Robust Study and Evaluate the BER Performance of Multiuser Massive MIMO Systems

Abstract The need for higher data rates led researchers to propose another technique called a multiuser massive MIMO system that offers a larger bandwidth compared to the present wireless communication systems. In addition, significant improvement in communications quality of service (QOS), energy and spectral efficiencies and in the reduction of the cost is expected in […]

A Hybrid Pattern Recognition System for Detecting Buried Object in GPR Images

Abstract It is very difficult to evaluate the shape of the buried objects using Ground Penetrating Radar (GPR). In this study, 180 GPR B scan images were classified by using different classification algorithms. GPR-B scan images of objects with different shapes in various depths were obtained by using GprMax simulation program. Noise in these images […]

Development of Micro patch Antenna with Proximity Coupler Fed Technique for WLAN Application

Abstract This paper presents an analysis and designing single patch microstrip antenna with proximity coupler fed technique at 2.40 GHz resonant frequency appropriate for wireless LAN application. The software used to simulate the patch antenna is HFSS. This antenna is fed by a 50 Ω single microstrip line feeding based on quarter wave impedance matching […]

Performance of First and Second Order Sliding Mode Control Strategies for a Simple Pendulum

Abstract Sliding mode control approach is recognized as one of the efficient tools to design robust controllers for complex high-order dynamic plant operating under uncertainty conditions. The main advantages of sliding mode are low sensitivity to plant parameter variations and disturbances can be completely eliminated. This paper deals with the modeling and control of simple […]

Design of High Performance Low Leakage FPGA Slices using Control Logic

Abstract Field Programmable Gate Arrays (FPGAs) are significant in digital designs, Scientific Computing, Digital Signal Processing and Tele-communications. To use re-configurable technology in the portable applications, the devices that consume significantly less power and programmable are essential. In FPGAs, leakage power has become a major component as the technology evolves to deep sub-micron. An effective […]

Design of Sliding Mode Controller for Field Controlled DC Motor Under Parameter Uncertainties

Abstract Designing the speed controller for a field controlled DC motor with uncertain parameters is a challenging task. Sliding Mode Control technique is widely used robust controller design methodology that takes care of uncertain parameters. Here, in this paper, first order sliding Mode controller is designed to regulate the speed of a DC motor using […]

Control of Coupled Tank Liquid Level System Using Sliding Mode Control

Abstract Designing a controller for coupled tank liquid level system under tracking conditions is a challenging task.  First order sliding mode controller is designed and implemented for liquid level coupled tank system under distinct tracking signals. The proposed controller was designed by using tracking error approach.  The designed non-linear controller is capable of tracking the […]

Design of 32 Bit Data path Unit of ARM7 Microprocessor using Sub threshold Current Mode Logic

Abstract In the present days, Very Large Scale Integration (VLSI) is focused upon designing energy efficient electronic devices. These are nothing but the embedded gadgets whose core is a processor. Advanced RISC Machine (ARM) is one of the families of computer processors which have an reduced instruction set architecture. Current Mode Logic (CML) is one […]

Five level inverter with SVPWM Control Technique

Abstract This paper provides the proposed single phase five level inverter with Dc link Switches based on SVPWM technique. This paper focuses on improving harmonic performance of the multilevel inverter and quality of output voltage waveform compared to conventional two-level inverter. It uses two carrier wave and three reference waves which are generated fromSVPWM technique. […]

PID Controller Design for Non-Minimum Phase Time-Delay Systems Using Optimization Methods

Abstract Non-minimum phase systems are difficult to control with conventional methods because of their inherent characteristics of undershoot. The complexity in control of such systems increases when time delay is added. These systems will exhibit undershoot in time-response and oscillations in the high frequency region in magnitude frequency response. This paper focuses on design of […]