Performance study of close-loop power control algorithms for a cellular CDMA system

作     者：Sim, ML Gunawan, E Soong, BH Soh, CB 

作者机构：Univ Telekom Multimedia Univ Fac Engn Melaka 75450 Malaysia Nanyang Technol Univ Sch Elect & Elect Engn Singapore 2263 Singapore 

出 版 物：《IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY》 (IEEE Trans. Veh. Technol.)

年 卷 期：1999年第48卷第3期

页      面：911-921页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 0823[工学-交通运输工程] 

主　　题：CDMA systems cellular communications power control algorithm 

摘      要：Performance of a reverse link code-division multiple-access (CDMA) system with fast close-loop power control algorithms is studied. It is found that if fast close-loop power control algorithm functions effectively, the speed of the mobile unit is in the range such that its Doppler frequency is less than one tenth of the power control updating rate. This paper also proposes a new predictive power control algorithm with better performance in terms of system capacity than the conventional and adaptive step size algorithms. An increase in system capacity as high as 22% compared with the conventional algorithm can be achieved depending on the mobile velocity.