Title :
Interference reduction in CDMA systems
Author_Institution :
Comput. & Commun. Res. Lab., Wufeng Inst. of Technol., Taiwan, China
Abstract :
To cancel single cell interference with multiuser detector (MUD) effectively, we have to reduce adjacent cell interference (ACI) first. To reduce ACI, we define new codes with interference reduction window (IRW) and assign even codes to one cell and odd codes to the neighboring cells. We apply perturbation and equalization methods for MUD, and investigate the effects of IRW and delay spread on bit error rate (BER) in band limited fading channels.
Keywords :
adjacent channel interference; bandlimited communication; code division multiple access; codes; error statistics; fading channels; interference suppression; multiuser detection; telecommunication channels; ACI; BER; CDMA system; adjacent cell interference reduction; band limited fading channel; bit error rate; code division multiple access; delay; equalization method; even code; interference reduction window; multiuser detector; odd code; perturbation method; single cell interference cancellation; Band pass filters; Bit error rate; Delay effects; Fading; Filtering; Interference cancellation; Intersymbol interference; Low pass filters; Multiaccess communication; Multiuser detection;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Print_ISBN :
0-7803-7822-9
DOI :
10.1109/PIMRC.2003.1259294
