標題: The enhanced soft handoff algorithm for multirate DS-CDMA cellular systems
作者: Chao, CC
Ching, YL
Chung, JC
電信工程研究所
Institute of Communications Engineering
公開日期: 2003
摘要: In this paper, an enhanced soft handoff algorithm is proposed to improve system capacity for multi-rate DS-CDMA cellular systems. In the algorithm, we first propose a load-based power allocation scheme for serving soft handoff users in the forward link; we next develop two kinds of active set determination mechanism: a quality-based active set control (QBASC) scheme and fuzzy active set control (FASC) scheme, to re-select active set members so as to not only save system resource but also maintain required signal quality. Simulation results show that the proposed enhanced soft handoff algorithms can successfully achieve load balancing between cells. Compared to the conventional soft handoff algorithm, QBASC and FASC schemes can enhance 71.43% and 85.71% system capacity in the multirate DS-CDMA cellular system with hot-spot, respectively.
URI: http://hdl.handle.net/11536/28226
ISBN: 3-540-00732-6
ISSN: 0302-9743
期刊: MOBILE COMMUNICATIONS
Volume: 2524
起始頁: 254
結束頁: 264
顯示於類別:會議論文