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
Vários esquemas de coordenação de interferência intercelular foram propostos para mitigar o problema de interferência intercelular para sistemas de acesso múltiplo por divisão ortogonal de frequência (OFDMA) e entre eles, a reutilização parcial de frequência é considerada uma das abordagens mais promissoras. Neste artigo, propomos um esquema de mitigação de interferência entre células para um sistema downlink OFDMA, que faz uso tanto de reutilização parcial de frequência quanto de soft handover. A ideia básica deste esquema híbrido é selecionar dinamicamente entre um esquema de reutilização parcial de frequência e um esquema de transferência suave para fornecer melhor qualidade de sinal para usuários de borda de célula. Em comparação com o esquema padrão de reutilização de frequência parcial, os resultados da simulação mostram que aproximadamente um quarto dos usuários da borda da célula podem obter melhorias na qualidade do sinal, bem como na eficiência espectral do link, usando o esquema híbrido proposto. Observamos também que, usando nossa abordagem, há um ganho significativo de rendimento na borda da célula em relação ao esquema padrão de reutilização de frequência parcial. Além disso, com base em um critério de justiça de taxa de dados bem definido, mostramos que nosso método atinge maior capacidade geral do sistema em comparação com o esquema padrão de reutilização parcial de frequência.
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Che-Sheng CHIU, Chia-Chi HUANG, "A Hybrid Inter-Cell Interference Mitigation Scheme for an OFDMA Downlink System" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 1, pp. 73-81, January 2010, doi: 10.1587/transcom.E93.B.73.
Abstract: A number of inter-cell interference coordination schemes have been proposed to mitigate the inter-cell interference problem for orthogonal frequency division multiple access (OFDMA) systems and among them, partial frequency reuse is considered one of the most promising approaches. In this paper, we propose an inter-cell interference mitigation scheme for an OFDMA downlink system, which makes use of both partial frequency reuse and soft handover. The basic idea of this hybrid scheme is to dynamically select between a partial frequency reuse scheme and a soft handover scheme to provide better signal quality for cell edge users. Compared with the standard partial frequency reuse scheme, simulation results show that approximately one quarter of cell edge users can get improvements in signal quality as well as link spectral efficiency from using the proposed hybrid scheme. We also observe that by using our approach, there is a significant cell edge throughput gain over the standard partial frequency reuse scheme. Furthermore, based on a well defined data rate fairness criterion, we show that our method achieves higher overall system capacity as compared with the standard partial frequency reuse scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.73/_p
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@ARTICLE{e93-b_1_73,
author={Che-Sheng CHIU, Chia-Chi HUANG, },
journal={IEICE TRANSACTIONS on Communications},
title={A Hybrid Inter-Cell Interference Mitigation Scheme for an OFDMA Downlink System},
year={2010},
volume={E93-B},
number={1},
pages={73-81},
abstract={A number of inter-cell interference coordination schemes have been proposed to mitigate the inter-cell interference problem for orthogonal frequency division multiple access (OFDMA) systems and among them, partial frequency reuse is considered one of the most promising approaches. In this paper, we propose an inter-cell interference mitigation scheme for an OFDMA downlink system, which makes use of both partial frequency reuse and soft handover. The basic idea of this hybrid scheme is to dynamically select between a partial frequency reuse scheme and a soft handover scheme to provide better signal quality for cell edge users. Compared with the standard partial frequency reuse scheme, simulation results show that approximately one quarter of cell edge users can get improvements in signal quality as well as link spectral efficiency from using the proposed hybrid scheme. We also observe that by using our approach, there is a significant cell edge throughput gain over the standard partial frequency reuse scheme. Furthermore, based on a well defined data rate fairness criterion, we show that our method achieves higher overall system capacity as compared with the standard partial frequency reuse scheme.},
keywords={},
doi={10.1587/transcom.E93.B.73},
ISSN={1745-1345},
month={January},}
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TY - JOUR
TI - A Hybrid Inter-Cell Interference Mitigation Scheme for an OFDMA Downlink System
T2 - IEICE TRANSACTIONS on Communications
SP - 73
EP - 81
AU - Che-Sheng CHIU
AU - Chia-Chi HUANG
PY - 2010
DO - 10.1587/transcom.E93.B.73
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2010
AB - A number of inter-cell interference coordination schemes have been proposed to mitigate the inter-cell interference problem for orthogonal frequency division multiple access (OFDMA) systems and among them, partial frequency reuse is considered one of the most promising approaches. In this paper, we propose an inter-cell interference mitigation scheme for an OFDMA downlink system, which makes use of both partial frequency reuse and soft handover. The basic idea of this hybrid scheme is to dynamically select between a partial frequency reuse scheme and a soft handover scheme to provide better signal quality for cell edge users. Compared with the standard partial frequency reuse scheme, simulation results show that approximately one quarter of cell edge users can get improvements in signal quality as well as link spectral efficiency from using the proposed hybrid scheme. We also observe that by using our approach, there is a significant cell edge throughput gain over the standard partial frequency reuse scheme. Furthermore, based on a well defined data rate fairness criterion, we show that our method achieves higher overall system capacity as compared with the standard partial frequency reuse scheme.
ER -