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Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks
To increase the average achievable rates per user for cluster-edge users, a rotating clustering scheme for the downlink of a coordinated multicell multiuser multiple-input multiple-output system is proposed in this paper and analyzed in two network layouts. In the multicell heterogeneous cellular ne...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6566211/ https://www.ncbi.nlm.nih.gov/pubmed/31258613 http://dx.doi.org/10.1186/s13638-018-1061-1 |
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author | Purmehdi, Hakimeh Elliott, Robert C. Krzymień, Witold A. Melzer, Jordan |
author_facet | Purmehdi, Hakimeh Elliott, Robert C. Krzymień, Witold A. Melzer, Jordan |
author_sort | Purmehdi, Hakimeh |
collection | PubMed |
description | To increase the average achievable rates per user for cluster-edge users, a rotating clustering scheme for the downlink of a coordinated multicell multiuser multiple-input multiple-output system is proposed in this paper and analyzed in two network layouts. In the multicell heterogeneous cellular network, base stations of a cluster cooperate to transmit data signals to the users within the cluster; rotating cluster patterns enable all users to be nearer the cluster center in at least one of the patterns. Considering cellular layouts with three or six macrocells per site, different rotating patterns of clusters are proposed and the system performance with the proposed sets of clustering patterns is investigated using a simulated annealing algorithm for user scheduling and successive zero-forcing dirty paper coding as the precoding method. The rotating clustering scheme is less complex than fully dynamic clustering, and it is primarily designed to improve the throughput of cluster-edge users. As an extra secondary benefit, it is also capable of slightly improving the average achievable sum rate of the network overall. The effectiveness of the proposed methods with two different scheduling metrics, namely throughput maximization and proportionally fair scheduling, is of interest in this work. Moreover, the speed of rotation affects the performance of the system; the higher the speed of rotation, the more frequently any specific users will be nearer the cluster center. Our simulations demonstrate the effectiveness of the proposed rotational approach and determine the speed of rotation beyond which any additional performance gains become negligible. |
format | Online Article Text |
id | pubmed-6566211 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-65662112019-06-28 Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks Purmehdi, Hakimeh Elliott, Robert C. Krzymień, Witold A. Melzer, Jordan EURASIP J Wirel Commun Netw Research To increase the average achievable rates per user for cluster-edge users, a rotating clustering scheme for the downlink of a coordinated multicell multiuser multiple-input multiple-output system is proposed in this paper and analyzed in two network layouts. In the multicell heterogeneous cellular network, base stations of a cluster cooperate to transmit data signals to the users within the cluster; rotating cluster patterns enable all users to be nearer the cluster center in at least one of the patterns. Considering cellular layouts with three or six macrocells per site, different rotating patterns of clusters are proposed and the system performance with the proposed sets of clustering patterns is investigated using a simulated annealing algorithm for user scheduling and successive zero-forcing dirty paper coding as the precoding method. The rotating clustering scheme is less complex than fully dynamic clustering, and it is primarily designed to improve the throughput of cluster-edge users. As an extra secondary benefit, it is also capable of slightly improving the average achievable sum rate of the network overall. The effectiveness of the proposed methods with two different scheduling metrics, namely throughput maximization and proportionally fair scheduling, is of interest in this work. Moreover, the speed of rotation affects the performance of the system; the higher the speed of rotation, the more frequently any specific users will be nearer the cluster center. Our simulations demonstrate the effectiveness of the proposed rotational approach and determine the speed of rotation beyond which any additional performance gains become negligible. Springer International Publishing 2018-03-14 2018 /pmc/articles/PMC6566211/ /pubmed/31258613 http://dx.doi.org/10.1186/s13638-018-1061-1 Text en © The Author(s) 2018 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License(http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Research Purmehdi, Hakimeh Elliott, Robert C. Krzymień, Witold A. Melzer, Jordan Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks |
title | Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks |
title_full | Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks |
title_fullStr | Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks |
title_full_unstemmed | Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks |
title_short | Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks |
title_sort | rotating cluster mechanism for coordinated heterogeneous mimo cellular networks |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6566211/ https://www.ncbi.nlm.nih.gov/pubmed/31258613 http://dx.doi.org/10.1186/s13638-018-1061-1 |
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