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This paper proposes an acknowledgement assistant inner loop power control (AILPC), which still obeys power control command from receiver with regard of power adjustment direction, but adopts a flexible adjustment step based on extra information from ACK feedback. Positive ACK feedback happening earlier reflects better signal strength at receiver, so when transmitter is instructed to decrease power, a larger adjustment step can be adopted. To evaluate AILPC’s performance, link-level simulation platform emulating CDMA2000 1X Rev.E downlink is established. AILPC is compared with conventional power control algorithm in terms of discrepancy between instantaneous power and target power.
This paper proposes an acknowledgement inner power control (AILPC), which still obeys power control command from receiver with regard of power adjustment direction, but a flexible adjustment step based on extra information from ACK feedback. Positive ACK feedback happening preferentially better signal strength at receiver, so when transmitter is instructed to decrease power, a larger adjustment step can be adopted. AILPC is performance, link-level simulation platform emulating CDMA2000 1X Rev. E downlink is established. AILPC is compared with conventional power control algorithm in terms of discrepancy between instantaneous power and target power.