Coherent Ising Machine Based Optimal Channel Allocation and User Pairing in NOMA Networks

Teppei Otsuka, Komei Kurasawa, Zengchao Duan, Aohan Li, Koya Sato, Hiroki Takesue, Kazuyuki Aihara, Kensuke Inaba, Mikio Hasegawa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Non-orthogonal multiple access (NOMA) can multiplex different users on a single channel by applying superposition coding at the transmitter and Successive Interference Cancellation (SIC) at the receiver. It is considered to be an important technology for next generation wireless communications to achieve high throughput and large-scale connectivity. To take advantage of the effectiveness of NOMA, in addition to pairing users using criteria based on distance and power allocation, a key question is how to optimally allocate resources such as channels to users. Previous studies have discussed user pairing schemes and power allocation algorithms for NOMA systems, but the key issue is how to allocate the channels. Coherent Ising Machine (CIM) is an Ising computer that can solve NP-hard combinatorial optimization problems at high speed. CIM can run optimization algorithms based on mutually coupled neural networks and can be applied to a variety of optimization problems. In this paper, we proposed a CIM-based optimization method for user pairing and channel allocation in NOMA systems. Simulation results show that the CIM-based optimization can achieve superior performance of the NOMA system.

Original languageEnglish
Title of host publication3rd International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages401-406
Number of pages6
ISBN (Electronic)9781728176383
DOIs
Publication statusPublished - 13 Apr 2021
Event3rd International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2021 - Jeju Island, Korea, Republic of
Duration: 13 Apr 202116 Apr 2021

Publication series

Name3rd International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2021

Conference

Conference3rd International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2021
Country/TerritoryKorea, Republic of
CityJeju Island
Period13/04/2116/04/21

Keywords

  • Coherent Ising Machine
  • Mutually Connected Neural Network
  • Non-orthogonal multiple access
  • Resource Allocation

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