Relay networks
Outage Performance of Cognitive Relay Networks with Best Relay Selection in Nakagami m Channels
... cognitive relay networks over Nakagami-m fading was derived in ...(AF) relay networks in inde- pendent non-identically distributed ...and relay selection was investigated in Rayleigh ...
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Joint Antenna and User Selection for Untrusted Relay Networks
... In this paper, we investigate secure communication for the multi-antenna and multiuser untrusted relay networks. By taking the advantage of antenna diversity for the security en- hancement [15], we propose ...
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Resource Partitioning with Beamforming for the Decode Forward Relay Networks
... the relay- ing networks to enhance not only the diversity but also the ...AF relay power control with full CSI can be approached with small amount of feedback ...AF relay networks [9] ...
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Performance analysis of SWIPT relay networks with noncoherent modulation
... SWIPT relay networks have been areas of active research interest (see [7]–[10] and the references ...SWIPT-enabled relay terminal harvests energy from the signal transmitted from the source node to ...
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Cognitive Relay Networks: A Comprehensive Survey
... different networks and applications ranging from wireless to public safety, smart grid, medical, relay and cellular applications to increase the throughput and spectrum efficiency of ...cognitive relay ...
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Outage performance of relay assisted primary and secondary transmissions in cognitive relay networks
... radio networks, sec- ondary users transmit signals by detecting spectrum holes, or share the same frequency bands with primary users as long as the induced interference from secondary users to primary users is ...
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Optimal Relay Design for MIMO Relay Networks Using Gradient Projection
... the relay system are installed with multiple antennas, we call such system Multiple-Input Multiple-Output (MIMO) relay communication ...MIMO relay communication systems have attracted much research ...
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Joint source and relay design for two hop amplify and forward relay networks with QoS constraints
... Relay networks have recently attracted much attention because of their promising capability in achieving reliable communication and wide coverage for the next genera- tion of wireless systems ...AF ...
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On the performance of distributed space time coded cooperative relay networks based on inter relay communications
... The good performance of the FDSTC protocol is clearly demonstrated in this paper using simple NR-relays and R-relays. Advanced techniques for relay networks (such as relay selection [15,16,31], ...
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Sparsity aware multiple relay selection in large multi hop decode and forward relay networks
... In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse ...
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Performance of Multiple Antennas Cognitive Relay Networks
... the relay amplifies the received signal and retransmit it to the destination and decode-and-forward protocol, in which the signal is decoded, re encoded and forwarded to the ...cognitive relay ...
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Code Design for Multihop Wireless Relay Networks
... Cooperative diversity is a popular coding technique for wire- less relay networks [1]. When a transmitter node wants to communicate with a receiver node, it uses its neigh- bor nodes as relays, in order to ...
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Outage performance of cooperative cognitive relay networks
... Cooperative relay networks can help cognitive radios to improve their utilisation by reducing their transmit ...cognitive relay network model has been analysed to derive the closed-form out- age ...
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Power control for cognitive relay networks with sensing uncertainties
... allocation problem with the imperfect spectrum sensing is considered to maximize capacity of SU. Considering OFDM-based CRNs under the spectrum sensing uncer- tainties, PC problem is studied in [16, 17]. In [16], the ...
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Joint source and relay optimization for parallel MIMO relay networks
... the relay amplifying matrix. In [7], both the source and relay matrices were jointly designed to maximize the source–destination ...and relay matrices for a broad class of objective ...single ...
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Joint source and relay optimization for interference MIMO relay networks
... Two-way relay systems have hence been proposed to overcome the loss of spectral efficiency in such one-way relay methods ...two-way relay channel can be accomplished in two phases: the multiple ...
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Secure Communications for Two Way Relay Networks Via Relay Chatting
... a relay and a jamming node to enhance the ...joint relay and jammer selec- tion were investigated for two-way cooperative networks in ...three relay nodes to enhance security, where the first ...
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A Study on Resource Allocation Algorithms in Wireless Relay Networks
... over relay networks is discussed in ...nodes: relay nodes and receiving ...wireless relay networks, it only decides whether or not to activate a relay node during the ...each ...
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Joint Relay and Jammer Selection for Secure on Relay Networks
... implementing a classify then jam policy just is completion of a wireless transmission. Jamming attacks are harder to counter and have now more security problems. Some working jigs have been proven to cause severe ...
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Amplify forward relaying for multiple antenna multiple relay networks under individual power constraint at each relay
... optimum relay gain matrices are obtained by solving the optimization problem using Lagrange dual variables ...the relay gain matrix heuristically or concern another con- straint such as a limited power ...
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