources
On the Capacity of a Two-Hop Half-Duplex Relay Channel With a Markovian Constrained Relay
IEEE Access, 2019 Consider a two-hop half-duplex relay channel (source-relay-destination) with a Markovian-constrained relay. The capacity of such channel is shown to be equal to the well-known cut-set upper bound. For the case where the relay-to-destination link is noise-
Linyun Huang, Yi Hong
doaj +1 more source
Power allocation and capacity optimization of multi-relay cooperative communication system in tunnel
Gong-kuang zidonghua, 2015 The multi-relay cooperative communication system model in rectangular tunnel based on multimode channel model was established, and the channel capacity calculation formulas of multi-relay cooperative communication system in amplify and forward mode and ...
ZHAI Wenyan +3 more
doaj +1 more source
Cooperative Relaying with State Available Non-Causally at the Relay [PDF]
, 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
Relay Selection Scheme for Multi-Hop Transmission of MU-MIMO System
Applied 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
Incremental Relaying for the Gaussian Interference Channel with a Degraded Broadcasting Relay [PDF]
, 2011 This paper studies incremental relay strategies for a two-user Gaussian relay-interference channel with an in-band-reception and out-of-band-transmission relay, where the link between the relay and the two receivers is modelled as a degraded broadcast ...
Lei Zhou +3 more
core +1 more source
Secrecy in cooperative relay broadcast channels [PDF]
2008 IEEE International Symposium on Information Theory, 2008 Submitted to IEEE Trans. Inf.
Ekrem, E., Ulukus, S.
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Entropy, 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