Traditional Implementation Methods Research Articles

Simplified implementation of 3L-SVPWM algorithm and neutral-point balancing

The traditional implementation method of the three-level space vector pulse width modulation (3L-SVPWM) needs multiple region judgment and a lot of trigonometric function operation, which has a large amount of calculation and increases the burden of the microprocessor. Therefore, a simplified implementation method of the 3L-SVPWM algorithm is suggested to reduce the complexity and avoid trigonometric function calculation. The method is simply completed by comparing and doing some addition and subtraction operations on the abc-axis coordinates of the reference vector. And the neutral-point balancing is achieved by directly changing the action time of the three-phase bridge arms. Hence, the complexity of the implementation of the 3L-SVPWM algorithm is remarkably reduced. Finally, the correctness of the simplified implementation method is verified by simulation experiments.

A new smart networking architecture for container network functions

5G slices have challenging application demands from a wide variety of fields including high bandwidth, low latency and reliability. The requirements of the container network functions which are used in telecommunications are different from any other cloud native IT applications as they are used for data plane packet processing functions, together with control, signalling and media processing which have critical processing requirements. This study aims to discover high performing container networking solution by considering traffic loads and application types. The behaviour of several container cluster networking solutions -- Flannel, Weave, Libnetwork, Open Virtual Networking for Open vSwitch and Calico -- are explored with regard to the most commonly used container network functions in the form of MongoDB and web access. Evaluations show that none of the solutions provide a high throughput for all types of workload under optimum or heavy load situations. Hence, this research presents the view that traditional container networking implementation methods may not fulfill the container network functions' networking performance requirements. This is because container networking performance changes dynamically, depending on traffic load and application types. To overcome this problem, a new smart container networking architecture is proposed which allows containers to use several container networking solutions dynamically in conjunction with container monitoring tools. Eventually, the primary implementation of proposed architecture has been performed and evaluated. This research shows that proposed smart architecture delivers promising results compared to traditional implementation methods, in case appropriate decision is made during dynamic interface selection process.

A Single-Phase Step-Up Seven-Level Inverter With a Simple Implementation Method for Level-Shifted Modulation Schemes

This paper proposed a single-phase seven-level inverter topology with a simple implementation method for level-shifted modulation schemes, which includes two novelty work. One aspect of the work is the proposed inverter topology that integrates a three-time step-up ratio and capacitor voltage self-balance capability. Compared to the existing single-phase seven-level inverters, the proposed inverter reduces the number of power switches and the voltage stresses across them. The other aspect of the work is a new way to implement level-shifted modulation schemes (level-shifted carrier modulation scheme and level-shifted sine modulation scheme) by three basic steps: (1) obtaining modulation logic based on Karnaugh Map technique; (2) determining a level-shifted modulation scheme; and (3) software implementation using the general-purpose input output(GPIO) terminals and CPU timer interruption function of a DSP chip. Therefore, complex trigonometric calculations of the traditional implementation methods for carrier modulation schemes are replaced by simple logic operations of the proposed implementation method, and thus extra logic chips used in the traditional implementation methods are not necessary for the proposed implementation method. Both simulation and experimental results are presented to verify the proposed inverter topology and the proposed implementation method for level-shifted modulation schemes.

A Subwavelength Microstrip Resonator Based on Metamaterials

A metamaterial-based subwavelength microstrip resonator with high quality factor and simple fabrication process was proposed. For the experimental result, a quality factor of about 70 was achieved when the length of the resonator was about one third of the wavelength. Firstly, the mu-negative metamaterial (MNM) and the epsilon-negative metamaterial (ENM) were implemented by loading only chip capacitors or only chip inductors onto the microstrip. The implementation process is simpler in comparison to the traditional implementation method of the MNM and the ENM based on the microstrip. Then, the transmission characteristics of the heterostructure constructed of the MNM and the ENM fabricated through the simple method were investigated and the results showed that a subwavelength microstrip resonator could be built by the MNM–ENM heterostructure. Moreover, the quality-factor enhancement of the subwavelength microstrip resonator based on the MNM–ENM heterostructure was also explored. The results showed that the quality factor could be notably boosted and increased by about 15 times for the experimental result of the sample owing to more intensive confinement of the electromagnetic field when the electromagnetically induced transparency-like metamaterial was introduced at the interface of the MNM–ENM heterostructure.

