A new code allocation scheme for UMTS system

Author

Al-Meshhadany, Thamer ; Al Agha, Khaldoun

Author_Institution

Lab. de Recherche en Inf., Univ. de Paris-Sud, Orsay, France

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

930

Abstract

Third generation wireless system is based on the CDMA access technique. In this technique, all users share the same bandwidth simultaneously but with different codes. This sharing generates interference that can reduce the system´s capacity when using a weak code allocation algorithm. We analyze the WCDMA capacity as a function of the type and the number of allocated codes. We also study the method used to assign codes to the users. Finally we propose a new scheme that assigns the code allocation according to the type of user application. Simulation model and results are also provided

Keywords

broadband networks; broadcast channels; cellular radio; channel coding; code division multiple access; codes; interference suppression; multiuser channels; radiofrequency interference; spread spectrum communication; 3G wireless system; FDD-WCDMA; OSSC code allocation; UMTS standard; UMTS system; WCDMA capacity; bandwidth sharing; broadcast channel; cellular radio; channelization code; code allocation algorithm; interference; one service one scrambling code; orthogonal variable spreading factor; simulation model; simulation results; system capacity reduction; third generation wireless system; 3G mobile communication; Bandwidth; Delay; Gold; Interference; Multiaccess communication; Multiplexing; Power system modeling; Quality of service; Resource management;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.956909

Filename

956909