MDS coded caching with MRT and its optimization | Zendy

Gibum Kim | Zendy; Hyuncheol Park | Zendy; Wan Choi | Zendy

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MDS coded caching with MRT and its optimization

Author(s) -

Gibum Kim,

Hyuncheol Park,

Wan Choi

Publication year - 2018

Publication title -

ict express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.733

H-Index - 22

ISSN - 2405-9595

DOI - 10.1016/j.icte.2018.05.001

Subject(s) - cache , computer science , wireless , computer network , channel (broadcasting) , transmission (telecommunications) , separable space , optimization problem , wireless network , algorithm , mathematics , telecommunications , mathematical analysis

In conventional maximum distance separable (MDS) coded caching systems, storage-efficient caching strategy which minimizes unnecessarily redundant data is believed to be optimal. However, the conventional storage efficient caching strategy may not be optimal because redundantly stored data can be utilized as diversity sources to combat wireless channel impairments due to channel fading. This paper explores how MDS coded caching facilitates coordinated maximum ratio transmission (MRT) in cache enabled wireless networks. Optimizing the length of MDS coded sequence and the amount of redundant cached data, we demonstrate the gain of MDS coded caching leveraged by MRT outperforms conventional uncoded caching schemes.

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