Which One Is Better to Cache: Requested Contents or Interfering Contents?

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In wireless edge caching, it is usual to cache the contents likely to be requested. Contrary to this traditional approach, we show that under heterogeneous content preference, caching contents that have less probability to be requested but are likely to interfere can increase the achievable rate of users by exploiting interference neutralization. Optimal content placement, which maximizes the average achievable rate, is compared with two extreme content placements: most-requested and most-interfering. Optimal content placement is shown to balance caching interfering contents against caching requested contents.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-06
Language
English
Article Type
Article
Citation

IEEE WIRELESS COMMUNICATIONS LETTERS, v.8, no.3, pp.861 - 864

ISSN
2162-2337
DOI
10.1109/LWC.2019.2897654
URI
http://hdl.handle.net/10203/263248
Appears in Collection
EE-Journal Papers(저널논문)
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