Optimal power allocation in cache-aided non-orthogonal multiple access systems

Khai Nguyen Doan, Wonjae Shin, Mojtaba Vaezi, H. Vincent Poor, Tony Q.S. Quek

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

5 Scopus citations

Abstract

This work combines non-orthogonal multiple access (NOMA) and caching, two prominent techniques for future communication networks. Specifically, a cache-aided cellular network with Rayleigh fading channels is analyzed. By exploiting the channel distribution, users requests, and cache contents in given time, an optimal power allocation policy for the superposed signal is derived. The goal is to maximize the system success probability, i.e., the probability that all users can successfully decode their desired signals. The analysis highlights the benefits of introducing caching to NOMA-based systems. Simulation results confirm the analysis and demonstrate the efficiency of the proposed power allocation.

Original languageEnglish (US)
Title of host publication2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538643280
DOIs
StatePublished - Jul 3 2018
Event2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Kansas City, United States
Duration: May 20 2018May 24 2018

Publication series

Name2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings

Other

Other2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018
CountryUnited States
CityKansas City
Period5/20/185/24/18

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture

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    Doan, K. N., Shin, W., Vaezi, M., Poor, H. V., & Quek, T. Q. S. (2018). Optimal power allocation in cache-aided non-orthogonal multiple access systems. In 2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings (pp. 1-6). (2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCW.2018.8403606