Title :
Improved single-user detector for WCDMA systems based on Griffiths´ algorithm
Author :
Karlsson, Jonas ; Imai, Hideki
Author_Institution :
Inst. of Ind. Sci., Tokyo Univ., Japan
Abstract :
An introduction to CDMA cellular systems is given. The usage of mobile Internet and other mobile data communication will require increased capacity of cellular systems. One group of methods to achieve this is the interference cancellation (IC) receivers. Some of the available interference cancellation algorithms are presented. Among them, the Griffiths´ algorithm used to adapt the despreader filter is chosen for a more detailed study. A number of problems related to the WCDMA standard and the fading radio channel are identified and a new receiver structure is proposed to solve these problems. The convergence properties and the bit error rate of this receiver are studied assuming perfectly known radio channels
Keywords :
broadband networks; cellular radio; channel capacity; code division multiple access; convergence of numerical methods; error statistics; fading channels; interference suppression; multiuser channels; radio networks; radio receivers; radiofrequency interference; signal detection; spread spectrum communication; CDMA cellular systems; Griffiths´ algorithm; WCDMA standard; WCDMA systems; bit error rate; convergence properties; despreader filter; fading radio channel; interference cancellation algorithms; interference cancellation receivers; mobile Internet; mobile data communication; multi-user detector; receiver structure; single-user detector; system capacity; Convergence; Data communication; Detectors; Fading; Information filtering; Information filters; Interference cancellation; Internet; Multiaccess communication; Receivers;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.883288
