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Title: Optimization of hybrid cache placement for collaborative relaying
Authors: Zheng, Gan
Suraweera, Himal A.
Krikidis, Ioannis
Keywords: Collaborative relaying
Wireless caching
Outage probability
Issue Date: 2016
Publisher: IEEE
Citation: ZHENG, G., SURAWEERA, H. and KRIKIDIS, I., 2016. Optimization of hybrid cache placement for collaborative relaying. IEEE Communications Letters, 21 (2), pp.442-445
Abstract: Traditional wireless multi-hop relaying systems suffer from inefficient use of bandwidth resources. This letter studies the use of content caching at distributed relays to tackle this problem and improve the performance of collaborative relaying. We propose a hybrid caching scheme that is jointly optimized with the transmission schemes, to achieve a fine balance between the signal cooperation gain and the caching diversity gain. The optimization problem of cache placement to minimize the outage probability is studied and is shown to be convex. Numerical results demonstrate significant outage performance gains over traditional relaying without caching.
Description: This is an open access article published by IEEE and distributed under the terms of the Creative Commons Attribution Licence, https://creativecommons.org/licenses/by/3.0/
Sponsor: . This work was supported in part by the UK Engineering and Physical Sciences Research Council (EPSRC) project EP/N007840/1, and the Research Promotion Foundation, Cyprus, under the project KOINA/ERANETMED/1114/03.
Version: Published
DOI: 10.1109/LCOMM.2016.2623307
URI: https://dspace.lboro.ac.uk/2134/23448
Publisher Link: http://dx.doi.org/10.1109/LCOMM.2016.2623307
ISSN: 1089-7798
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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