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Coded caching with small subpacketization via spatial reuse and content base replication

Asadzadeh, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1109/ISIT.2019.8849460
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2019
  4. Abstract:
  5. In the context of coded caching in a K-user, L-cells cellular network, we show that by using a simple decentralized content base replication scheme and exploiting spatial reuse, a very good file delivery throughput with small file subpacketization order can be achieved. In particular, this is close to the throughput achieved in a L-servers linear network or L-antenna fully connected MIMO network (up to a multiplicative factor that depends mainly on the cellular frequency reuse), where the coded caching gain and the L-fold spatial multiplexing act additively. This is another manifestation of the fact that spatial reuse is a key approach to tackle the subpacketization order problem of coded caching
  6. Keywords:
  7. Antennas ; Information theory ; Cellular frequencies ; Cellular network ; File delivery ; MIMO networks ; Multiplicative factors ; Order problems ; Spatial multiplexing ; Spatial reuse ; Linear networks
  8. Source: 2019 IEEE International Symposium on Information Theory, ISIT 2019, 7 July 2019 through 12 July 2019 ; Volume 2019-July , 2019 , Pages 2982-2986 ; 21578095 (ISSN) ; 9781538692912 (ISBN)
  9. URL: https://ieeexplore.ieee.org/abstract/document/8849460