The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Nous avons développé un nouveau schéma de planification de paquets de liaison descendante pour un système OFDMA multi-utilisateurs dans lequel un sous-canal peut être multiplexé dans le temps entre plusieurs utilisateurs. Ce système, appelé équité proportionnelle basée sur la matrice, peut fournir un débit système élevé tout en garantissant l'équité. Le schéma est basé sur une fonction utilitaire d'équité proportionnelle (PF) et peut être appliqué à n'importe lequel des planificateurs basés sur PF. Notre planificateur explore la diversité multicanal multi-utilisateur en utilisant une matrice bidimensionnelle combinant la sélection des utilisateurs, l'attribution des sous-canaux et l'attribution des créneaux horaires. De plus, contrairement à d’autres schémas basés sur PF, notre schéma considère les files d’attente à arriéré fini lors de l’attribution des créneaux horaires. Ce faisant, il peut exploiter la diversité multicanal multi-utilisateurs pour utiliser la bande passante de manière efficace et équitable. De plus, l'équité dans le domaine temporel est renforcée en limitant le nombre de plages horaires allouées. Des simulations intensives prenant en compte les files d'attente en retard et la mobilité des utilisateurs prouvent l'efficacité du système.
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Nararat RUANGCHAIJATUPON, Yusheng JI, "Performance Improvement of Proportional Fairness-Based Resource Allocation in OFDMA Downlink Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 9, pp. 2191-2199, September 2009, doi: 10.1587/transfun.E92.A.2191.
Abstract: We have developed a novel downlink packet scheduling scheme for a multiuser OFDMA system in which a subchannel can be time-multiplexed among multiple users. This scheme which is called Matrixed-based Proportional Fairness can provide a high system throughput while ensuring fairness. The scheme is based on a Proportional Fairness (PF) utility function and can be applied to any of the PF-based schedulers. Our scheduler explores multichannel multiuser diversity by using a two-dimensional matrix combining user selection, subchannel assignment, and time slot allocation. Furthermore, unlike other PF-based schemes, our scheme considers finitely backlogged queues during the time slot allocation. By doing so, it can exploit multichannel multiuser diversity to utilize bandwidth efficiently and with throughput fairness. Additionally, fairness in the time domain is enhanced by limiting the number of allocated time slots. Intensive simulations considering finitely backlogged queues and user mobility prove the scheme's effectiveness.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2191/_p
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@ARTICLE{e92-a_9_2191,
author={Nararat RUANGCHAIJATUPON, Yusheng JI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Performance Improvement of Proportional Fairness-Based Resource Allocation in OFDMA Downlink Systems},
year={2009},
volume={E92-A},
number={9},
pages={2191-2199},
abstract={We have developed a novel downlink packet scheduling scheme for a multiuser OFDMA system in which a subchannel can be time-multiplexed among multiple users. This scheme which is called Matrixed-based Proportional Fairness can provide a high system throughput while ensuring fairness. The scheme is based on a Proportional Fairness (PF) utility function and can be applied to any of the PF-based schedulers. Our scheduler explores multichannel multiuser diversity by using a two-dimensional matrix combining user selection, subchannel assignment, and time slot allocation. Furthermore, unlike other PF-based schemes, our scheme considers finitely backlogged queues during the time slot allocation. By doing so, it can exploit multichannel multiuser diversity to utilize bandwidth efficiently and with throughput fairness. Additionally, fairness in the time domain is enhanced by limiting the number of allocated time slots. Intensive simulations considering finitely backlogged queues and user mobility prove the scheme's effectiveness.},
keywords={},
doi={10.1587/transfun.E92.A.2191},
ISSN={1745-1337},
month={September},}
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TY - JOUR
TI - Performance Improvement of Proportional Fairness-Based Resource Allocation in OFDMA Downlink Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2191
EP - 2199
AU - Nararat RUANGCHAIJATUPON
AU - Yusheng JI
PY - 2009
DO - 10.1587/transfun.E92.A.2191
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 2009
AB - We have developed a novel downlink packet scheduling scheme for a multiuser OFDMA system in which a subchannel can be time-multiplexed among multiple users. This scheme which is called Matrixed-based Proportional Fairness can provide a high system throughput while ensuring fairness. The scheme is based on a Proportional Fairness (PF) utility function and can be applied to any of the PF-based schedulers. Our scheduler explores multichannel multiuser diversity by using a two-dimensional matrix combining user selection, subchannel assignment, and time slot allocation. Furthermore, unlike other PF-based schemes, our scheme considers finitely backlogged queues during the time slot allocation. By doing so, it can exploit multichannel multiuser diversity to utilize bandwidth efficiently and with throughput fairness. Additionally, fairness in the time domain is enhanced by limiting the number of allocated time slots. Intensive simulations considering finitely backlogged queues and user mobility prove the scheme's effectiveness.
ER -