Low-Complexity MISO Cache-Aided Communication via Meta-User Scheduling

Soheil Mohajer, Itsik Bergel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present a novel low-complexity scheme for cache-aided communication, where a multi-antenna base station serves multiple single-antenna mobile users. The scheme is based on dividing the users into meta-users, where all users in the same meta-user store the same content during the placement phase. The inter meta-user interference is mitigated by using the cache as well as zero forcing, while the interference between users of the same meta-user is mitigated by zero forcing. Compared to the current state of the art, this scheme is feasible for a wider range of parameters. Moreover, while still achieving the optimal number of degrees of freedom (DoF), the proposed scheme imposes the same or less complexity compared to all the known schemes for each set of parameters. Consequently, the proposed scheme enables practical implementation of cache-aided communication for a large number of users.

Original languageEnglish
Title of host publicationWSA 2021 - 25th International ITG Workshop on Smart Antennas
PublisherVDE Verlag GmbH
Pages421-426
Number of pages6
ISBN (Electronic)9783800756889
StatePublished - 2021
Event25th International ITG Workshop on Smart Antennas, WSA 2021 - French Riviera, France
Duration: 10 Nov 202112 Nov 2021

Publication series

NameWSA 2021 - 25th International ITG Workshop on Smart Antennas

Conference

Conference25th International ITG Workshop on Smart Antennas, WSA 2021
Country/TerritoryFrance
CityFrench Riviera
Period10/11/2112/11/21

Keywords

  • Complexity
  • MISO
  • Subpacketization level
  • cache-aided communication

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Instrumentation

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