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
O Relay, que promete melhorar o desempenho das futuras redes de comunicação, é uma das técnicas mais promissoras para sistemas IMT-Advanced. Neste artigo, são investigados canais de retransmissão de múltiplas entradas e múltiplas saídas (MIMO) baseados em medições externas. Focamos na ligação entre a estação base (BS) e a estação retransmissora (RS), bem como na ligação entre a RS e a estação móvel (MS). Primeiramente, os canais foram medidos utilizando uma sirene de canal em tempo real na faixa de frequência IMT-Advanced (2.35 GHz com largura de banda de 50 MHz). Em seguida, os parâmetros dos componentes multipercurso (MPCs) são extraídos utilizando algoritmo de expectativa generalizada alternada em espaço. Os parâmetros MPC dos dois links são analisados e comparados estatisticamente. A polarização e as estatísticas espaciais são obtidas. As tendências do espectro de azimute de potência (PAS) e discriminação de polarização cruzada (XPD) com a separação entre o RS e o MS são investigadas. Com base no PAS, são analisados os mecanismos de propagação de cenários com e sem linha de visada. Além disso, é derivada uma expressão aproximada de correlação de canal em forma fechada. Os impactos do PAS e do XPD na correlação do canal são estudados. Por fim, são apresentadas algumas diretrizes para as configurações de antenas do BS, do RS e do MS. Os resultados revelam as diferentes características dos canais de retransmissão e fornecem a base para a implantação prática de sistemas de retransmissão.
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Xin NIE, Jianhua ZHANG, Ping ZHANG, "Polarization and Spatial Statistics of Wideband MIMO Relay Channels in Urban Environment at 2.35 GHz" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 1, pp. 139-149, January 2011, doi: 10.1587/transcom.E94.B.139.
Abstract: Relay, which promises to enhance the performance of future communication networks, is one of the most promising techniques for IMT-Advanced systems. In this paper, multiple-input multiple-output (MIMO) relay channels based on outdoor measurements are investigated. We focus on the link between the base station (BS) and the relay station (RS) as well as the link between the RS and the mobile station (MS). First of all, the channels were measured employing a real-time channel sounder in IMT-Advanced frequency band (2.35 GHz with 50 MHz bandwidth). Then, the parameters of multipath components (MPCs) are extracted utilizing space-alternating generalized expectation algorithm. MPC parameters of the two links are statistically analyzed and compared. The polarization and spatial statistics are gotten. The trends of power azimuth spectrum (PAS) and cross-polarization discrimination (XPD) with the separation between the RS and the MS are investigated. Based on the PAS, the propagation mechanisms of line-of-sight and non-line-of-sight scenarios are analyzed. Furthermore, an approximate closed-form expression of channel correlation is derived. The impacts of PAS and XPD on the channel correlation are studied. Finally, some guidelines for the antenna configurations of the BS, the RS and the MS are presented. The results reveal the different characteristics of relay channels and provide the basis for the practical deployment of relay systems.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.139/_p
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@ARTICLE{e94-b_1_139,
author={Xin NIE, Jianhua ZHANG, Ping ZHANG, },
journal={IEICE TRANSACTIONS on Communications},
title={Polarization and Spatial Statistics of Wideband MIMO Relay Channels in Urban Environment at 2.35 GHz},
year={2011},
volume={E94-B},
number={1},
pages={139-149},
abstract={Relay, which promises to enhance the performance of future communication networks, is one of the most promising techniques for IMT-Advanced systems. In this paper, multiple-input multiple-output (MIMO) relay channels based on outdoor measurements are investigated. We focus on the link between the base station (BS) and the relay station (RS) as well as the link between the RS and the mobile station (MS). First of all, the channels were measured employing a real-time channel sounder in IMT-Advanced frequency band (2.35 GHz with 50 MHz bandwidth). Then, the parameters of multipath components (MPCs) are extracted utilizing space-alternating generalized expectation algorithm. MPC parameters of the two links are statistically analyzed and compared. The polarization and spatial statistics are gotten. The trends of power azimuth spectrum (PAS) and cross-polarization discrimination (XPD) with the separation between the RS and the MS are investigated. Based on the PAS, the propagation mechanisms of line-of-sight and non-line-of-sight scenarios are analyzed. Furthermore, an approximate closed-form expression of channel correlation is derived. The impacts of PAS and XPD on the channel correlation are studied. Finally, some guidelines for the antenna configurations of the BS, the RS and the MS are presented. The results reveal the different characteristics of relay channels and provide the basis for the practical deployment of relay systems.},
keywords={},
doi={10.1587/transcom.E94.B.139},
ISSN={1745-1345},
month={January},}
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TY - JOUR
TI - Polarization and Spatial Statistics of Wideband MIMO Relay Channels in Urban Environment at 2.35 GHz
T2 - IEICE TRANSACTIONS on Communications
SP - 139
EP - 149
AU - Xin NIE
AU - Jianhua ZHANG
AU - Ping ZHANG
PY - 2011
DO - 10.1587/transcom.E94.B.139
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2011
AB - Relay, which promises to enhance the performance of future communication networks, is one of the most promising techniques for IMT-Advanced systems. In this paper, multiple-input multiple-output (MIMO) relay channels based on outdoor measurements are investigated. We focus on the link between the base station (BS) and the relay station (RS) as well as the link between the RS and the mobile station (MS). First of all, the channels were measured employing a real-time channel sounder in IMT-Advanced frequency band (2.35 GHz with 50 MHz bandwidth). Then, the parameters of multipath components (MPCs) are extracted utilizing space-alternating generalized expectation algorithm. MPC parameters of the two links are statistically analyzed and compared. The polarization and spatial statistics are gotten. The trends of power azimuth spectrum (PAS) and cross-polarization discrimination (XPD) with the separation between the RS and the MS are investigated. Based on the PAS, the propagation mechanisms of line-of-sight and non-line-of-sight scenarios are analyzed. Furthermore, an approximate closed-form expression of channel correlation is derived. The impacts of PAS and XPD on the channel correlation are studied. Finally, some guidelines for the antenna configurations of the BS, the RS and the MS are presented. The results reveal the different characteristics of relay channels and provide the basis for the practical deployment of relay systems.
ER -