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
La modulation d'indice (IM) retient l'attention en raison de sa haute efficacité énergétique. Dans la modulation d'indice de précodage (PIM), certains bits de données sont utilisés pour la modulation des symboles et le reste est utilisé pour la sélection des coefficients de précodage. Dans le PIM conventionnel, les matrices de précodage sont orthogonales et unitaires. Dans le PIM proposé, le nombre de colonnes de la matrice de précodage est plus étendu que celui des lignes. Grâce aux matrices de précodage étendues, le nombre de bits de données utilisés pour la sélection des coefficients de précodage est augmenté. En conséquence, un débit de code peut être réduit par rapport à celui du PIM classique et le nombre de points de constellation candidats pour la démodulation peut être diminué par rapport à celui d'un système MIMO à entrées multiples et sorties multiples avec le même débit. Les résultats numériques obtenus par simulation informatique montrent que le PIM proposé avec les symboles QPSK améliore les performances d'environ 2.5 dB avec un taux d'erreur binaire de 10.-3 par rapport au MIMO surchargé avec des symboles 16QAM pour deux antennes d'émission et une antenne de réception. Il atteint également des performances environ 3.5 dB supérieures à celles du PIM conventionnel dans les mêmes conditions d'antenne. De plus, le nombre optimal de bits de modulation d'index est trouvé par la simulation pour le PIM proposé. De plus, le schéma PIM réduit la complexité de la démodulation d'un facteur 32 par rapport à celle du MIMO sous des paramètres de modulation spécifiques.
Yasunori NIN
Keio University
Yukitoshi SANADA
Keio University
Ryota KIMURA
Sony Corporation
Hiroki MATSUDA
Sony Corporation
Ryo SAWAI
Sony Corporation
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Yasunori NIN, Yukitoshi SANADA, Ryota KIMURA, Hiroki MATSUDA, Ryo SAWAI, "Expanded Precoding Index Modulation for MIMO System" in IEICE TRANSACTIONS on Communications,
vol. E102-B, no. 4, pp. 921-929, April 2019, doi: 10.1587/transcom.2018EBP3105.
Abstract: Index modulation (IM) is receiving attention because of its high energy efficiency. In precoding index modulation (PIM), some of the data bits are used for the modulation of symbols and the rest are used for the selection of precoding coefficients. In conventional PIM, the precoding matrices are orthogonal and unitary. In the proposed PIM, the number of the columns of the precoding matrix is expanded more than that of the rows. Because of the expanded precoding matrices, the number of data bits used for the selection of precoding coefficients is increased. As a result, a code rate can be reduced compared to that of the conventional PIM and the number of candidate constellation points for demodulation can be decreased as compared to that of a multiple-input multiple-output MIMO system under the same throughput. Numerical results obtained through computer simulation show that the proposed PIM with QPSK symbols improves the performance by about 2.5dB at a bit error rate of 10-3 as compared to overloaded MIMO with 16QAM symbols for two transmit antennas and one receive antenna. It also achieves about 3.5dB better performance than the conventional PIM under the same antenna condition. Furthermore, the optimum number of index modulation bits is found by the simulation for the proposed PIM. In addition, the PIM scheme reduces demodulation complexity by a factor of 32 as compared to that of the MIMO under specific modulation parameters.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018EBP3105/_p
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@ARTICLE{e102-b_4_921,
author={Yasunori NIN, Yukitoshi SANADA, Ryota KIMURA, Hiroki MATSUDA, Ryo SAWAI, },
journal={IEICE TRANSACTIONS on Communications},
title={Expanded Precoding Index Modulation for MIMO System},
year={2019},
volume={E102-B},
number={4},
pages={921-929},
abstract={Index modulation (IM) is receiving attention because of its high energy efficiency. In precoding index modulation (PIM), some of the data bits are used for the modulation of symbols and the rest are used for the selection of precoding coefficients. In conventional PIM, the precoding matrices are orthogonal and unitary. In the proposed PIM, the number of the columns of the precoding matrix is expanded more than that of the rows. Because of the expanded precoding matrices, the number of data bits used for the selection of precoding coefficients is increased. As a result, a code rate can be reduced compared to that of the conventional PIM and the number of candidate constellation points for demodulation can be decreased as compared to that of a multiple-input multiple-output MIMO system under the same throughput. Numerical results obtained through computer simulation show that the proposed PIM with QPSK symbols improves the performance by about 2.5dB at a bit error rate of 10-3 as compared to overloaded MIMO with 16QAM symbols for two transmit antennas and one receive antenna. It also achieves about 3.5dB better performance than the conventional PIM under the same antenna condition. Furthermore, the optimum number of index modulation bits is found by the simulation for the proposed PIM. In addition, the PIM scheme reduces demodulation complexity by a factor of 32 as compared to that of the MIMO under specific modulation parameters.},
keywords={},
doi={10.1587/transcom.2018EBP3105},
ISSN={1745-1345},
month={April},}
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TY - JOUR
TI - Expanded Precoding Index Modulation for MIMO System
T2 - IEICE TRANSACTIONS on Communications
SP - 921
EP - 929
AU - Yasunori NIN
AU - Yukitoshi SANADA
AU - Ryota KIMURA
AU - Hiroki MATSUDA
AU - Ryo SAWAI
PY - 2019
DO - 10.1587/transcom.2018EBP3105
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2019
AB - Index modulation (IM) is receiving attention because of its high energy efficiency. In precoding index modulation (PIM), some of the data bits are used for the modulation of symbols and the rest are used for the selection of precoding coefficients. In conventional PIM, the precoding matrices are orthogonal and unitary. In the proposed PIM, the number of the columns of the precoding matrix is expanded more than that of the rows. Because of the expanded precoding matrices, the number of data bits used for the selection of precoding coefficients is increased. As a result, a code rate can be reduced compared to that of the conventional PIM and the number of candidate constellation points for demodulation can be decreased as compared to that of a multiple-input multiple-output MIMO system under the same throughput. Numerical results obtained through computer simulation show that the proposed PIM with QPSK symbols improves the performance by about 2.5dB at a bit error rate of 10-3 as compared to overloaded MIMO with 16QAM symbols for two transmit antennas and one receive antenna. It also achieves about 3.5dB better performance than the conventional PIM under the same antenna condition. Furthermore, the optimum number of index modulation bits is found by the simulation for the proposed PIM. In addition, the PIM scheme reduces demodulation complexity by a factor of 32 as compared to that of the MIMO under specific modulation parameters.
ER -