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The performance of multiuser multiple input multiple output (MIMO) downlink communication system is degraded under the assumption of rapid movement of user terminals with a certain speed. Though several methods have been proposed to improve this situation, they consume extra-degrees of freedom for the extension of the zero forcing (ZF) area and/or heavy computational load for the frequent update of...
This paper provides performance analysis of multiuser multiple input multiple output (MIMO) downlink system based on zero forcing (ZF) assuming communication with moving targets. Under different conditions of antenna number, Doppler frequency, and channel estimation interval, performance of several simple methods which attempt to extend the ZF area based on channel prediction using linear extrapolation...
In cellular systems, BSs (base stations) are ideally desired to be located in the center of cells, but it is sometimes impossible because of the physical and/or social restrictions on the BS setting space. This paper considers the influence of the displacement of the BS location on BS cooperation (BSC) scheme in MIMO (multiple input multiple output) cellular system. For this aim, BS locations are...
Conventional MIMO (multiple input multiple output) multiuser systems consider communications between one base station (BS) and multiple user terminals (UTs) both in downlink and uplink scenarios.This paper deals with the case in which multiple BSs transmit different data sequence to different target UTs which becomes a MTMR (multiple transmitter multiple receiver) problem, and describes a maximum...
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