Polish Naval Academy, Faculty of Navigation and Naval Weapons,
69 Śmidowicza Street, Gdynia, 81-127, Poland
ABSTRACT: A novel fast-and-smoother power control algorithm is suggested for wireless data transfer systems. It uses an adaptive multistep technique for equalizing the uplink quality of service. The technique is based on ratios of distances to the base station, and on the path loss exponent correctors if the farthest transmitters are occasionally assigned excessive powers. The constraint is a maximum-tolerated grand total of the powers transmitted in the uplink off all the transmitters. If the sum of the current uplink powers is not greater than that constraint, the powers are not corrected. Otherwise, they are corrected to fit in the active transmitter power interval by trying to equalize the powers received by the base station. If theoretic powers of the closest transmitters are too low, they are raised to the minimally possible transmitter power output. If theoretic powers of the farthest transmitters are too high, they are reduced to the maximally possible transmitter power output. The represented algorithm routine is fast enough to keep the UMTS update frequency (1500 Hz).
KEYWORDS: Wireless data transfer, Power control, Quality of service, Interference, Uplink, UMTS.
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CITE THIS PAPER AS:
Vadim ROMANUKE, Fast-and-Smoother Uplink Power Control Algorithm Based on Distance Ratios for Wireless Data Transfer Systems, Studies in Informatics and Control, ISSN 1220-1766, vol. 28(2), pp. 147-156, 2019. https://doi.org/10.24846/v28i2y201903