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
Este artigo propõe um método para melhorar a recepção de transmissão digital via satélite em um veículo em movimento. De acordo com alguns estudos, as antenas utilizadas para recepção móvel serão menores na próxima geração e a recepção será mais difícil devido ao desvanecimento do canal multipercurso com atrasos em uma baixa relação portadora-ruído. Abordagens comumente usadas para reduzir a interferência entre símbolos causada por um canal multipercurso com desvanecimento com atrasos são sequências piloto e recepção de diversidade. A radiodifusão digital por satélite, no entanto, não transmite sequências piloto para estimativa de canal e não é possível instalar múltiplas antenas num veículo. Este artigo não propõe nenhuma mudança nos padrões de transmissão, mas discute como processar os sinais digitais de satélite atualmente disponíveis para obter melhores resultados. Nosso método não depende de sequências piloto ou recepção de diversidade, mas consiste em estimativa de canal e métodos de inferência estocástica. Para cada tarefa, dois métodos são propostos. Os métodos de estimativa de máxima verossimilhança e correspondência de estatísticas de ordem superior são propostos para a estimativa, e os métodos marginais com os métodos de inferência de probabilidade conjunta são propostos para a inferência estocástica. As melhorias foram confirmadas através de experimentos com simulações numéricas e dados reais. Os custos computacionais também são discutidos para implementação futura.
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Masatoshi HAMADA, Shiro IKEDA, "Channel Estimation and Code Word Inference for Mobile Digital Satellite Broadcasting Reception" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 12, pp. 3886-3898, December 2008, doi: 10.1093/ietcom/e91-b.12.3886.
Abstract: This paper proposes a method of improving reception of digital satellite broadcasting in a moving vehicle. According to some studies, the antennas used for mobile reception will be smaller in the next generation and reception will be more difficult because of a fading multipath channel with delays in a low carrier-to-noise ratio. Commonly used approaches to reduce the inter symbol interference caused by a fading multipath channel with delays are pilot sequences and diversity reception. Digital satellite broadcasting, however, does not transmit pilot sequences for channel estimation and it is not possible to install multiple antennas in a vehicle. This paper does not propose any change to the broadcasting standards but discusses how to process currently available digital satellite signals to obtain better results. Our method does not rely on the pilot sequences or diversity reception, but consists of channel estimation and stochastic inference methods. For each task, two methods are proposed. The maximum likelihood estimation and higher order statistics matching methods are proposed for the estimation, and the marginal with the joint probability inference methods are proposed for the stochastic inference. The improvements were confirmed through experiments with numerical simulations and real data. The computational costs are also discussed for future implementation.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.12.3886/_p
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@ARTICLE{e91-b_12_3886,
author={Masatoshi HAMADA, Shiro IKEDA, },
journal={IEICE TRANSACTIONS on Communications},
title={Channel Estimation and Code Word Inference for Mobile Digital Satellite Broadcasting Reception},
year={2008},
volume={E91-B},
number={12},
pages={3886-3898},
abstract={This paper proposes a method of improving reception of digital satellite broadcasting in a moving vehicle. According to some studies, the antennas used for mobile reception will be smaller in the next generation and reception will be more difficult because of a fading multipath channel with delays in a low carrier-to-noise ratio. Commonly used approaches to reduce the inter symbol interference caused by a fading multipath channel with delays are pilot sequences and diversity reception. Digital satellite broadcasting, however, does not transmit pilot sequences for channel estimation and it is not possible to install multiple antennas in a vehicle. This paper does not propose any change to the broadcasting standards but discusses how to process currently available digital satellite signals to obtain better results. Our method does not rely on the pilot sequences or diversity reception, but consists of channel estimation and stochastic inference methods. For each task, two methods are proposed. The maximum likelihood estimation and higher order statistics matching methods are proposed for the estimation, and the marginal with the joint probability inference methods are proposed for the stochastic inference. The improvements were confirmed through experiments with numerical simulations and real data. The computational costs are also discussed for future implementation.},
keywords={},
doi={10.1093/ietcom/e91-b.12.3886},
ISSN={1745-1345},
month={December},}
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TY - JOUR
TI - Channel Estimation and Code Word Inference for Mobile Digital Satellite Broadcasting Reception
T2 - IEICE TRANSACTIONS on Communications
SP - 3886
EP - 3898
AU - Masatoshi HAMADA
AU - Shiro IKEDA
PY - 2008
DO - 10.1093/ietcom/e91-b.12.3886
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2008
AB - This paper proposes a method of improving reception of digital satellite broadcasting in a moving vehicle. According to some studies, the antennas used for mobile reception will be smaller in the next generation and reception will be more difficult because of a fading multipath channel with delays in a low carrier-to-noise ratio. Commonly used approaches to reduce the inter symbol interference caused by a fading multipath channel with delays are pilot sequences and diversity reception. Digital satellite broadcasting, however, does not transmit pilot sequences for channel estimation and it is not possible to install multiple antennas in a vehicle. This paper does not propose any change to the broadcasting standards but discusses how to process currently available digital satellite signals to obtain better results. Our method does not rely on the pilot sequences or diversity reception, but consists of channel estimation and stochastic inference methods. For each task, two methods are proposed. The maximum likelihood estimation and higher order statistics matching methods are proposed for the estimation, and the marginal with the joint probability inference methods are proposed for the stochastic inference. The improvements were confirmed through experiments with numerical simulations and real data. The computational costs are also discussed for future implementation.
ER -