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    Secure resource allocation in hybrid energy-harvesting relay and full-duplex receiver by Wei WANG, Xinrui LI, Liuguo YIN, Guoan ZHANG, Shibing ZHANG

    Published 2019-01-01
    “…Taking into account the wireless physical layer security in energy-constrained relaying systems,a secure resource allocation scheme was proposed under simultaneous wireless information and power transfer (SWIPT) protocol.The utility optimization problem was considered aiming to maximize the secrecy rate by jointly optimizing the power splitting (PS) ratio and the transmit powers under the constraint of the transmit powers of the nodes and the harvested energy of the relay.The objective problem,which is non-convex,was decoupled into two subproblems.One was to optimize the PS ratio,another was to optimize the transmit powers.The optimal solution of the subproblems can be obtained in the closed-form.Then,the suboptimal solution is obtained with the proposed convergent iterative algorithm.Simulation results show the effects of artificial noise signal,residual self-interference signal,transmit power of nodes,amplification factor of relay and other factors on the security performance.Compared with the traditional gradient descent algorithm,the proposed algorithm can reduce more than 80% of the computational load,while the algorithm has the slightly better performance.…”
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  3. 403

    Relay-Assisted Aerial Communication over a Single-Shadowed Communication Channel by Haider Mehdi, Zakir Hussain, Syed Areeb Ahmed, Syed Muhammad Atif Saleem

    Published 2024-01-01
    “…This paper discusses amplify-and-forward relay-assisted air-to-ground unmanned aerial vehicle communication over a recently proposed single-shadowing-based composite fading scenario. …”
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    On the Coverage Extension and Capacity Enhancement of Inband Relay Deployments in LTE-Advanced Networks by Abdallah Bou Saleh, Simone Redana, Jyri Hämäläinen, Bernhard Raaf

    Published 2010-01-01
    “…Two inband operation modes of relay nodes are to be supported, namely Type 1 and Type 1b. …”
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    Paging and Location Management in IEEE 802.16j Multihop Relay Network by Kuan-Po Lin, Hung-Yu Wei

    Published 2010-01-01
    “…IEEE 802.16j is an emerging wireless broadband networking standard that integrates infrastructure base stations with multihop relay technology. Based on the idle mode operation in IEEE 802.16j, we propose a novel location management and paging scheme. …”
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    Restoration Strategy Based on Optimal Relay Node Placement in Wireless Sensor Networks by Xiaoding Wang, Li Xu, Shuming Zhou

    Published 2015-07-01
    “…However, the variability of distances between disjoint segments has tremendous influence on relay nodes deployment. In fact, finding the optimal solution for connecting disjoint segments in terms of the number and positions of relay nodes is NP-hard. …”
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    Minimum-Cost QoS-Constrained Deployment and Routing Policies for Wireless Relay Networks by Frank Yeong-Sung Lin, Chiu-Han Hsiao, Kuo-Chung Chu, Yi-Heng Liu

    Published 2013-01-01
    “…The aim of relaying is to enhance both coverage and capacity. …”
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