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 padrão WLAN IEEE802.11b emprega modulação de sequência direta/espectro espalhado (DS/SS). Com um receptor RAKE de amostragem fracionada, é possível obter diversidade e reduzir o BER na comunicação DS/SS. Para perceber a diversidade através da amostragem fracionária, a resposta ao impulso do canal deve ser estimada. Neste artigo, um esquema de estimativa de canal para um receptor RAKE com amostragem fracionada no sistema WLAN IEEE802.11b é investigado através de uma simulação computacional e um experimento. Para estimar a resposta ao impulso do canal, é utilizada uma matriz pseudo-inversa com um limite. Os resultados numéricos indicam que o canal pode ser estimado com um limite ótimo tanto na simulação quanto no experimento.
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Yu IMAOKA, Hiroshi OBATA, Yohei SUZUKI, Yukitoshi SANADA, "Channel Estimation Scheme for a RAKE Receiver with Fractional Sampling in IEEE802.11b WLAN System" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 3, pp. 946-953, March 2009, doi: 10.1587/transcom.E92.B.946.
Abstract: The IEEE802.11b WLAN standard employs direct-sequence/spread-spectrum (DS/SS) modulation. With a fractional sampling RAKE receiver, it is possible to achieve diversity and reduce the BER in DS/SS communication. In order to realize the diversity through fractional sampling, the impulse response of the channel must be estimated. In this paper, a channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system is investigated through a computer simulation and an experiment. In order to estimate the impulse response of the channel, a pseudo-inverse matrix with a threshold is employed. Numerical results indicate that the channel can be estimated with an optimum threshold in both the simulation and the experiment.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.946/_p
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@ARTICLE{e92-b_3_946,
author={Yu IMAOKA, Hiroshi OBATA, Yohei SUZUKI, Yukitoshi SANADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Channel Estimation Scheme for a RAKE Receiver with Fractional Sampling in IEEE802.11b WLAN System},
year={2009},
volume={E92-B},
number={3},
pages={946-953},
abstract={The IEEE802.11b WLAN standard employs direct-sequence/spread-spectrum (DS/SS) modulation. With a fractional sampling RAKE receiver, it is possible to achieve diversity and reduce the BER in DS/SS communication. In order to realize the diversity through fractional sampling, the impulse response of the channel must be estimated. In this paper, a channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system is investigated through a computer simulation and an experiment. In order to estimate the impulse response of the channel, a pseudo-inverse matrix with a threshold is employed. Numerical results indicate that the channel can be estimated with an optimum threshold in both the simulation and the experiment.},
keywords={},
doi={10.1587/transcom.E92.B.946},
ISSN={1745-1345},
month={March},}
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TY - JOUR
TI - Channel Estimation Scheme for a RAKE Receiver with Fractional Sampling in IEEE802.11b WLAN System
T2 - IEICE TRANSACTIONS on Communications
SP - 946
EP - 953
AU - Yu IMAOKA
AU - Hiroshi OBATA
AU - Yohei SUZUKI
AU - Yukitoshi SANADA
PY - 2009
DO - 10.1587/transcom.E92.B.946
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2009
AB - The IEEE802.11b WLAN standard employs direct-sequence/spread-spectrum (DS/SS) modulation. With a fractional sampling RAKE receiver, it is possible to achieve diversity and reduce the BER in DS/SS communication. In order to realize the diversity through fractional sampling, the impulse response of the channel must be estimated. In this paper, a channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system is investigated through a computer simulation and an experiment. In order to estimate the impulse response of the channel, a pseudo-inverse matrix with a threshold is employed. Numerical results indicate that the channel can be estimated with an optimum threshold in both the simulation and the experiment.
ER -