Multicast beamformer design for coded caching

Tolli, A ; Sharif University of Technology

523 Viewed
  1. Type of Document: Article
  2. DOI: 10.1109/ISIT.2018.8437354
  3. Abstract:
  4. A single cell downlink scenario is considered where a multiple-antenna base station delivers contents to cache-enabled user terminals. Using the ideas from multi-server coded caching (CC) scheme developed for wired networks, a joint design of CC and general multicast beamforming is considered to benefit from spatial multiplexing gain, improved interference management and the global CC gain, simultaneously. The proposed multicast beamforming strategies utilize the multiantenna multicasting opportunities provided by the CC technique and optimally balance the detrimental impact of both noise and inter-stream interference from coded messages transmitted in parallel. The proposed scheme is shown to provide the same degrees-of-freedom at high SNR as the state-of-art methods and, in general, to perform significantly better than several baseline schemes including, the joint zero forcing and CC, max-min fair multicasting with CC, and basic unicasting with multiuser beamforming, © 2018 IEEE
  5. Keywords:
  6. Antennas ; Beamforming ; Degrees of freedom (mechanics) ; Network architecture ; Signal to noise ratio ; Beamformer design ; Coded messages ; Interference management ; Multiple antenna ; Multiuser beamforming ; Spatial multiplexing gain ; State-of-art methods ; User terminals ; Multicasting
  7. Source: IEEE International Symposium on Information Theory - Proceedings, 17 June 2018 through 22 June 2018 ; Volume 2018-June , 2018 , Pages 1914-1918 ; 21578095 (ISSN) ; 9781538647806 (ISBN)
  8. URL: https://ieeexplore.ieee.org/document/8362886