CDMA mobile systems with tailor made power control to each mobile station

Research output: Journal Publications and ReviewsRGC 22 - Publication in policy or professional journal

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Original languageEnglish
Pages (from-to)46-50
Journal / PublicationIEE Conference Publication
Issue number471
Publication statusPublished - 2000


Title1st International Conference on '3G Mobile Communication Technologies'
CityLondon, UK
Period27 - 29 March 2000


Power control is an important issue to the capacity of DS-CDMA cellular systems to tackle the near-far problem, co-channel interference and varying signal strength in fading channels. In this paper, we propose an adaptive Signal-Interference-Ratio (SIR) feedback power control technique so that the SIR threshold control level of each mobile station will be individually adjusted with respect to its own radio link condition. Fuzzy logic control is applied to the power control and the SIR threshold level in this paper. This new technique results in lower outage probability and thus enhances traffic capacity, especially in poor co-channel interference conditions.