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
A solicitação de repetição automática híbrida (HARQ) é empregada para o downlink Evolved Universal Terrestrial Radio Access (E-UTRA). Cada equipamento de usuário (UE) envia seu ACK/NACK correspondente à recepção de dados de downlink para a estação base através de um canal físico de controle de uplink (PUCCH). Os sinais ACK/NACK do UE são primeiro difundidos de código pelas sequências de deslocamento cíclico (CS) e, em seguida, difundidos de código novamente pelas sequências de cobertura ortogonal (OC). Os sinais ACK/NACK de cada UE são multiplexados por meio de acesso múltiplo por divisão de código (CDMA), no entanto, é difícil para o projeto de código PUCCH convencional satisfazer a taxa de erro de bit (BER) necessária de 10-3 [1] em ambientes de desvanecimento rápido devido à interferência entre códigos (ICI) entre as sequências OC. Portanto, o gerenciamento de recursos do PUCCH é necessário dependendo da mobilidade dos UEs para maximizar o desempenho dos sinais ACK/NACK e a capacidade do PUCCH simultaneamente. Neste artigo, propomos um novo design de código para PUCCH, que pode suprimir os efeitos do ICI entre as sequências OC e, assim, simplificar o gerenciamento de recursos do PUCCH. As avaliações de simulação confirmam que o projeto de código proposto pode melhorar significativamente o desempenho dos sinais ACK/NACK via PUCCH em ambientes de desvanecimento rápido, e qualquer gerenciamento complicado de recursos baseado na mobilidade dos UEs não é necessário.
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Seigo NAKAO, Tomohumi TAKATA, Masaru FUKUOKA, Daichi IMAMURA, Katsuhiko HIRAMATSU, Kazuyuki MIYA, "A Novel Spreading Code Design for E-UTRA Uplink Control Channel and Its Performance" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 7, pp. 2433-2441, July 2009, doi: 10.1587/transcom.E92.B.2433.
Abstract: Hybrid automatic repeat request (HARQ) is employed for the Evolved Universal Terrestrial Radio Access (E-UTRA) downlink. Each user equipment (UE) sends its ACK/NACK corresponding to the downlink data reception to the base station via a physical uplink control channel (PUCCH). The ACK/NACK signals from the UE are first code spread by the cyclic shift (CS) sequences, and then code spread again by the orthogonal cover (OC) sequences. The ACK/NACK signals from each UE are multiplexed by means of code division multiple access (CDMA), however, it is difficult for the conventional PUCCH code design to satisfy the required bit error rate (BER) of 10-3 [1] in fast-fading environments because of inter-code interference (ICI) among the OC sequences. Therefore, resource management of PUCCH is required depending on the mobility of the UEs to maximize the performance of the ACK/NACK signals and the capacity of PUCCH simultaneously. In this paper, we propose a novel code design for PUCCH, which can suppress the effects of ICI among the OC sequences, and thus can simplify the resource management of PUCCH. The simulation evaluations confirm that the proposed code design can significantly improve the performance of the ACK/NACK signals via PUCCH in fast-fading environments, and any complicated resource management based on the mobility of the UEs are not necessary.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.2433/_p
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@ARTICLE{e92-b_7_2433,
author={Seigo NAKAO, Tomohumi TAKATA, Masaru FUKUOKA, Daichi IMAMURA, Katsuhiko HIRAMATSU, Kazuyuki MIYA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Novel Spreading Code Design for E-UTRA Uplink Control Channel and Its Performance},
year={2009},
volume={E92-B},
number={7},
pages={2433-2441},
abstract={Hybrid automatic repeat request (HARQ) is employed for the Evolved Universal Terrestrial Radio Access (E-UTRA) downlink. Each user equipment (UE) sends its ACK/NACK corresponding to the downlink data reception to the base station via a physical uplink control channel (PUCCH). The ACK/NACK signals from the UE are first code spread by the cyclic shift (CS) sequences, and then code spread again by the orthogonal cover (OC) sequences. The ACK/NACK signals from each UE are multiplexed by means of code division multiple access (CDMA), however, it is difficult for the conventional PUCCH code design to satisfy the required bit error rate (BER) of 10-3 [1] in fast-fading environments because of inter-code interference (ICI) among the OC sequences. Therefore, resource management of PUCCH is required depending on the mobility of the UEs to maximize the performance of the ACK/NACK signals and the capacity of PUCCH simultaneously. In this paper, we propose a novel code design for PUCCH, which can suppress the effects of ICI among the OC sequences, and thus can simplify the resource management of PUCCH. The simulation evaluations confirm that the proposed code design can significantly improve the performance of the ACK/NACK signals via PUCCH in fast-fading environments, and any complicated resource management based on the mobility of the UEs are not necessary.},
keywords={},
doi={10.1587/transcom.E92.B.2433},
ISSN={1745-1345},
month={July},}
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TY - JOUR
TI - A Novel Spreading Code Design for E-UTRA Uplink Control Channel and Its Performance
T2 - IEICE TRANSACTIONS on Communications
SP - 2433
EP - 2441
AU - Seigo NAKAO
AU - Tomohumi TAKATA
AU - Masaru FUKUOKA
AU - Daichi IMAMURA
AU - Katsuhiko HIRAMATSU
AU - Kazuyuki MIYA
PY - 2009
DO - 10.1587/transcom.E92.B.2433
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2009
AB - Hybrid automatic repeat request (HARQ) is employed for the Evolved Universal Terrestrial Radio Access (E-UTRA) downlink. Each user equipment (UE) sends its ACK/NACK corresponding to the downlink data reception to the base station via a physical uplink control channel (PUCCH). The ACK/NACK signals from the UE are first code spread by the cyclic shift (CS) sequences, and then code spread again by the orthogonal cover (OC) sequences. The ACK/NACK signals from each UE are multiplexed by means of code division multiple access (CDMA), however, it is difficult for the conventional PUCCH code design to satisfy the required bit error rate (BER) of 10-3 [1] in fast-fading environments because of inter-code interference (ICI) among the OC sequences. Therefore, resource management of PUCCH is required depending on the mobility of the UEs to maximize the performance of the ACK/NACK signals and the capacity of PUCCH simultaneously. In this paper, we propose a novel code design for PUCCH, which can suppress the effects of ICI among the OC sequences, and thus can simplify the resource management of PUCCH. The simulation evaluations confirm that the proposed code design can significantly improve the performance of the ACK/NACK signals via PUCCH in fast-fading environments, and any complicated resource management based on the mobility of the UEs are not necessary.
ER -