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
Skim penghantaran radio pemultipleks pembahagian frekuensi ortogonal termodulat adaptif (OFDM) yang membolehkan penghantaran data yang cekap dalam persekitaran pudar berbilang laluan baru dicadangkan. Skim ini boleh digunakan dalam sistem capaian mudah alih multimedia piawai seperti ETSI-BRAN, dan ARIB-MMAC. Ia adalah berdasarkan anggaran sebaran kelewatan dan nisbah ketumpatan kuasa pembawa kepada hingar (C/N0). Anggaran dilakukan menggunakan simbol anggaran saluran yang dimasukkan ke dalam bingkai skema transmisi radio OFDM standard. Simulasi komputer menunjukkan bahawa kaedah penganggaran menghasilkan BER purata yang hampir dengan yang apabila ciri perambatan dianggarkan dengan sempurna. Tambahan pula, apabila skim penghantaran OFDM adaptif adalah berdasarkan BPSK, QPSK atau 16 QAM, purata BER hampir hampir dengan yang apabila BPSK-OFDM hanya digunakan, dan purata kadar penghantaran adalah 1.8 kali lebih tinggi. Menggunakan kod pembetulan ralat berdasarkan kod konvolusi menghasilkan BER purata lebih rendah daripada itu dengan skim BPSK- dan QPSK-OFDM.
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Salinan
Hiroshi HARADA, Takako YAMAMURA, Yukiyoshi KAMIO, Masayuki FUJISE, "Adaptive Modulated OFDM Radio Transmission Scheme Using a New Channel Estimation Method for Future Broadband Mobile Communication Systems" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 12, pp. 2785-2796, December 2002, doi: .
Abstract: An adaptive modulated orthogonal frequency division multiplexing (OFDM) radio transmission scheme that enables efficient data transmission in multipath fading environments is newly proposed. This scheme can be used in standardized multimedia mobile access systems such as ETSI-BRAN, and ARIB-MMAC. It is based on estimating the delay spread and the carrier-to-noise power density ratio (C/N0). The estimation is done using channel estimation symbols that are inserted into the frames of the standard OFDM radio transmission scheme. Computer simulations show that the estimation method results in an average BER close to those when propagation characteristics are perfectly estimated. Furthermore, when the adaptive OFDM transmission scheme is based on BPSK, QPSK or 16 QAM, the average BER is almost close to that when BPSK-OFDM is only used, and the average transmission rate is 1.8 times as high. Using an error-correction code based on convolutional code results in an average BER lower than that with the BPSK- and QPSK-OFDM schemes.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_12_2785/_p
Salinan
@ARTICLE{e85-b_12_2785,
author={Hiroshi HARADA, Takako YAMAMURA, Yukiyoshi KAMIO, Masayuki FUJISE, },
journal={IEICE TRANSACTIONS on Communications},
title={Adaptive Modulated OFDM Radio Transmission Scheme Using a New Channel Estimation Method for Future Broadband Mobile Communication Systems},
year={2002},
volume={E85-B},
number={12},
pages={2785-2796},
abstract={An adaptive modulated orthogonal frequency division multiplexing (OFDM) radio transmission scheme that enables efficient data transmission in multipath fading environments is newly proposed. This scheme can be used in standardized multimedia mobile access systems such as ETSI-BRAN, and ARIB-MMAC. It is based on estimating the delay spread and the carrier-to-noise power density ratio (C/N0). The estimation is done using channel estimation symbols that are inserted into the frames of the standard OFDM radio transmission scheme. Computer simulations show that the estimation method results in an average BER close to those when propagation characteristics are perfectly estimated. Furthermore, when the adaptive OFDM transmission scheme is based on BPSK, QPSK or 16 QAM, the average BER is almost close to that when BPSK-OFDM is only used, and the average transmission rate is 1.8 times as high. Using an error-correction code based on convolutional code results in an average BER lower than that with the BPSK- and QPSK-OFDM schemes.},
keywords={},
doi={},
ISSN={},
month={December},}
Salinan
TY - JOUR
TI - Adaptive Modulated OFDM Radio Transmission Scheme Using a New Channel Estimation Method for Future Broadband Mobile Communication Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 2785
EP - 2796
AU - Hiroshi HARADA
AU - Takako YAMAMURA
AU - Yukiyoshi KAMIO
AU - Masayuki FUJISE
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2002
AB - An adaptive modulated orthogonal frequency division multiplexing (OFDM) radio transmission scheme that enables efficient data transmission in multipath fading environments is newly proposed. This scheme can be used in standardized multimedia mobile access systems such as ETSI-BRAN, and ARIB-MMAC. It is based on estimating the delay spread and the carrier-to-noise power density ratio (C/N0). The estimation is done using channel estimation symbols that are inserted into the frames of the standard OFDM radio transmission scheme. Computer simulations show that the estimation method results in an average BER close to those when propagation characteristics are perfectly estimated. Furthermore, when the adaptive OFDM transmission scheme is based on BPSK, QPSK or 16 QAM, the average BER is almost close to that when BPSK-OFDM is only used, and the average transmission rate is 1.8 times as high. Using an error-correction code based on convolutional code results in an average BER lower than that with the BPSK- and QPSK-OFDM schemes.
ER -