A brief introduction of principles and algorithm realization of uplink power control in CDMA mobile communication system based on IS 95 are given, and then the blocking probability and Erlang capacity under the condi...A brief introduction of principles and algorithm realization of uplink power control in CDMA mobile communication system based on IS 95 are given, and then the blocking probability and Erlang capacity under the condition of perfect and imperfect uplink power control are presented and analyzed. Finally the uplink power control algorithms are simulated, and the optimum uplink power control algorithm that maximizes system Erlang capacity is acquired.展开更多
在码分多址(CD M A)系统中,在不影响通话质量的前提下,要使得系统容量最大化需要采用功率控制技术。功率控制的主要方法是通过降低每个移动台和基站的发射功率使得系统中干扰最小化。在建立模型的基础上,文章分别对单小区和多小区CD M ...在码分多址(CD M A)系统中,在不影响通话质量的前提下,要使得系统容量最大化需要采用功率控制技术。功率控制的主要方法是通过降低每个移动台和基站的发射功率使得系统中干扰最小化。在建立模型的基础上,文章分别对单小区和多小区CD M A系统的系统容量进行了理论推导,并采用19个小区的仿真模型对系统容量进行了仿真。在将仿真得出的结果与理论推导值比较后,得出结论功率控制的偏差直接导致系统容量的下降,因此研究出更好的功率控制算法对于提高系统容量至关重要。展开更多
This paper analyzes the CDMA cellular system in which the practical power control processwith errors is modeled as random log-normally distributed variable at the reverse link. The Performance of the CDMA system is me...This paper analyzes the CDMA cellular system in which the practical power control processwith errors is modeled as random log-normally distributed variable at the reverse link. The Performance of the CDMA system is measured in terms of outage probability,and the computing results arepresented in this paper.This work is useful for CDMA system designation and provides the criteria forevaluating CDMA System capacity in a more practical way.展开更多
文摘A brief introduction of principles and algorithm realization of uplink power control in CDMA mobile communication system based on IS 95 are given, and then the blocking probability and Erlang capacity under the condition of perfect and imperfect uplink power control are presented and analyzed. Finally the uplink power control algorithms are simulated, and the optimum uplink power control algorithm that maximizes system Erlang capacity is acquired.
文摘在码分多址(CD M A)系统中,在不影响通话质量的前提下,要使得系统容量最大化需要采用功率控制技术。功率控制的主要方法是通过降低每个移动台和基站的发射功率使得系统中干扰最小化。在建立模型的基础上,文章分别对单小区和多小区CD M A系统的系统容量进行了理论推导,并采用19个小区的仿真模型对系统容量进行了仿真。在将仿真得出的结果与理论推导值比较后,得出结论功率控制的偏差直接导致系统容量的下降,因此研究出更好的功率控制算法对于提高系统容量至关重要。
文摘This paper analyzes the CDMA cellular system in which the practical power control processwith errors is modeled as random log-normally distributed variable at the reverse link. The Performance of the CDMA system is measured in terms of outage probability,and the computing results arepresented in this paper.This work is useful for CDMA system designation and provides the criteria forevaluating CDMA System capacity in a more practical way.
