relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3250/
title: Cache-aided Full Duplex: Delivery Time Analysis  and Optimization
creator: Vu, Xuan Thang
creator: Trinh, Anh Vu
creator: Chatzinotas, Symeon
creator: Ottersten, Björn
subject: Communications
subject: Electronics and Communications
description: Edge caching has received much attention as a  promising technique to overcome the stringent latency and data  hungry challenges in the future generation wireless networks.  Meanwhile, full duplex (FD) transmission can potentially double  the spectral efficiency by allowing a node to receive and transmit  simultaneously. In this paper, we investigate the delivery time  performance of a cache-aided FD system, in which an edge  node, operates in FD mode, serves users via wireless channels  and is equipped with a cache memory. Firstly, we derive a  closed-form expression for the average delivery time by taking  into account the uncertainties of both backhaul and access  wireless channels. The derived analysis allows the examination  of the impact of key parameters, e.g., cache size and transmit  power. Secondly, a power optimization problem is formulated  to minimize the average delivery time. To deal with the nonconvexity  of the formulated problem, we propose an iterative  optimization algorithm by using the bisection method. Finally,  numerical results are presented to demonstrate the effectiveness  of the proposed algorithm.
publisher: IEEE
date: 2018
type: Article
type: NonPeerReviewed
identifier:   Vu, Xuan Thang and Trinh, Anh Vu and Chatzinotas, Symeon and Ottersten, Björn  (2018) Cache-aided Full Duplex: Delivery Time Analysis and Optimization.  IEEE Wireless Communication Letters .    ISSN ‎2162-2337    (Submitted)