An Advanced Power Control Algorithm Based on PHR in LTE-A PUSCH

Considering the uplink power control scheme worked effectively in compensating the path loss of intra-cell users, mitigating inter-cell interference and improving the cell coverage and system throughput in LTE-A system. An optimization physical uplink shared channel (PUSCH) closed loop power control algorithm based on power headroom report (PHR) is proposed in this paper for the existing ones with the unreasonable processing of PHR and target SINR. In the developed algorithm, the base station firstly calculates the power of each RB after each PH value is received, and then this power has to be filtered and processed to get the closed loop power adjustment. Meanwhile, the update range of target SINR is set. The simulation results show that, compared to the existing power control program based on PHR, the improved one can adjust the transmit power value better and gain the higher data throughput of cell-edge user.