An embedded FPGA-SoC framework and its usage in moving object tracking application

Design Automation for Embedded Systems - Moving object tracking is a computation-intensive operation that requires accelerating hardware solution. In this work, a high-performance design for mean...     

Design and Implementation of Optical Signal Reinstatement Technique for High DPSK RZ Transceiver Scheme

Wireless Personal Communications - Optical signal reinstatement (OSR) is a common technique used in high-speed communication systems. OSR can be achieved using various techniques such as;...     

A new two-dimensional C-V model for prediction of maximum frequency of oscillation (fmax) of deep submicron AlGaN/GaN HEMT for microwave and millimeter wave applications

An analytical two-dimensional capacitance-voltage model for AlGaN/GaN high electron mobility transistor (HEMTs) is developed, which is valid from a linear to saturation region. The gate source and gate drain capacitances are calculated for 120 nm gate length including the effects of fringing field capacitances. We obtain a cut-off frequency (f_T) of 120 GHz and maximum frequency of oscillations (f_max) of 160 GHz. The model is very useful for microwave circuit design and analysis. Additionally, these devices allow a high operating voltage V_DS, which is demonstrated in the present analysis. These results show an excellent agreement when compared with the experimental data.     

A new controller for boost dc–dc converters based on a novel sliding surface

ABSTRACT

In this paper, two control schemes for boost converters affected by uncertainties in input voltage and load are proposed. The boost converter dynamics is redefined in terms of new state variables to facilitate the use of a disturbance observer that can estimate matched and unmatched disturbances. A sliding surface, which is new in the context of boost converters, is proposed to enable tracking and regulation of output voltage without requiring measurement of input voltage and load current. The stability of the overall system including the disturbance observer, the sliding variable and the output is proved. The performance of the schemes is assessed for regulation of output voltage and tracking of reference voltage by simulation as well as experimentation in which various types of uncertainties and various types of reference voltages are considered.     

Local pixel statistics based impulse detection and hybrid color filtering for restoration of digital color images

This paper presents a two stage filtering system to remove random valued impulse noise from color images based on local statistics of the filtering window under consideration. In the first stage, to detect the noisy pixel, the locally adaptive threshold is derived from the pixels of the filtering window. In the second stage, the restoration of the noisy pixel is done on the basis of brightness and chromaticity information obtained from the neighbouring pixels in the filtering window. Simulation results show that the proposed scheme yields much superior performance in comparison with other color image filtering methods.     

Exploring Blockchain and Smart Contract Technology for Reliable and Secure Land Registration and Record Management

The most significant issue in the government registry department is the duplicate registry of land in the current scenario. These kinds of problems are increasing day by day by day, which necessitates the advancement of the existing registry process system. It is a manual process that a typical stamp-based or newly not secure online process (only a few places). Use of a manual process, there are many issues in the duplicate registry of a particular land. The final registry, where the landlord has a stamp paper copy and sale deed or a specific number of the property. One receipt copy at the land registry department for their record. Blockchain has emerged as a new technology to resolve or handle the above-said issue of the current system, a distributed ledger that is a timestamp and immutable. Being immutable, forgeries related to the particular land during the registry are not allowed. This concept provides trust and consensus among all entities in the network or system. In this paper, we propose a framework for automated maintains a record of registry papers. This framework will also resolve the most effort to loan clearance operations and provide transparency in government e-governance. The system handled by the blockchain network, instead of existing typical manual processor online registry record maintain the process, it includes: An authentication scheme at multiple levels to make the blockchain-based framework secure, a quick verification for all the stack holders (bank, registry department, buyer, and seller), and apply Smart Contract to automate check the loan process as government norms and facilitate buyer and seller selling and purchase. The obtained consequences are examined against the latest approaches to indicate the supremacy of the proposed framework and provide transparent, accountable, incoherent data with the different government departments.

     

Tracking-based baseline restoration circuit for acquisition of bio signals

Most bio signal waveforms have a baseline that may drift over a large range compared to the excursion of the signal component. A circuit is developed, based on the amplitude tracking technique, for fast estimation and removal of the baseline drift, for effective use of the input dynamic range of the signal acquisition setup     

Formal modeling and verification of software‐defined networks: A survey

Unlike traditional networking devices, control and management plane are decoupled from data plane in software‐defined networks (SDN). The logically centralized control and management plane facilitate dynamic orchestration of network resources, services, and policies by writing software programs. This provides much needed flexibility and programmability where networking rules and policies can be modified dynamically depending upon the application context. As the operation of network services entirely depends on a program, a small fault may induce several issues which can adversely affect the expected behavior of the network. Formal modeling and verification help in catching inconsistencies and existence of errors prior to the deployment of the programs that control the behavior of a network. In this paper, we provide a comprehensive survey of tools and techniques available in the literature for formal modeling and verification of SDN. These tools and techniques are classified based on their types, the components of SDN where they can be applied, and the design and development phase when they are utilized. In particular, their respective benefits and limitations are discussed in terms of ease of use, interfaces, and the ability to capture and verify intended network properties.     

Validation of Existing Software Effort Estimation Techniques in Context with Mobile Software Applications

Wireless Personal Communications - In the current generation of information technology, mobile applications (apps) have become an essential and momentous source to publicize the information across...