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本文研究了码分多址（CDMA）通信系统中的功率控制问题。首先，对CDMA通信系统模型进行了分析，同时，对系统的信道模型作了一些合理的修正；其次，基于模糊控制理论建立了一个合理的自适应功率控制模型；最后，在数值仿真实验中与传统的固定步长控制进行了比较，说明了基于模糊的自适应功率控制可以使CDMA通信系统获得较佳的性能。
This paper studies the problem of power control in Code Division Multiple Access (CDMA) communication system. First of all, the model of CDMA communication system is analyzed, meanwhile some reasonable modifications are made to the channel model of the system. Secondly, a reasonable adaptive power control model is established based on fuzzy control theory. Finally, in numerical simulation experiments, The traditional fixed step control is compared, which shows that the fuzzy adaptive power control can make CDMA communication system get better performance.