期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2012
卷号：3
期号：2
页码：3683-3688
出版社：TechScience Publications
摘要：In multi user environment number of users share the same radio resources. A consequence of the limited availability of radio channels in the network is that the same channel has to be assigned to many users. Thus a signal intended for a certain user will reach other users and introduce interference to their connection, and degrade the quality. This makes the Power Control functionality a vital issue. Power control needs to reduce inter-cell interference level at the same time achieve a required SINR level. The LTE power control mechanism constitutes of a closed loop component operating around an open loop point of operation. The open loop component compensates path loss and shadowing through fractional power control enabling a trade-off between cell edge throughput and mean cell throughput. The closed loop component allows further improvement in the performance of the system by compensating fast variations in channel. This paper presents the performance analysis of LTE power control schemes. Simulation results indicate that fractional power control is advantageous compared to the conventional open loop power control in terms of mean cell throughput
关键词：LTE; Uplink; Power Control; Fractional Power;Control.s
