Mode selection between index coding and superposition coding in cache-based NOMA networks

Yaru Fu, Ye Liu, Hong Wang, Zheng Shi, Yuanwei Liu

Research output: Contribution to journalArticle

2 Citations (Scopus)
2 Downloads (Pure)

Abstract

By analytically showing that index coding (IC) is more power efficient than superposition coding (SC) when appropriate caching contents are available for a pair of users, we propose a sub-optimal joint user clustering and power allocation scheme for a single-cell downlink non-orthogonal multiple access network with caching memory at the receivers that alternate between IC and SC. Simulation studies demonstrate that the proposed scheme significantly reduces the transmission power when compared with the benchmark scheme that only allows SC.
Original languageEnglish
Article number8610284
Pages (from-to)478-481
Number of pages4
JournalIEEE Communications Letters
Volume23
Issue number3
Early online date11 Jan 2019
DOIs
Publication statusPublished - Mar 2019
Externally publishedYes

Fingerprint

Power transmission
Cache
Superposition
Coding
Data storage equipment
Caching
Power Allocation
Multiple Access
Alternate
Receiver
Simulation Study
Clustering
Benchmark
Cell
Demonstrate

Bibliographical note

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

  • Caching
  • NOMA
  • index coding (IC)
  • optimal power control
  • superposition coding (SC)
  • user clustering

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Mode selection between index coding and superposition coding in cache-based NOMA networks. / Fu, Yaru; Liu, Ye; Wang, Hong; Shi, Zheng; Liu, Yuanwei.

In: IEEE Communications Letters, Vol. 23, No. 3, 8610284, 03.2019, p. 478-481.

Research output: Contribution to journalArticle

Fu, Yaru ; Liu, Ye ; Wang, Hong ; Shi, Zheng ; Liu, Yuanwei. / Mode selection between index coding and superposition coding in cache-based NOMA networks. In: IEEE Communications Letters. 2019 ; Vol. 23, No. 3. pp. 478-481.
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