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With the rapid growth of bandwidth-intensive applications, Carrier Aggregation (CA) has been introduced in Long Term Evolution-Advanced (LTE-A) Networks to provide higher data rates. In this paper, we investigate the joint resource block allocation and link adaptation problem with CA in LTE-A dwonlink. The problem is formulated as an Integer Programming problem aimed at maximizing the cell throughtput...
Location privacy preservation has become an important issue in providing location based services (LBSs). When the mobile users report their locations to the LBS server or the third-party servers, they risk the leak of their location information if such servers are compromised. To address this issue, we propose a Location Privacy Preservation Scheme (LPPS) based on distributed cache pushing which is...
This paper mainly addresses the orientation-singularity analysis and the nonsingular orientation-workspace computation of the Stewart-Gough Platform. Employing a unit quaternion to represent the orientation of the moving platform, an analytical symbolic expression that represents the orientation-singularity locus of the manipulator at a fixed position is derived. It is shown that for the Stewart-Gough...
Interactive wireless applications, like VoIP over wireless networks, desire high-quality links and smooth connectivity during user movement. In order to support seamless roaming in wireless networks, handoff optimization has attracted a lot of attention recently. Most existing approaches aim at reducing handoff latency in communication protocols. While these methods provide significant savings in...
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