Cargando…
Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks †
Low density signature orthogonal frequency division multiplexing (LDS-OFDM), one type of non-orthogonal multiple access (NOMA), is a special case of multi-carrier code division multiple access (MC-CDMA). In LDS-OFDM, each user is allowed to spread its symbols in a small set of subcarriers, and there...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514839/ https://www.ncbi.nlm.nih.gov/pubmed/31018612 http://dx.doi.org/10.3390/s19081921 |
_version_ | 1783417953250705408 |
---|---|
author | Meylani, Linda Kurniawan, Adit Arifianto, M. Sigit |
author_facet | Meylani, Linda Kurniawan, Adit Arifianto, M. Sigit |
author_sort | Meylani, Linda |
collection | PubMed |
description | Low density signature orthogonal frequency division multiplexing (LDS-OFDM), one type of non-orthogonal multiple access (NOMA), is a special case of multi-carrier code division multiple access (MC-CDMA). In LDS-OFDM, each user is allowed to spread its symbols in a small set of subcarriers, and there is only a small group of users that are permitted to share the same subcarrier. In this paper, we study the resource allocation for LDS-OFDM as the multiple access model in cognitive radio networks. In our scheme, SUs are allocated to certain [Formula: see text] subcarriers based on minimum interference or higher SINR in each subcarrier. To overcome the problem where SUs were allocated less than the [Formula: see text] subcarriers, we propose interference limit-based resource allocation with the fairness metric (ILRA-FM). Simulation results show that, compared to the ILRA algorithm, the ILRA-FM algorithm has a lower outage probability and higher fairness metric value and also a higher throughput fairness index. |
format | Online Article Text |
id | pubmed-6514839 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-65148392019-05-30 Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † Meylani, Linda Kurniawan, Adit Arifianto, M. Sigit Sensors (Basel) Article Low density signature orthogonal frequency division multiplexing (LDS-OFDM), one type of non-orthogonal multiple access (NOMA), is a special case of multi-carrier code division multiple access (MC-CDMA). In LDS-OFDM, each user is allowed to spread its symbols in a small set of subcarriers, and there is only a small group of users that are permitted to share the same subcarrier. In this paper, we study the resource allocation for LDS-OFDM as the multiple access model in cognitive radio networks. In our scheme, SUs are allocated to certain [Formula: see text] subcarriers based on minimum interference or higher SINR in each subcarrier. To overcome the problem where SUs were allocated less than the [Formula: see text] subcarriers, we propose interference limit-based resource allocation with the fairness metric (ILRA-FM). Simulation results show that, compared to the ILRA algorithm, the ILRA-FM algorithm has a lower outage probability and higher fairness metric value and also a higher throughput fairness index. MDPI 2019-04-23 /pmc/articles/PMC6514839/ /pubmed/31018612 http://dx.doi.org/10.3390/s19081921 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Meylani, Linda Kurniawan, Adit Arifianto, M. Sigit Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † |
title | Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † |
title_full | Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † |
title_fullStr | Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † |
title_full_unstemmed | Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † |
title_short | Radio Resource Allocation with The Fairness Metric for Low Density Signature OFDM in Underlay Cognitive Radio Networks † |
title_sort | radio resource allocation with the fairness metric for low density signature ofdm in underlay cognitive radio networks † |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514839/ https://www.ncbi.nlm.nih.gov/pubmed/31018612 http://dx.doi.org/10.3390/s19081921 |
work_keys_str_mv | AT meylanilinda radioresourceallocationwiththefairnessmetricforlowdensitysignatureofdminunderlaycognitiveradionetworks AT kurniawanadit radioresourceallocationwiththefairnessmetricforlowdensitysignatureofdminunderlaycognitiveradionetworks AT arifiantomsigit radioresourceallocationwiththefairnessmetricforlowdensitysignatureofdminunderlaycognitiveradionetworks |