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Delay and security are both highly concerned in the Internet of Things (IoT). In this paper, we set up a secure analytical framework for IoT networks to characterize the network delay performance and secrecy performance. Firstly, stochastic geometry and queueing theory are adopted to model the location of IoT devices and the temporal arrival of packets. Based on this model, a low-complexity secure...
Network emulators are powerful tools that allow to test and characterize network equipment and protocols. The market offers several measurement solutions. The most widely adopted are software network emulators and among them surely free or open-source emulators are the most used especially in research contexts. Unfortunately, software network emulators are not distributed with technical support and...
Arithmetic and Logic Unit represent the core of all microprocessors. It performs arithmetic and logical operations. ALU is getting more complex and smaller to make more efficient circuits. This paper describes simple ALU but contains the essentials functions. It is a reconfigurable ALU based on double gate carbon nanotube field effect transistors (DG-CNTFETs). The proposed ALU is designed for one...
Communications Operations Procedure-1(COP-1) is widely used for reliable transmission of telecommand data for space missions. This paper focuses on the delay performance of COP-1 protocol over long and lossy link. The typical work conditions and process are studied combined with the characters of both the link and the transmission task. Based on the analysis of the procedure, the quantificational...
WiFi networks have becoming popular in the past decade to provide network access due to its inexpensive but high-bandwidth infrastructure. With the increasingly dense WiFi deployment and the rapid proliferation of network devices and applications, the demand for more bandwidth, constrained delay performance and less power consumption is soaring; however, the traditional WiFi networks have become incapable...
It is expected that billions of devices will be connected with each other through the Internet of Things (IoT). Different aspects of IoT, such as security, have been extensively explored in the literature. However, the research focuses on how to identify and secure the IoT. We believe that it is very important to investigate how the IoT infrastructure will response when a huge amount of data is generated...
VLSI domain is now a days facing new problems while going towards the miniaturization. For solving these problems many new technologies are coming up at device level as well as interconnect level. For getting best outcome in terms of delay, power dissipation and crosstalk variations from the available technology, the compatibility of technologies with each other should be checked. This paper simulates...
In industrial automation fields, seamless connection of the capabilities of smart wireless devices to a high-bandwidth and deterministic real-time Ethernet-based industrial backbone has emerged as an important research focus. This study describes a method for integration of WirelessHART networks into the Ethernet Powerlink backbone. A Linux-based open Powerlink-WirelessHART gateway (PW-GW) solution...
Instant messenger, often shortened to IM is one type of communication service that allows person to have a conversation (chat) privately with others via the internet. Within the calls & messaging on Android and iOS operating systems, they both have an equal value in the terms of innovation and performance. In this work, we focus on evaluate the performance of the IM application on Android and...
Challenges from interconnects in the deep submicron VLSI domain are now a days addressed through the new inventions. These inventions include device as well as interconnect technology domain. Materials based on Graphene such as Carbon Nanotubes and Graphene Nanoribbons are the two capable candidates to replace the traditional Cu in deep-nanometer VLSI interconnect. Multilayer graphene nanoribbon is...
In this paper we have analyzed the effect of gate length variation on the DC parameters of Ino.7Gao.3As/InAs/Ino.7Gao.3As composite channel HEMT using 2D Sentaurus TCAD simulation. Hydrodynamic model is used for the simulation. The simulation model is calibrated with the previously published experimentally. Extensive device simulation of major device performance metrics such as drain induced barrier...
This article describes the performance evaluation of a new wireless TCP algorithm in real environments, in order to identify the advantages and disadvantages of its operation. We evaluate the proposed wireless TCP algorithm with respect to generic TCP, considering an intrusive technique by using traffic injection. These tests were performed over point-to-point WiFi and WiMAX links in out-door and...
In this paper, early stage congestion control method at the router buffer is proposed. The proposed method, namely, Gentle BLUE (GB), extends the well-known BLUE method by providing a dynamic mechanism for calculating the dropping probability based on the status of the queue length. This dynamic-based overcomes the slow-to-congestion response shortage in the existing methods and provides better management...
Process variations have a large impact on device and circuit reliability and performance. Few studies are focused on their impact on more complex systems, as for example their influence in a data path. In our study, the impact of variations in the memory cell block is the largest measured, as it is usually designed with the minimum device dimensions. Moreover, we observe a significant influence of...
A multi-frame Neighbor Discovery Protocol over a DTN network with RFID Devices is proposed. This protocol is based on a Sift-distribution (s-Persistent) in order to differentiate the access probability to slots among RFID devices. Moreover, our approach has been considered in a mono-frame and multi-frame scenario. Our s-Persistent approach is applied in a simulated test and in a real test-bed in order...
This paper describes the design and implementation of user defined fused floating-point arithmetic operations that can be used to implement Radix 2 Fast Fourier Transform (FFT) for complex numbers used in Digital Signal Processing (DSP-C) processors. The design is implemented and simulated by targeting Xilinx vertex 5 FPGA device. This paper describes the optimization of fused floating point modules...
In this paper, we present a comparative analysis of Double gate MOSFET (DG MOS) with the conventional bulk Si single gate MOSFET (SG MOS) by using Cadence Virtuoso simulation tool. In our observations leakage current (Ioff), delay are found to be reduced than those of the bulk Si single gate MOSFET, and the Double gate MOSFET gets same drive current based on VGS as compared to single gate MOSFET and...
Decentralized control of bilateral teleoperation systems with time delays is considered within the H2 optimization framework. We demonstrate that the problem is quadratically invariant and can be split into two independent model matching optimizations with partial multiplicative delay. The recent loop shifting techniques for delayed systems control are used then to find a complete analytical solution...
We present, for the first time, mechanically-flexible advanced-node CMOS circuits, including SRAM and ring oscillators, with gate lengths <30 nm and contacted gate pitch of 100 nm. Our novel layer transfer technique called “controlled spalling” is employed as an incredibly simple, low-cost, and manufacturable approach to separate the finished CMOS circuits from the host silicon substrate. The overall...
Machine-Type Communications (MTC) is a rapidly growing technology, which is expected to generate significant revenues to mobile network operators. In particular, smart grid is predicted to become one of the key MTC use cases that involves meters autonomously reporting information to a grid infrastructure. With this research, we consider a typical smart metering MTC application scenario in the context...
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