Title :
Interference cancellation in multi-cell CDMA systems
Author_Institution :
Comput. & Commun. Res. Lab., Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
Multiple access and intersymbol interference of CDMA systems within a cell make single user detection error prone. The perturbation method of multiuser detection (MUD) can correct this. In addition to the single cell interference there is adjacent cell interference (ACI), which can be reduced by a set of new codes with interference reduction window (IRW) and exclusive even/odd code assignment to adjacent cells. Simulation shows that the MUD receiver significantly outperforms RAKE receivers. The new methods simplify the CDMA systems and improve their performance.
Keywords :
adjacent channel interference; cellular radio; channel allocation; channel coding; code division multiple access; interference suppression; intersymbol interference; multiuser detection; perturbation techniques; radio receivers; ACI; MUD receiver; adjacent cell interference; even/odd code assignment; interference cancellation; interference reduction window; intersymbol interference; multi-cell CDMA systems; multiuser detection; performance; perturbation method; simulation; single cell interference; Computer errors; Delay effects; Fading; Frequency synchronization; Interference cancellation; Multiaccess communication; Multipath channels; Multiple access interference; Multiuser detection; Perturbation methods;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on
Print_ISBN :
0-7803-7589-0
DOI :
10.1109/PIMRC.2002.1046496
