Title :
Uplink closed loop power control for LTE system
Author :
Muhammad, Bilal ; Mohammed, Abbas
Author_Institution :
COMSATS Inst. of IT, Pakistan
Abstract :
The role of uplink power control is to suppress interference. Power control refers to set output power levels of transmitters, base stations in the downlink and User Equipment (UE) in the uplink. In this paper the performance of 3GPP Long Term Evolution (LTE) closed loop power control combined with fractional path loss compensation factor is evaluated by simulating the effects of open loop error, Transmit Power Control (TPC) command delay and power headroom reporting. Simulation results show that the closed loop power control with fractional path loss compensation factor is advantageous compared to closed loop power control with full path loss compensation. The closed loop power control with fractional path loss compensation factor is found to improve the system performance in terms of mean bit rate by 63%.
Keywords :
3G mobile communication; closed loop systems; interference suppression; power control; telecommunication control; 3GPP long term evolution; LTE system; base stations; fractional path loss compensation factor; full path loss compensation; interference suppression; open loop error; power headroom reporting; transmit power control command delay; uplink closed loop power control; user equipment; Bit rate; Data models; Delay; Interference; Mobile communication; Power control; Signal to noise ratio; LTE; TPC; power control; power headroom report;
Conference_Titel :
Emerging Technologies (ICET), 2010 6th International Conference on
Conference_Location :
Islamabad
Print_ISBN :
978-1-4244-8057-9
DOI :
10.1109/ICET.2010.5638376
