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Paper Abstract and Keywords
Presentation 2025-07-31 10:45
NOMA User Selection Method Considering Intra/Inter-cell Interference Based on Determinant Point Process
Haruka Sakagawa, Tatsuaki Kimura (Doshisha Univ.) NS2025-59
Abstract (in Japanese) (See Japanese page) 
(in English) Non-orthogonal multiple access (NOMA), which multiplexes users over non-orthogonal wireless resources such as power domains, has attracted considerable attention for its potential to enhance network capacity in next-generation wireless systems. Because NOMA induces intra-cell interference among users during the successive interference cancellation (SIC) process, user selection and power control play a crucial role in improving overall network performance. However, these resource allocation problems are generally NP-hard, making the development of efficient control methods essential. For these problems, an efficient user selection method for NOMA networks based on a determinantal point process (DPP) has recently been proposed. However, the existing study focuses on a single-cell environment and is not applicable to multi-cell networks. In this study, we propose an efficient DPP-based user selection method for uplink multi-cell NOMA networks. A DPP over a finite set is generally characterized by a {it kernel matrix}, which represents the similarity between elements of the input set, and can generate a random subset that exhibits repulsiveness among elements. The proposed method applies a DPP over the set of all users in the network and selects a user subset using a polynomial-time DPP sampling algorithm. Furthermore, we design the kernel matrix of the DPP by taking into account both inter-cell and intra-cell interference, resulting in improved overall network performance. Finally, we evaluate the proposed method through simulations and demonstrate its effectiveness.
Keyword (in Japanese) (See Japanese page) 
(in English) Non-orthogonal multiple access (NOMA) / determinantal point process (DPP) / user selection / multi-cell environment / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 132, NS2025-59, pp. 34-39, July 2025.
Paper # NS2025-59 
Date of Issue 2025-07-23 (NS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2025-59

Conference Information
Committee SR RCS RCC SeMI NS RISING HCL  
Conference Date 2025-07-30 - 2025-08-01 
Place (in Japanese) (See Japanese page) 
Place (in English) MALIOS 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NS 
Conference Code 2025-07-SR-RCS-RCC-SeMI-NS-RISING-HCL 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) NOMA User Selection Method Considering Intra/Inter-cell Interference Based on Determinant Point Process 
Sub Title (in English)  
Keyword(1) Non-orthogonal multiple access (NOMA)  
Keyword(2) determinantal point process (DPP)  
Keyword(3) user selection  
Keyword(4) multi-cell environment  
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1st Author's Name Haruka Sakagawa  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Tatsuaki Kimura  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2025-07-31 10:45:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2025-59 
Volume (vol) vol.125 
Number (no) no.132 
Page pp.34-39 
#Pages 6 
Date of Issue 2025-07-23 (NS) 

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