Virtual radio access networks (RANs) is the candidate solution for 5G access networks, the concept of virtualised radio resources completing the virtual RAN paradigm. This paper proposes a new analytical model for the management of virtual radio resources in full heterogeneous networks. The estimation of network capacity and data rate allocation are the model’s two main components. Based on the...

The area capacity scaling of Wi-Fi has been thought to be poor due to the 802.11 MAC enforcing single transmissions in overlapped cell coverage areas. This is based on the assumption that the energy detection and virtual carrier sense MAC mechanisms at every station correctly detect ongoing transmissions and thus prevent new transmissions. However overlapped or faded packet headers can cause st...

In this paper, an enhanced soft handoff algorithm is proposed to improve system capacity for multi-rate DS-CDMA cellular systems. In the algorithm, we first propose a load-based power allocation scheme for serving soft handoff users in the forward link; we next develop two kinds of active set determination mechanism: a quality-based active set control (QBASC) scheme and fuzzy active set control...

The capacity of MIMO systems under ideal (i.i.d.) channel conditions has been shown to increase linearly with the number of antennas. Capacity scaling is observed in a correlated channel environment as well but the constant of scaling is shown in [7] to be less than that of the i.i.d. scaling factor. Using a channel representation motivated by physical scattering considerations, the virtual cha...

this paper develops an analytical method to calculate seismic bearing capacity of a strip footing, which is located on a slope reinforced with rows of pile. the resistance of passive pile is determined based on normal and shear stress of the soil around the pile, which is then compared to other analytical methods. this comparison indicates an acceptable agreement. the variants of the study incl...

In this paper, we present an admission control technique for mixed real-time and nonreal-time tra c in nite length queues with PBS cell loss control. Real-time connections have both delay and loss constraints while non-real-time connections are only subject to cell loss constraints. We propose to provide each type of tra c with a separate capacity subregion with di erent QoS bounds. We introduc...

this research examines the behavior of soil-reinforced piles and applied loads based on the analytical method and by using the numerical results of flac3d software for comparison with the analytical results. the analysis was based on a method called virtual retaining wall, the following into consideration: an imaginary retaining wall that passes the footing edge the bearing capacity of footing ...

Network throughput can be increased by dividing the buffer storage associated with each network channel into several virtual channels [DalSei]. Each physical channel is associated with several small queues, virtual channels, rather than a single deep queue. The virtual channels associated with one physical channel are allocated independently but compete with each other for physical bandwidth. V...

The Hyperloop is a concept of ground transportation system consisting capsules traveling at very high-speeds in near-vacuum tubes. aims to be fast, cheap, and sustainable alternative short-haul flights high-speed rail. small pod size requires high frequencies respond future levels passenger cargo demands. Media representatives the emerging industry acclaim as capacity effective transport system...