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Performance analysis of soft handoff in CDMA cellular networks

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2 Author(s)
Narrainen, R.P. ; Sch. of Electr. & Electron. Eng., Natal Univ., Durban, South Africa ; Takawira, F.

A unique feature of code division multiple access (CDMA) systems is the use of soft handoff between cells. Soft handoff, in general, increases the system capacity because while the link between a mobile and one base station is poor, it might be better between the same mobile and some other base station. Hence, the user may transmit at a lower power in a soft handoff situation. Teletraffic analysis of soft handoff is complex because one cannot separate transmission issues from traffic issues. Many papers in the literature have independently analyzed the effect of soft capacity and soft handoff on network performance. Some papers have analyzed the effect of soft handoff on soft capacity but there has been no proper teletraffic analysis that includes both soft capacity and soft handoff. This paper proposes a traffic model for a DS-CDMA cellular network that includes both soft capacity and soft handoff. Network performance is then computed in terms of call blocking

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Vehicular Technology, IEEE Transactions on  (Volume:50 ,  Issue: 6 )