Cloud environment on wireless networks is a combination of cloud and mobile technologies. The goal is to support mobile applications more efficient way to utilize bandwidth, energy consumption, hardware utilization, and cost. Cloud is a virtualization concept (borrowed from the virtual machine environment introduced in 1970’s) in wireless communications to utilize the resources efficiently and provide the…
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Battery Aware Video Delivery Techniques Using Rate Adaptation and Base Station Reconfiguration
With mobile video increasingly becoming an important driver of mobile device usage, the battery consumption of mobile devices will be dominated by video delivery and playback . In this paper, we develop battery efficient video download techniques that vary video download rate dynamically, including stopping video download at times, depending on mobile device buffer levels…
SAVE: Energy-aware Virtual Data Center embedding and Traffic Engineering using SDN
Cloud computing is a popular computing paradigm which provides the virtual resource as a form of VM to customers in an on demand manner. Existing provisioning solutions were only limited to provision computing resource (e.g., CPU, RAM and etc.), therefore, it was difficult to provide more advanced cloud services. Virtual Data Center (VDC) embedding, which…
Minimizing resource protection in IP over WDM networks: Multi-layer shared backup router [invited]
Optical networks and Internet Protocol/Multi-Protocol Label Switching (IP/MPLS) based networks have been traditionally designed and operated by separate departments of network operators. Likewise, both layers have always represented different business areas for system providers, which maintain different product lines for each of them. However, network operators have an IP/ MPLS over WDM architecture. The main drivers for this unique transport network are the cost savings…
Study and analysis of adaptive multitaper method in diverse fading channels for cognitive radio
The primary task of Cognitive Radio (CR) technology is to sense the underutilized radio spectrum and to allocate it to the secondary users dynamically without any harmful interferences to primary users of the licensed band either in frequency domain or in time domain. Multitaper Method is one of the most efficient nonparametric spectral assessment techniques which provide an accurate, effectual…
Mobile access of the DVB-T channel and the opportunity for cognitive spectrum utilization
The main goal of the Cognitive Radio (CR) systems is the intelligent and efficient utilization of the radiospectrum. In this paper we introduce our survey in wideband spectrum measurement for studying the Terrestrial Digital Video Broadcasting (DVB-T) frequency bands that are one of the future candidates for cognitive radio applications. The actuality of this subject is that during 2013 Hungary changed the…
Duplex mode selection and channel allocation for full-duplex cognitive femtocell networks
In this paper, we investigate the problem of incorporating full-duplex (FD) transmission in cognitivefemtocell networks (CFN) to achieve higher spectrum utilization. We aim to maximize the sum rate of a full-duplex cognitive femtocell network (FDCFN) as well as guaranteeing the quality of service (QoS) of users in the form of a required signal to interference…
Interference and X Networks With Noisy Cooperation and Feedback
The Gaussian K-user interference and M × K X channels are investigated with no instantaneous channel state information at transmitters (CSIT). First, it is assumed that the CSI is fed back to all nodes after a finite delay (delayed CSIT), and furthermore, the transmitters operate in full-duplex mode, i.e, they can transmit and receive simultaneously.…
Hierarchical Decentralized Network Reconfiguration for Smart Distribution Systems—Part II: Applications to Test Systems
A hierarchical decentralized network reconfiguration approach to minimize power losses for smart distribution systems was presented in Part I. In this paper, the proposed approach is applied to four test distribution systems to examine its performance. A demonstration system consisting of the test system and distributed intelligent agents is built using MATLAB/Simulink to illustrate how…
Transmission network expansion planning considering uncertainties in loads and renewable energy resources
This paper proposes a novel method for transmission network expansion planning (TNEP) that take into account uncertainties in loads and renewable energy resources. The goal of TNEP is to minimize the expansion cost of candidate lines without any load curtailment. A robust linear optimization algorithm is adopted to minimize the load curtailment with uncertainties considered…