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
Kertas kerja ini mencadangkan dan menyiasat penugasan modulasi optimum dan skema peruntukan jalur mengikut status saluran subband untuk sistem BST-OFDM. Sistem yang dicadangkan secara adaptif boleh mengoptimumkan tugasan modulasi dan peruntukan jalur mengikut parameter bersyarat di bawah saluran subband yang pudar secara bebas. Secara khusus, dalam makalah ini hanya dua masalah pengoptimuman yang ditangani dari segi penugasan modulasi. Pada mulanya, kriteria pengoptimuman ialah jumlah Kadar Ralat Bit (BER) tertakluk kepada syarat kekangan jumlah kadar bit maklumat yang dikehendaki di bawah lebar jalur berkesan tetap. Satu lagi masalah pengoptimuman ialah memaksimumkan jumlah kadar bit maklumat untuk memenuhi BER yang dikehendaki di bawah lebar jalur berkesan tetap. Pengetahuan tentang status saluran subband diandaikan dikemas kini oleh maklumat maklum balas daripada penerima. Kertas kerja ini menunjukkan bahawa sistem yang dicadangkan boleh mengatasi sistem konvensional di mana semua subband menggunakan skim modulasi yang sama dari segi BER. Di samping itu, ditunjukkan bahawa sistem yang dicadangkan meningkatkan kadar bit maklumat keseluruhan, yang tidak boleh dicapai dalam sistem konvensional.
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Salinan
Masayuki MOTEGI, Ryuji KOHNO, "Optimum Modulation Assignment According to Subband Channel Status for BST-OFDM" in IEICE TRANSACTIONS on Fundamentals,
vol. E84-A, no. 7, pp. 1714-1722, July 2001, doi: .
Abstract: This paper proposes and investigates optimum modulation assignment and band allocation scheme according to subband channel status for BST-OFDM system. The proposed system can adaptively optimize modulation assignment and band allocation according to the conditional parameter under independently fading subband channels. Specifically, in this paper only two optimization problems are treated in terms of modulation assignment. At first, an optimization criterion is a total Bit Error Rate (BER) subject to the constraint conditions of a desired total information bit rate under a fixed effective bandwidth. Another optimization problem is the maximization of a total information bit rate to satisfy a desired BER under a fixed effective bandwidth. Knowledge of the subband channel status is assumed to be updated by the feedback information from a receiver. This paper shows that the proposed system can overperform the conventional system in which all subbands employ the same modulation schemes in terms of BER. In addition, it is shown that the proposed system improves the overall information bit rate, which is not accomplishable in the conventional system.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_7_1714/_p
Salinan
@ARTICLE{e84-a_7_1714,
author={Masayuki MOTEGI, Ryuji KOHNO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Optimum Modulation Assignment According to Subband Channel Status for BST-OFDM},
year={2001},
volume={E84-A},
number={7},
pages={1714-1722},
abstract={This paper proposes and investigates optimum modulation assignment and band allocation scheme according to subband channel status for BST-OFDM system. The proposed system can adaptively optimize modulation assignment and band allocation according to the conditional parameter under independently fading subband channels. Specifically, in this paper only two optimization problems are treated in terms of modulation assignment. At first, an optimization criterion is a total Bit Error Rate (BER) subject to the constraint conditions of a desired total information bit rate under a fixed effective bandwidth. Another optimization problem is the maximization of a total information bit rate to satisfy a desired BER under a fixed effective bandwidth. Knowledge of the subband channel status is assumed to be updated by the feedback information from a receiver. This paper shows that the proposed system can overperform the conventional system in which all subbands employ the same modulation schemes in terms of BER. In addition, it is shown that the proposed system improves the overall information bit rate, which is not accomplishable in the conventional system.},
keywords={},
doi={},
ISSN={},
month={July},}
Salinan
TY - JOUR
TI - Optimum Modulation Assignment According to Subband Channel Status for BST-OFDM
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1714
EP - 1722
AU - Masayuki MOTEGI
AU - Ryuji KOHNO
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2001
AB - This paper proposes and investigates optimum modulation assignment and band allocation scheme according to subband channel status for BST-OFDM system. The proposed system can adaptively optimize modulation assignment and band allocation according to the conditional parameter under independently fading subband channels. Specifically, in this paper only two optimization problems are treated in terms of modulation assignment. At first, an optimization criterion is a total Bit Error Rate (BER) subject to the constraint conditions of a desired total information bit rate under a fixed effective bandwidth. Another optimization problem is the maximization of a total information bit rate to satisfy a desired BER under a fixed effective bandwidth. Knowledge of the subband channel status is assumed to be updated by the feedback information from a receiver. This paper shows that the proposed system can overperform the conventional system in which all subbands employ the same modulation schemes in terms of BER. In addition, it is shown that the proposed system improves the overall information bit rate, which is not accomplishable in the conventional system.
ER -