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
Cet article étudie la méthode optimale de génération du poids de l'antenne d'émission pour la diversité d'émission du réseau d'antennes adaptatives (AAA-TD) dans la liaison aller W-CDMA : AAA-TD avec direction de faisceau et direction nulle (BNST), AAA-TD avec direction de faisceau ( BST), ou diversité de transmission à faisceau commuté avec poids fixes (SBTD-FW). Les performances BER réalisables après étalonnage de la fréquence porteuse dans le diagramme de faisceau d'émission sont comparées entre les trois méthodes en supposant une fréquence porteuse différente dans une bande de 2 GHz avec une séparation des porteuses de 184.5 MHz sur la base de simulations informatiques. Les résultats de la simulation montrent que les performances BER réalisables dans la liaison aller en utilisant AAA-TD avec BNST sont presque identiques à celles utilisant AAA-TD avec BST lorsqu'il y a beaucoup plus d'utilisateurs brouilleurs que d'antennes réseau, sauf dans le cas particulier où un il existe un petit nombre d'utilisateurs à taux plus élevé dans le lien inverse. En effet, en effectuant un étalonnage de la fréquence porteuse, les directions des points nuls du faisceau sont décalées par rapport aux directions d'arrivée réelles (DOA) des utilisateurs interférents. Cependant, nous montrons également que la transmission requise Eb/N0 au BER moyen de 10-3 l'utilisation de AAA-TD avec BST est diminuée d'environ 1.0 à 1.2 dB par rapport à celle utilisant SBTD-FW avec 12 faisceaux.
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Shinya TANAKA, Taisuke IHARA, Mamoru SAWAHASHI, "Optimum Weight Generation Method for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link" in IEICE TRANSACTIONS on Fundamentals,
vol. E84-A, no. 12, pp. 3035-3044, December 2001, doi: .
Abstract: This paper investigates the optimum transmit-antenna-weight generation method for adaptive antenna array transmit diversity (AAA-TD) in the W-CDMA forward link: AAA-TD with beam and null steering (BNST), AAA-TD with beam steering (BST), or switched beam transmit diversity with fixed weights (SBTD-FW). The achievable BER performance after carrier frequency calibration in the transmit beam pattern is compared among the three methods assuming a different carrier frequency in a 2-GHz band with the carrier separation of 184.5 MHz based on computer simulations. The simulation results show that the achievable BER performance in the forward link using AAA-TD with BNST is almost identical to that using AAA-TD with BST when there are many more interfering users than there are array antennas, except for the special case when a small number of higher rate users exists in the reverse link. This is because by performing carrier frequency calibration, the directions of the beam nulls are shifted from the real directions of arrival (DOAs) of the interfering users. However, we also show that the required transmit Eb/N0 at the average BER of 10-3 using AAA-TD with BST is decreased by approximately 1.0 to 1.2 dB compared to that using SBTD-FW with 12 beams.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_12_3035/_p
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@ARTICLE{e84-a_12_3035,
author={Shinya TANAKA, Taisuke IHARA, Mamoru SAWAHASHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Optimum Weight Generation Method for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link},
year={2001},
volume={E84-A},
number={12},
pages={3035-3044},
abstract={This paper investigates the optimum transmit-antenna-weight generation method for adaptive antenna array transmit diversity (AAA-TD) in the W-CDMA forward link: AAA-TD with beam and null steering (BNST), AAA-TD with beam steering (BST), or switched beam transmit diversity with fixed weights (SBTD-FW). The achievable BER performance after carrier frequency calibration in the transmit beam pattern is compared among the three methods assuming a different carrier frequency in a 2-GHz band with the carrier separation of 184.5 MHz based on computer simulations. The simulation results show that the achievable BER performance in the forward link using AAA-TD with BNST is almost identical to that using AAA-TD with BST when there are many more interfering users than there are array antennas, except for the special case when a small number of higher rate users exists in the reverse link. This is because by performing carrier frequency calibration, the directions of the beam nulls are shifted from the real directions of arrival (DOAs) of the interfering users. However, we also show that the required transmit Eb/N0 at the average BER of 10-3 using AAA-TD with BST is decreased by approximately 1.0 to 1.2 dB compared to that using SBTD-FW with 12 beams.},
keywords={},
doi={},
ISSN={},
month={December},}
Copier
TY - JOUR
TI - Optimum Weight Generation Method for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3035
EP - 3044
AU - Shinya TANAKA
AU - Taisuke IHARA
AU - Mamoru SAWAHASHI
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2001
AB - This paper investigates the optimum transmit-antenna-weight generation method for adaptive antenna array transmit diversity (AAA-TD) in the W-CDMA forward link: AAA-TD with beam and null steering (BNST), AAA-TD with beam steering (BST), or switched beam transmit diversity with fixed weights (SBTD-FW). The achievable BER performance after carrier frequency calibration in the transmit beam pattern is compared among the three methods assuming a different carrier frequency in a 2-GHz band with the carrier separation of 184.5 MHz based on computer simulations. The simulation results show that the achievable BER performance in the forward link using AAA-TD with BNST is almost identical to that using AAA-TD with BST when there are many more interfering users than there are array antennas, except for the special case when a small number of higher rate users exists in the reverse link. This is because by performing carrier frequency calibration, the directions of the beam nulls are shifted from the real directions of arrival (DOAs) of the interfering users. However, we also show that the required transmit Eb/N0 at the average BER of 10-3 using AAA-TD with BST is decreased by approximately 1.0 to 1.2 dB compared to that using SBTD-FW with 12 beams.
ER -