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
Apresentamos uma abordagem atraente para transmissão OFDM usando um equalizador pré-FFT adaptativo, que pode selecionar o modo de redução ICI de acordo com a condição do canal, e um estimador de canal baseado em matriz inversa degenerada (DIME), que usa uma matriz de função sinc cíclica determinado exclusivamente por subportadoras transmitidas. Além dos resultados da simulação, o sistema proposto com um equalizador pré-FFT adaptativo e DIME foi testado em laboratório usando uma bancada de testes baseada em rádio definido por software (SDR). A simulação e os resultados experimentais demonstraram que o sistema a uma taxa superior a 100 Mbps pode fornecer uma taxa de erro de bit inferior a 10-3 para um canal de desvanecimento rápido de múltiplos caminhos que tem uma velocidade de movimento superior a 200 km/h com um spread de atraso de 1.9 µs (um caminho de atraso máximo de 7.3 µs) na banda de 5 GHz.
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Makoto YOSHIDA, "Adaptive Pre-FFT Equalizer with High-Precision Channel Estimator for ISI Channels" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 11, pp. 2669-2678, November 2009, doi: 10.1587/transfun.E92.A.2669.
Abstract: We present an attractive approach for OFDM transmission using an adaptive pre-FFT equalizer, which can select ICI reduction mode according to channel condition, and a degenerated-inverse-matrix-based channel estimator (DIME), which uses a cyclic sinc-function matrix uniquely determined by transmitted subcarriers. In addition to simulation results, the proposed system with an adaptive pre-FFT equalizer and DIME has been laboratory tested by using a software defined radio (SDR)-based test bed. The simulation and experimental results demonstrated that the system at a rate of more than 100 Mbps can provide a bit error rate of less than 10-3 for a fast multi-path fading channel that has a moving velocity of more than 200 km/h with a delay spread of 1.9 µs (a maximum delay path of 7.3 µs) in the 5-GHz band.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2669/_p
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@ARTICLE{e92-a_11_2669,
author={Makoto YOSHIDA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Adaptive Pre-FFT Equalizer with High-Precision Channel Estimator for ISI Channels},
year={2009},
volume={E92-A},
number={11},
pages={2669-2678},
abstract={We present an attractive approach for OFDM transmission using an adaptive pre-FFT equalizer, which can select ICI reduction mode according to channel condition, and a degenerated-inverse-matrix-based channel estimator (DIME), which uses a cyclic sinc-function matrix uniquely determined by transmitted subcarriers. In addition to simulation results, the proposed system with an adaptive pre-FFT equalizer and DIME has been laboratory tested by using a software defined radio (SDR)-based test bed. The simulation and experimental results demonstrated that the system at a rate of more than 100 Mbps can provide a bit error rate of less than 10-3 for a fast multi-path fading channel that has a moving velocity of more than 200 km/h with a delay spread of 1.9 µs (a maximum delay path of 7.3 µs) in the 5-GHz band.},
keywords={},
doi={10.1587/transfun.E92.A.2669},
ISSN={1745-1337},
month={November},}
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TY - JOUR
TI - Adaptive Pre-FFT Equalizer with High-Precision Channel Estimator for ISI Channels
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2669
EP - 2678
AU - Makoto YOSHIDA
PY - 2009
DO - 10.1587/transfun.E92.A.2669
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2009
AB - We present an attractive approach for OFDM transmission using an adaptive pre-FFT equalizer, which can select ICI reduction mode according to channel condition, and a degenerated-inverse-matrix-based channel estimator (DIME), which uses a cyclic sinc-function matrix uniquely determined by transmitted subcarriers. In addition to simulation results, the proposed system with an adaptive pre-FFT equalizer and DIME has been laboratory tested by using a software defined radio (SDR)-based test bed. The simulation and experimental results demonstrated that the system at a rate of more than 100 Mbps can provide a bit error rate of less than 10-3 for a fast multi-path fading channel that has a moving velocity of more than 200 km/h with a delay spread of 1.9 µs (a maximum delay path of 7.3 µs) in the 5-GHz band.
ER -