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
En DS-CDMA (y compris W-CDMA), un signal reçu peut être résolu en plusieurs chemins pour être combinés par Rake. Un problème de conception important du récepteur Rake est de savoir comment rechercher avec précision les chemins avec un rapport de puissance signal/interférence plus bruit de fond (SIR) suffisamment élevé. Cet article étudie les performances d'un récepteur Rake cohérent utilisant une estimation de canal assistée par symbole pilote avec un contrôle rapide de la puissance d'émission, et optimise ainsi trois paramètres clés : la période totale de moyenne, Tavg, consistant en une combinaison de sommation cohérente et de sommation de puissance ; chaque période des sommations pour mesurer le profil de retard de puissance moyen ; et seuil de sélection de chemin M à partir du profil de retard de puissance généré. Nous avons utilisé un algorithme de recherche de chemin, qui recherche les chemins qui ont M puissance de signal moyenne fois supérieure à la puissance d'interférence et de bruit de fond mesurée dans le profil de retard de puissance moyen généré à l'aide de symboles pilotes multiplexés dans le temps. Il a été clarifié par des simulations et des expériences en laboratoire que lorsque M = 4, Tavg = 50-100 msec, et le nombre de slots pour une accumulation cohérente R = 2, la moyenne de transmission requise Eb/N0 pour obtenir la moyenne BER sur 10-3 est presque minimisé avec et sans diversité d'antenne pour les véhicules ITU-R-B et la puissance moyenne égale L-modèle de profil de retard de trajet, dans lequel chaque trajet subit un évanouissement de Rayleigh indépendant. L'article montre également que, sur la base des expériences sur le terrain, l'algorithme de recherche de chemin avec des paramètres de sélection de chemin optimisés est robuste aux changements dynamiques réels dans la forme du profil de retard de puissance.
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Satoru FUKUMOTO, Koichi OKAWA, Kenichi HIGUCHI, Mamoru SAWAHASHI, Fumiyuki ADACHI, "Path Search Performance and Its Parameter Optimization of Pilot Symbol-Assisted Coherent Rake Receiver for W-CDMA Mobile Radio" in IEICE TRANSACTIONS on Fundamentals,
vol. E83-A, no. 11, pp. 2110-2119, November 2000, doi: .
Abstract: In DS-CDMA (including W-CDMA), a received signal can be resolved into multiple paths to be Rake combined. An important design problem of the Rake receiver is how to accurately search the paths with a sufficiently large signal-to-interference plus background noise power ratio (SIR). This paper investigates the performance of a coherent Rake receiver using pilot symbol-assisted channel estimation with fast transmit power control, and thereby optimizes three key parameters: the total averaging period, Tavg, consisting of a combination of coherent summation and power summation; each period of the summations for measuring the average power delay profile; and path-selection threshold M from the generated power delay profile. We used a path search algorithm, which searches the paths that have M times greater average signal power than the interference plus background noise power measured in the average power delay profile generated using time-multiplexed pilot symbols. It was clarified by both simulation and laboratory experiments that when M = 4, Tavg = 50-100 msec, and the number of slots for coherent accumulation R = 2, the required average transmit Eb/N0 for obtaining the average BER of 10-3 is almost minimized with and without antenna diversity for both ITU-R Vehicular-B and average equal power L-path delay profile model, in which each path suffered independent Rayleigh fading. The paper also shows that based on the field experiments, the path search algorithm with optimized path-selection parameters is robust against actual dynamic changes in the power delay profile shape.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e83-a_11_2110/_p
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@ARTICLE{e83-a_11_2110,
author={Satoru FUKUMOTO, Koichi OKAWA, Kenichi HIGUCHI, Mamoru SAWAHASHI, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Path Search Performance and Its Parameter Optimization of Pilot Symbol-Assisted Coherent Rake Receiver for W-CDMA Mobile Radio},
year={2000},
volume={E83-A},
number={11},
pages={2110-2119},
abstract={In DS-CDMA (including W-CDMA), a received signal can be resolved into multiple paths to be Rake combined. An important design problem of the Rake receiver is how to accurately search the paths with a sufficiently large signal-to-interference plus background noise power ratio (SIR). This paper investigates the performance of a coherent Rake receiver using pilot symbol-assisted channel estimation with fast transmit power control, and thereby optimizes three key parameters: the total averaging period, Tavg, consisting of a combination of coherent summation and power summation; each period of the summations for measuring the average power delay profile; and path-selection threshold M from the generated power delay profile. We used a path search algorithm, which searches the paths that have M times greater average signal power than the interference plus background noise power measured in the average power delay profile generated using time-multiplexed pilot symbols. It was clarified by both simulation and laboratory experiments that when M = 4, Tavg = 50-100 msec, and the number of slots for coherent accumulation R = 2, the required average transmit Eb/N0 for obtaining the average BER of 10-3 is almost minimized with and without antenna diversity for both ITU-R Vehicular-B and average equal power L-path delay profile model, in which each path suffered independent Rayleigh fading. The paper also shows that based on the field experiments, the path search algorithm with optimized path-selection parameters is robust against actual dynamic changes in the power delay profile shape.},
keywords={},
doi={},
ISSN={},
month={November},}
Copier
TY - JOUR
TI - Path Search Performance and Its Parameter Optimization of Pilot Symbol-Assisted Coherent Rake Receiver for W-CDMA Mobile Radio
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2110
EP - 2119
AU - Satoru FUKUMOTO
AU - Koichi OKAWA
AU - Kenichi HIGUCHI
AU - Mamoru SAWAHASHI
AU - Fumiyuki ADACHI
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E83-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2000
AB - In DS-CDMA (including W-CDMA), a received signal can be resolved into multiple paths to be Rake combined. An important design problem of the Rake receiver is how to accurately search the paths with a sufficiently large signal-to-interference plus background noise power ratio (SIR). This paper investigates the performance of a coherent Rake receiver using pilot symbol-assisted channel estimation with fast transmit power control, and thereby optimizes three key parameters: the total averaging period, Tavg, consisting of a combination of coherent summation and power summation; each period of the summations for measuring the average power delay profile; and path-selection threshold M from the generated power delay profile. We used a path search algorithm, which searches the paths that have M times greater average signal power than the interference plus background noise power measured in the average power delay profile generated using time-multiplexed pilot symbols. It was clarified by both simulation and laboratory experiments that when M = 4, Tavg = 50-100 msec, and the number of slots for coherent accumulation R = 2, the required average transmit Eb/N0 for obtaining the average BER of 10-3 is almost minimized with and without antenna diversity for both ITU-R Vehicular-B and average equal power L-path delay profile model, in which each path suffered independent Rayleigh fading. The paper also shows that based on the field experiments, the path search algorithm with optimized path-selection parameters is robust against actual dynamic changes in the power delay profile shape.
ER -