Study of Various Power Control Mechanisms in WCDMA
Keywords:
Power Control, DPC, ASPC, Novel ASPC, SIR, WCDMA, MVSPCAbstract
In this paper an iterative technique for sequential mobile power in WCDMA networks are presented. The obtain algorithm are DPC (Distributed power control), adaptive step size power control, modified variable step size power control, novel adaptive step power control algorithm in WCDMA. All the algorithms based on the induction of the transmitted power. Power control Mechanism is an important issue for wide band code division multiple access (WCDMA) systems which help in achieving higher capacity and provides high link performance. Power control allow to minimize the transmitter power while keeping the system performance above the require value. Modified adaptive step size power control mechanism show the increase in convergence speed and stability by properly choosing the parameters. The novel adaptive step size power control based on the function of the difference between the target and estimated SIR of the MS to obtain more stability of the system. All the power control mechanisms evaluated the outage probability in percentage. For these power algorithms. Power control steps depend on the instantaneous mobile command and command history.
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