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• W2951229752 abstract "Device-to-device (D2D) communication underlaying cellular wireless networks is a promising concept to improve user experience and resource utilization by allowing direct transmission between two cellular devices. In this paper, performance of network-assisted D2D communication is investigated where D2D traffic is carried through relay nodes. Considering a multi-user and multi-relay network, we propose a distributed solution for resource allocation with a view to maximizing network sum-rate. An optimization problem is formulated for radio resource allocation at the relays. The objective is to maximize end-to-end rate as well as satisfy the data rate requirements for cellular and D2D user equipments under total power constraint. Due to intractability of the resource allocation problem, we propose a solution approach using message passing technique where each user equipment sends and receives information messages to/from the relay node in an iterative manner with the goal of achieving an optimal allocation. Therefore, the computational effort is distributed among all the user equipments and the corresponding relay node. The convergence and optimality of the proposed scheme are proved and a possible distributed implementation of the scheme in practical LTE-Advanced networks is outlined. The numerical results show that there is a distance threshold beyond which relay-aided D2D communication significantly improves network performance with a small increase in end-to-end delay when compared to direct communication between D2D peers." @default.
• W2951229752 created "2019-06-27" @default.
• W2951229752 creator A5032176749 @default.
• W2951229752 creator A5089270885 @default.
• W2951229752 date "2014-06-12" @default.
• W2951229752 modified "2023-09-27" @default.
• W2951229752 title "Distributed Resource Allocation for Relay-Aided Device-to-Device Communication: A Message Passing Approach" @default.
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• W2951229752 hasPublicationYear "2014" @default.
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