MDS coded caching with MRT and its optimization
Gibum Kim, Hyuncheol Park, Wan Choi
ICT Express · 2019
doi:10.1016/j.icte.2018.05.001 (opens in a new tab)
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Abstract
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. Keywords: Wireless caching, Coded caching, Maximum distance separable code, Maximum ratio transmission
Abstract licence: CC BY-NC-ND
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