Title :
Pilot channel aided adaptable interference cancellation scheme for uplink DS/CDMA mobile radio systems
Author :
Tang, Chih-Hsuan ; Chang, Wei-yen ; Wei, Che-Ho
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
6/23/1905 12:00:00 AM
Abstract :
In this paper, we propose a pilot channel aided adaptable interference cancellation (IC) scheme which combines serial (SIC) and parallel (PIC) interference cancellation to adapt to different services under different circumstances for uplink wideband DS/CDMA systems. The processing delay and computational complexity can be adjusted based on system loading and required performance. The interference between data channel signals and pilot channel signals under multipath fading are also taken into consideration. This results in better quality both on channel parameter estimation and user data detection. Compared with SIC and PIC, the proposed scheme shows better performance with reasonable hardware while it needs shorter processing delay than SIC
Keywords :
code division multiple access; fading channels; interference suppression; mobile radio; multipath channels; parameter estimation; spread spectrum communication; telecommunication traffic; DS/CDMA; adaptable interference cancellation; channel parameter estimation; computational complexity; data channel signals; multipath fading channel; parallel interference cancellation; performance; pilot channel aided interference cancellation; pilot channel signals; processing delay; serial interference cancellation; system loading; third generation mobile communication; uplink wideband system; user data detection; Interference cancellation; Land mobile radio; Multiaccess communication;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.966010
