Skip Navigation

IEICE Transactions on Communications 2008 E91-B(2):466-478; doi:10.1093/ietcom/e91-b.2.466
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Request Permissions
Google Scholar
Right arrow Articles by CHIARALUCE, F.
Right arrow Articles by RIGHI, G.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Papers -- Wireless Communication Technologies

A General Model for Performance Evaluation in DS-CDMA Systems with Variable Spreading Factors

Franco CHIARALUCE1, Ennio GAMBI1 and Giorgia RIGHI1

1 The authors are with the Dipartimento di Elettronica, Intelligenza artificiale e Telecomunicazioni (DEIT), Università Politecnica delle Marche, Ancona, Italy. E-mail: f.chiaraluce{at}univpm.it; e.gambi{at}univpm.it; g.righi{at}univpm.it


  Abstract

This paper extends previous analytical approaches for the study of CDMA systems to the relevant case of multipath environments where users can operate at different bit rates. This scenario is of interest for the Wideband CDMA strategy employed in UMTS, and the model permits the performance comparison of classic and more innovative spreading signals. The method is based on the characteristic function approach, that allows to model accurately the various kinds of interferences. Some numerical examples are given with reference to the ITU-R M.1225 Recommendations, but the analysis could be extended to different channel descriptions.

Key Words: direct sequence-spread spectrum, wideband code division multiple access, spreading sequences, multipath, BER performance

Manuscript received January 17, 2007. Manuscript revised July 27, 2007.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.