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- W2066372151 abstract "This paper considers a number of techniques that have been proposed for spatial filtering purposes in code division multiple access (CDMA) antenna array receivers. There are two main types of algorithms: (i) matched filter methods that maximise the signal power at the filter output and (ii) interference suppression algorithms that maximise the signal-to-interference plus noise ratio (SINR) of the filter output. Theoretical and simulation results are presented to compare the convergence performance, in terms of the attained SINR, for the algorithms in a CDMA cellular system. A method of trading convergence performance with complexity for algorithms using the maximum SINR approach is also discussed. Dieser Artikel behandelt eine Reihe von Techniken, die zur räumlichen Filterung in code division multiple access (CDMA) Empfängern mit Antennengruppen vorgeschlagen wurden. Es gibt zwei Ilaupttypen von Algorithmen: (i) matched filter Methoden, die die Signalleistung am Filterausgang maximieren und (ii) Störunterdrückungs-Algorithmen, die das Signal- zu Stör- plus Rauschverhältnis (signal-to-interference plus noise ratio, SINR) am Ausgang maximieren. Es werden theoretische Resultate und Simulationsergebnisse vorgestellt, um die Konvergenz im Hinblick auf das erzielte SINR zu vergleichen, wobei die Algorithmen in einem CDMA Zellensystem arbeiten. Außerdem wird eine Methode diskutiert, die es beim Maximum-SINR Ansatz erlaubt, einen Kompromiß zwischen Konvergenz und der Komplexität der Algorithmen zu erzielen. Cet article traite de certaines techniques d’identification de canal en vue d’une réception multicapteurs CDMA. Il y a deux grandes catégories d’algorithmes: (i) ceux qui produisent une solution de type filtre adapté spatial et (ii) ceux qui maximisent le rapport signal sur bruit plus interférences (SINR) du récepteur. Des résultats théoriques et de simulations sont présentés afin de comparer les performances de convergence en terme de SINR pour ces algorithmes dans un système cellulaire de type CDMA. Dans les simulations, les interférences dues aux accès multiples se comportent de manière similaire au bruit blanc spatial. De ce fait les techniques issues du filtrage adapté convergent plus rapidement que les méthodes de type suppression d’interférence." @default.
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- W2066372151 date "1998-07-01" @default.
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- W2066372151 title "Performance of antenna array receiver algorithms for CDMA" @default.
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