Title :
The effect of wireless radio channel on WCDMA system with paralel interference cancellation
Author :
Kose, Ugur ; Ozen, Adil Emre ; Kurnaz, Cetin
Author_Institution :
Elektrik-Elektron. Muhendisligi Bolumu, Ondokuz Mayis Univ., Samsun, Turkey
Abstract :
In CDMA based systems with the use of multi-user detection (MUD) methods the effects of multiple access interference (MAI) can be decreased and system performance can be increased. One of these methods which is parallel interference cancellation (PIC) is based on instantly estimating all users´ information and removing MAI signal from active user signal. In this study, the effects of radio channel profiles and number of users on wideband CDMA (WCDMA) with parallel interference cancellation (PIC) are investigated. In the assessments, 2, 4, 8, 15 numbers of users, 3-finger rake receiver structure, and four different channel profiles measured in Manchester city center are used. It is observed from the results that the performance of PIC is changed dramatically depending upon channel´s profile and number of users.
Keywords :
code division multiple access; interference suppression; multiuser detection; radiofrequency interference; wireless channels; 3-finger rake receiver structure; CDMA-based systems; MAI; MAI signal removal; MUD method; Manchester city center; PIC; WCDMA system; active user signal; multiple-access interference; multiuser detection method; parallel interference cancellation; radio channel profile effect; user information estimation; wideband CDMA; wireless radio channel effect; Conferences; Fading; Interference cancellation; Multiaccess communication; Multipath channels; Multiuser detection; Spread spectrum communication; WCDMA; matched filter; multi user detection; multiple access interference; parallel interference cancellation;
Conference_Titel :
Signal Processing and Communications Applications Conference (SIU), 2015 23th
Conference_Location :
Malatya
DOI :
10.1109/SIU.2015.7130149
