A Linear-Time Grouping Algorithm for F-RANs with Index Coding and Cache-Aided NOMA

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Detail(s)

Original languageEnglish
Title of host publicationICC 2021 - IEEE International Conference on Communications
Subtitle of host publicationProceedings
PublisherIEEE
ISBN (Electronic)9781728171227
ISBN (Print)9781728171234
Publication statusPublished - 2021

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607
ISSN (Electronic)1938-1883

Conference

Title2021 IEEE International Conference on Communications (ICC 2021)
LocationVirtual
PlaceCanada
CityMontreal, QC
Period14 - 23 June 2021

Abstract

Both index coding and non-orthogonal multiple access (NOMA) are useful techniques for a transmitter to send information to multiple cache-enabled receivers. In former works, either index coding or cache-aided NOMA is applied in the system, while the combination of index coding and cache-aided NOMA has not been fully investigated. This work is the first attempt to integrate these two techniques. A two-phase transmission algorithm is proposed to first partition receivers into index coding groups and next pair these groups up for superposition coding. Cache-aided interference cancellation (CIC) is employed at the receiver. This new method is applied to a cache-enabled fog radio access network (F-RAN). Besides, a distinct-file caching scheme with imbalanced cache size at fog access points (F-APs) is proposed. For this particular caching scheme, the two-phase algorithm can be fine-tuned in a way so that its time complexity becomes linear in the number of F-APs, which is very fast and particularly desirable from a practical viewpoint. Furthermore, simulation results show that our proposed method can significantly reduce the power consumption for transmissions over the fronthaul link of the F-RAN.

Research Area(s)

  • cache-aided interference cancellation, index coding, Non-orthogonal multiple access, power minimization

Citation Format(s)

A Linear-Time Grouping Algorithm for F-RANs with Index Coding and Cache-Aided NOMA. / Guo, Yongna; Mostafa, Salwa; Zou, Jun; Sung, Chi Wan.

ICC 2021 - IEEE International Conference on Communications: Proceedings. IEEE, 2021. (IEEE International Conference on Communications).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review