System performance enhancement in CDMA mobile system with uplink adaptive power control based on fuzzy logic

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

1 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Pages (from-to)25-36
Journal / PublicationWireless Personal Communications
Issue number1
Publication statusPublished - Oct 2001


An uplink adaptive signal-to-interference (SIR) based power control mechanism for a code division multiple access (CDMA) mobile system using a fuzzy logic technique was analyzed. The system performance in the fuzzy proportion-plus-integral (PI) algorithm was improved at the cost of more bandwidth and capacity on the downlink. The fuzzy logic technique was only used as a decision tool to assist the system to make inferences and to obtain relative precise cmds to manage the system operation. The proposed uplink fuzzy PI power control algorithm enabled better system performance in terms of outage probability, response time and stability than the power control algorithms, and was easy to implement.

Research Area(s)

  • CDMA, Fuzzy logic, Outage probability, Power control, Signal-to-interference ratio