Tag Archive: '2015 ns3 projects'

Jamming Detection of Smartphones for WiFi Signals

In this paper, we investigate the impact of jamming attacks on the performance of smartphones regarding their WiFi access and propose a real-time jamming detection method based on the received signal strength indicator and the packet loss rate of WiFi signals, which can be easily implemented on Android smartphones. Experiments are performed to evaluate the […]

Body Electric: Wireless Power Transfer for Implant Applications

The electrical properties of biological cells, tissues, and organs studied in electrophysiology not only provide information about the normal/abnormal activities of human bodies but also provide a means to directly restore, repair, replace, or recreate physiological functions in humans to improve quality of life. For example, cardiac pacemakers, implanted in millions of patients, deliver electrical […]

Fiber-wireless technology for small cell backhauling

In this paper, we review some work we have carried out in the area of fiber-based small cell backhauling in particular focussing on the energy efficient transport schemes and network planning. Our study shows that for densely packed small cells in an urban scenario, analog transport of thewireless signals over the optical link is most energy […]

Optimal and Suboptimal Full-Duplex Secure Beamforming Designs for MISO Two-Way Communications

In this letter, we investigate full-duplex (FD) secure beamforming design problem for multiple-input-single-output two-way communication systems. Our objective is to maximize sum secrecy rate under sum transmit power constraint. We propose a globally optimal solution which solves the optimization problem by two-dimensional (2-D) search. In each iteration of 2-D search, a semidefinite programming is solved. To reduce […]

Channel Interface: A Primitive Model for Memory Efficient Communication

Though the size of the system is getting larger towards exa-scale computation, the amount of available memory on computing nodes is expected to remain the same or to decrease. Therefore, memory efficiency is becoming an important issue for achieving scalability. This paper pointed out the problem of memory-inefficiency in the de-facto standard parallel programming model, Message Passing Interface (MPI). To solve […]

Dynamic Infinite Mixed-Membership Stochastic Blockmodel

Directional and pairwise measurements are often used to model interactions in a social network setting. The mixed-membership stochastic blockmodel (MMSB) was a seminal work in this area, and its ability has been extended. However, models such as MMSB face particular challenges in modeling dynamicnetworks, for example, with the unknown number of communities. Accordingly, this paper proposes adynamic infinite mixed-membership stochastic blockmodel, […]

High availability of databases for cloud

In current cyber age, almost all the services are being provided to users over the cloud. Many of these services need to be highly available. Since these services require databases, the databases themselves must be made highly available. Redundancy is the technique of doing this. For this purpose Remus and its adaptation RemusDB use complete virtual machine migration to a backup […]

A Reliable System for JXTA-Overlay P2P Platform Considering Number of Authentic Files, Security and QoS Parameters

The reliability of peers is very important for safe communication in Peer-to-Peer (P2P) systems. The reliability of a peer can be evaluated based on the reputation and interactions with other peers toprovide different services. However, in order to decide the peer reliability there are needed many parameters, which make the problem NP-hard. In this paper, we propose and evaluate a new fuzzy-based reliability system for P2P communications […]

Designing a Mobile Social Tool that Moderates Drinking

Binge drinking is an important global health issue that results in a range of health and social harms. Mobile technology’s portability and connectivity can be used in-situ to encourage the practice of monitoring and moderating alcohol use. Social networking services, if used among peer-supportnetworks to promote responsible drinking, could be effective in moderating alcohol consumption. In this article, the authors describe the […]

Optimal Balanced Coordinated Network Resource Allocation Using Swarm Optimization

In this paper, we present a new control-theoretic framework to efficiently design balanced coordinated resource allocation algorithms in a network based on semistabilization theory for discrete-time stochastic linear systems together with compartmental modeling. Specifically, necessary and sufficient conditions for equivalent, control-theoretic characterizations of the proposed balanced coordinated resource allocation design problem are derived, which are based on a new […]