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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Este artigo propõe um novo esquema de controle no qual a estação base (BS) controla a formação de feixe de transmissão do terminal em sistemas duplex por divisão de tempo (TDD)/multi-entrada e multi-saída (MIMO). No esquema proposto, a BS transmite sinais piloto usando feixes de downlink apropriados para instruir um terminal sobre a formação de feixe de transmissão do alvo. Usando respostas dos sinais piloto de downlink, o terminal pode realizar transmissão de formação de feixe próximo ao alvo. Nossa investigação teórica revela que a BS pode controlar a formação de feixe de transmissão de múltiplos terminais simultaneamente. Além disso, um processamento eficiente de sinal no terminal é investigado para obter peso preciso da formação de feixe de transmissão em ambientes ruidosos. Os resultados numéricos mostram que o terminal pode realizar formação de feixe de transmissão precisa perto do alvo em ambientes ruidosos. Também é mostrado que a quantidade de sinalização de controle de downlink no esquema proposto é muito menor do que na abordagem baseada em livro de códigos.
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Yoshitaka HARA, Kazuyoshi OSHIMA, "Remote Control of Transmit Beamforming for Multiuser TDD/MIMO Systems" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 6, pp. 1922-1931, June 2008, doi: 10.1093/ietcom/e91-b.6.1922.
Abstract: This paper proposes a new control scheme in which the base station (BS) controls terminal's transmit beamforming in time-division duplex (TDD)/multi-input multi-output (MIMO) systems. In the proposed scheme, the BS transmits pilot signals using appropriate downlink beams to instruct a terminal on target transmit beamforming. Using responses of the downlink pilot signals, the terminal can perform transmit beamforming close to the target one. Our theoretical investigation reveals that the BS can control multiple terminals' transmit beamforming simultaneously. Furthermore, an efficient signal processing at the terminal is investigated to obtain precise weight of transmit beamforming in noise environments. Numerical results show that the terminal can perform precise transmit beamforming close to the target one in noise environments. It is also shown that the amount of downlink control signalling in the proposed scheme is much less than that in codebook-based approach.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.6.1922/_p
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@ARTICLE{e91-b_6_1922,
author={Yoshitaka HARA, Kazuyoshi OSHIMA, },
journal={IEICE TRANSACTIONS on Communications},
title={Remote Control of Transmit Beamforming for Multiuser TDD/MIMO Systems},
year={2008},
volume={E91-B},
number={6},
pages={1922-1931},
abstract={This paper proposes a new control scheme in which the base station (BS) controls terminal's transmit beamforming in time-division duplex (TDD)/multi-input multi-output (MIMO) systems. In the proposed scheme, the BS transmits pilot signals using appropriate downlink beams to instruct a terminal on target transmit beamforming. Using responses of the downlink pilot signals, the terminal can perform transmit beamforming close to the target one. Our theoretical investigation reveals that the BS can control multiple terminals' transmit beamforming simultaneously. Furthermore, an efficient signal processing at the terminal is investigated to obtain precise weight of transmit beamforming in noise environments. Numerical results show that the terminal can perform precise transmit beamforming close to the target one in noise environments. It is also shown that the amount of downlink control signalling in the proposed scheme is much less than that in codebook-based approach.},
keywords={},
doi={10.1093/ietcom/e91-b.6.1922},
ISSN={1745-1345},
month={June},}
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TY - JOUR
TI - Remote Control of Transmit Beamforming for Multiuser TDD/MIMO Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 1922
EP - 1931
AU - Yoshitaka HARA
AU - Kazuyoshi OSHIMA
PY - 2008
DO - 10.1093/ietcom/e91-b.6.1922
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2008
AB - This paper proposes a new control scheme in which the base station (BS) controls terminal's transmit beamforming in time-division duplex (TDD)/multi-input multi-output (MIMO) systems. In the proposed scheme, the BS transmits pilot signals using appropriate downlink beams to instruct a terminal on target transmit beamforming. Using responses of the downlink pilot signals, the terminal can perform transmit beamforming close to the target one. Our theoretical investigation reveals that the BS can control multiple terminals' transmit beamforming simultaneously. Furthermore, an efficient signal processing at the terminal is investigated to obtain precise weight of transmit beamforming in noise environments. Numerical results show that the terminal can perform precise transmit beamforming close to the target one in noise environments. It is also shown that the amount of downlink control signalling in the proposed scheme is much less than that in codebook-based approach.
ER -