Efficient FPGA implementation of modular multiplication based on Montgomery algorithm

In order to improve the efficiency of modular multiplication algorithm for FPGA implementation on the prime field modular, an efficient scheme is proposed to accomplish 256×256 bits modular multiplication algorithm. The embedded IP cores of Xilinx FPGA are efficiently utilized to design 512-bit addition and 256×256 bits multiplier. Moreover, the above modules are used to complete Montgomery modular multiplication algorithm. Compared with traditional implementation method, almost 50% running efficiency is improved in our scheme, which has important value to implement complicated cryptographic processor in hardware environment.

The Research of Data Mining Based on Neural Networks

Artificial neural network is a kind of network system that simulating human brain information processing mechanism developed on the basis of modern neurobiology research. It not only has the ability to deal with general calculation of numerical data, but also has the thinking for processing knowledge and memory ability of learning. Data mining process based on neural network consists of data preparation, rules extraction and evaluation. In this paper, the research status of data mining, neural network, development trend and application field are reviewed and this paper expounds the basic concepts of data mining, neural network, the basic model and the traditional implementation method.

Integration of Dataflow-Based Heterogeneous Multiprocessor Scheduling Techniques in GNU Radio

As the variety of off-the-shelf processors expands, traditional implementation methods of systems for digital signal processing and communication are no longer adequate to achieve design objectives in a timely manner. There is a necessity for designers to easily track the changes in computing platforms, and apply them efficiently while reusing legacy code and optimized libraries that target specialized features in single processing units. In this context, we propose an integration workflow to schedule and implement Software Defined Radio (SDR) protocols that are developed using the GNU Radio environment on heterogeneous multiprocessor platforms. We show how to utilize Single Instruction Multiple Data (SIMD) units provided in Graphics Processing Units (GPUs) along with vector accelerators implemented in General Purpose Processors (GPPs). We augment a popular SDR framework (i.e, GNU Radio) with a library that seamlessly allows offloading of algorithm kernels mapped to the GPU without changing the original protocol description. Experimental results show how our approach can be used to efficiently explore design spaces for SDR system implementation, and examine the overhead of the integrated backend (software component) library.

Team Implementation of New Technology

New technology is dramatically changing the workplace by allowing companies to increase efficiency, productivity, quality, safety, and overall profitability. An effective new technology implementation is required for companies to compete successfully in the global marketplace. Time and money wasted on unsuccessful and improper new technology implementation is counterproductive to the overall goal of improving the competitiveness and profitability of the company. Teams and teamwork have been recommended as a way to improve efficiency, productivity, quality, safety, profitability, and employee satisfaction. With the utilization of total quality management (TQM) and quality improvement (QI), each of which rely on teamwork, new technology implementations have been more successful. New technology challenges the current state of traditional implementation methods and techniques. To effectively utilize these new technologies it is best to consider all of the factors involved in the implementation process; most importantly the human elements involved. It is recommended to utilize a cooperative team oriented approach to new technology implementation, which relies heavily on soliciting employee input and participation throughout the entire process. By doing this it is hoped that the new technology can be implemented in the most effective way possible. A case study is presented to illustrate this.

Implementation of New Technology

New technology is dramatically changing the workplace in order to allow companies to increase efficiency, productivity, quality, safety, and overall profitability. An effective new technology implementation is necessary in order for companies to compete successfully in the global marketplace. Time and money wasted on unsuccessful and improper new technology implementation is counterproductive to the overall goal of improving the competitiveness and profitability of the company. Therefore this new technology challenges the current state of traditional implementation methods and techniques. To effectively utilize these new technologies it is best to consider all of the factors involved in the implementation process, such as: new technology characteristics, organization structure, task factors, and environmental characteristics, and most importantly the human elements involved. It is also recommended to utilize a cooperative approach to new technology implementation, which relies heavily on soliciting employee input and participation throughout the entire process. By taking a holistic “big picture” planned view of the situation; and being sensitive to the interactions that exist; it is hoped that the new technology can be implemented in the most effective way possible.