標題: | Outage-based fuzzy call admission controller with multiuser detection for WCDMA systems |
作者: | Chen, YH Chang, CJ Shen, S 電信工程研究所 Institute of Communications Engineering |
公開日期: | 1-十月-2005 |
摘要: | An outage-based fuzzy call admission controller with multiuser detection (OFCAC-MUD) is proposed for wideband code division multiple access (WCDMA) systems. The OFCAC-MUD determines the new call admission based on the uplink signal-to-interference ratios from home and adjacent cells and system outage probabilities. The OFCAC-MUD possesses both the effective reasoning capability of a fuzzy logic system and the aggressive processing ability of MUD. Simulation results reveal that OFCAC-MUD without power control (PC) improves the system capacity by 70.5% as compared to an SIR-based CAC-RAKE with perfect PC. It also enhances the system capacity by 53.9% as compared to an OFCAC-RAKE with perfect PC, by 6.7% as compared to an SIR-based CAC-MUD without PC and by 12.9% as compared to an OFCAC-MUD with perfect PC, given the same outage probability requirements. Moreover, OFCAC-MUD can prevent the violation of outage probability requirements in the hotspot environment, which is hardly achieved by SIR-based CAC. |
URI: | http://dx.doi.org/10.1049/ip-com:20045063 http://hdl.handle.net/11536/13224 |
ISSN: | 1350-2425 |
DOI: | 10.1049/ip-com:20045063 |
期刊: | IEE PROCEEDINGS-COMMUNICATIONS |
Volume: | 152 |
Issue: | 5 |
起始頁: | 617 |
結束頁: | 623 |
顯示於類別: | 期刊論文 |