MISO Cache-Aided Communication with Reduced Subpacketization

Soheil Mohajer, Itsik Bergel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations


We present a novel low complexity scheme for cache aided communication, where a multi-antenna base station serves multiple single-antenna mobiles. The scheme is based on transmission of coded messages to disjoint groups of users simultaneously. Compared to the state-of-the-art, the proposed scheme significantly reduces the transmission and decoding complexity. Furthermore, it substantially relaxes the subpacketization level, and involves a transmission of much smaller number of packets in each time block. The proposed scheme achieves the same degrees of freedom (DoF) as the best known scheme, but, it suffers from a performance degradation of about 1.5dB due to a loss of diversity. Nevertheless, the loss is acceptable as the reduction in complexity allows a practical implementation of this scheme even for a large number of users.

Original languageEnglish (US)
Title of host publication2020 IEEE International Conference on Communications, ICC 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728150895
StatePublished - Jun 2020
Event2020 IEEE International Conference on Communications, ICC 2020 - Dublin, Ireland
Duration: Jun 7 2020Jun 11 2020

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607


Conference2020 IEEE International Conference on Communications, ICC 2020

Bibliographical note

Publisher Copyright:
© 2020 IEEE.


  • MISO
  • cache-aided communication
  • complexity
  • subpacketization level


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