Caching in heterogeneous satellite networks with fountain codes | Zendy

Recayte Estefanía | Zendy; Lázaro Francisco | Zendy; Liva Gianluigi | Zendy

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Caching in heterogeneous satellite networks with fountain codes

Author(s) -

Recayte Estefanía,

Lázaro Francisco,

Liva Gianluigi

Publication year - 2019

Publication title -

international journal of satellite communications and networking

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.388

H-Index - 39

eISSN - 1542-0981

pISSN - 1542-0973

DOI - 10.1002/sat.1323

Subject(s) - computer science , backhaul (telecommunications) , fountain code , computer network , geostationary orbit , cache , phy , luby transform code , satellite , telecommunications , decoding methods , wireless , block code , physical layer , linear code , base station , engineering , aerospace engineering

Summary In this paper, we investigate the performance of caching schemes based on fountain codes in a heterogeneous satellite network. We consider multiple cache‐aided hubs, which are connected to a geostationary satellite through backhaul links. With the aim of reducing the average number of transmissions over the satellite backhaul link, we propose the use of a caching scheme based on fountain codes. We derive a simple analytical expression of the average backhaul transmission rate and provide a tight upper bound on it. Furthermore, we show how the performance of the fountain code‐based caching scheme is similar to that of a caching scheme based on maximum distance separable codes.

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