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System information (SI) acquisition is a mandatory component for inbound handover (HO) to closed subscriber group femtocells in LTE/LTE-Advanced networks. In this paper, we analyze theoretically and numerically several existing SI acquisition schemes such as scheduled, semi scheduled and autonomous SI acquisition scheme. We found that using those schemes can result in long measurement gaps; which...
This paper describes a novel multiuser macro-diversity system to be used within a group of base stations to increase User Equipment (UEs) that will be allocated to resource blocks (RBs) in emergency and disaster events. The goal of this study is to determine a solution that provides the best service possible during emergency events and avoids degradation of the system due to a sudden increase in mobile...
Multiple-Input Multiple-Output (MIMO) technology can increase the channel capacity and mitigate the effect of multipath fading in a wireless transmission. Orthogonal Frequency Division Multiple Access (OFDMA), however, offers high flexibility in radio resource management according to the Quality of Service (QoS) demands of different users. The combination of MIMO and OFDMA techniques, MIMO-OFDMA,...
Due to the increasing demand for higher data rates by mobile users, the deployment of femtocells under macro coverage has been adopted by 3GPP LTE-Advanced systems as one of the main proposals to enhance the network performance in the respects of coverage and capacity improvement especially for indoor users. However the random deployment of femtocells raise the issue of interference between macrocell...
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