Institutional Repository [SANDBOX]
Technical University of Crete
EN  |  EL

Search

Browse

My Space

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

Karystinos Georgios, Pados Dimitrios

Simple record

URIhttp://purl.tuc.gr/dl/dias/AF82C6B2-786A-414F-AC52-07B7F085F267-
Identifierhttps://doi.org/10.1117/12.438280-
Languageen-
TitleAdaptive assignment of binary user spreading codes in DS-CDMA systemsen
CreatorKarystinos Georgiosen
CreatorΚαρυστινος Γεωργιοςel
CreatorPados Dimitriosen
Content Summaryn 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
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/en
Date of Item2015-11-10-
Date of Publication2001-
Bibliographic Citation 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

Services

Statistics

 

Copyright © DIAS 2013