Ιδρυματικό Αποθετήριο [SANDBOX]
Πολυτεχνείο Κρήτης
EN  |  EL

Αναζήτηση

Πλοήγηση

Ο Χώρος μου

Adaptive assignment of binary user spreading codes in DS-CDMA systems

Karystinos Georgios, Pados Dimitrios

Απλή Εγγραφή

URIhttp://purl.tuc.gr/dl/dias/AF82C6B2-786A-414F-AC52-07B7F085F267-
Αναγνωριστικόhttps://doi.org/10.1117/12.438280-
Γλώσσαen-
ΤίτλοςAdaptive assignment of binary user spreading codes in DS-CDMA systemsen
ΔημιουργόςKarystinos Georgiosen
ΔημιουργόςΚαρυστινος Γεωργιοςel
ΔημιουργόςPados Dimitriosen
Περίληψηn direct-sequence code-division-multiple-access (DS-CDMA) systems, the pre-detection signal-to-interference-plus-noise ratio (SINR) at the output of the single-user minimum-mean-square-error (MMSE) filter is a function of the specific user spreading code (signature). In this paper, we consider the adaptive optimization of the user signature assignment such that the output SINR of the MMSE filter is maximized under a transmitter power constraint. In the context of binary signatures, the complexity of the signature optimization procedure is exponential in the processing gain. A low-cost suboptimum adaptive binary signature assignment algorithm is derived based on conditional optimization principles. We use this algorithm to design an efficient system-wide multiuser adaptive signature set assignment scheme. The performance of the proposed scheme is evaluated under asynchronous multipath fading DS-CDMA channel models and is compared to the performance of systems with arbitrarily chosen signature sets.en
ΤύποςΠλήρης Δημοσίευση σε Συνέδριοel
ΤύποςConference Full Paperen
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by-nc-nd/4.0/en
Ημερομηνία2015-11-10-
Ημερομηνία Δημοσίευσης2001-
Βιβλιογραφική Αναφορά G. N. Karystinos and D. A. Pados, “Adaptive assignment of binary user spreading codes in DS-CDMA systems,” in Proc. SPIE’s 15th Annual International Symposium, Digital Wireless Communication Conference, 2001, pp. 137-144en

Υπηρεσίες

Στατιστικά

 

Copyright © DIAS 2013