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Design and Implementation of a Re-configurable Versatile Direct Digital Synthesis based Pulse Generator
(2021-07-02)
Direct digital synthesis (DDS) technology has replaced many traditional analogue circuit functions. The frequency, amplitude and phase of a waveform generated using DDS can be precisely controlled. It is possible to achieve ...
A Step-Down ZVS Power Converter with Self-Driven Synchronous Rectifier
(IEEE, 2021-04-27)
In this paper a step-down ZVS power converter with a self-driven synchronous rectifier (SDSR) for a low-voltage high-current applications is proposed. A transformer leakage inductance, a resonant capacitor and a diode make ...
A Step-Down ZVS Power Converter with Self-Driven Synchronous Rectifier
(IEEE, 2021-04-27)
In this paper a step-down ZVS power converter with a self-driven synchronous rectifier (SDSR) for a low-voltage high-current applications is proposed. A transformer leakage inductance, a resonant capacitor and a diode make ...
Design and Implementation of a Reconfigurable Wideband Radio Frequency Spectrum Analyzer with Image Rejection in the Digital Domain
(2021-02-19)
Most existing radio frequency (RF) spectrum analyzers use conventional superheterodyne architecture to remove images associated with the down conversion of RF input frequency to some intermediate frequency (IF) for further ...
Low-power, high-linearity transconductor with a high tolerance for process and temperature variations
(2020-11-18)
A novel scheme for tunable complementary metal–oxide–semiconductor (CMOS) transconductor robust against process and temperature (PT) variations is presented. The proposed configuration is a voltage controlled circuit based ...
Robust Statistics Evidence Based Secure Cooperative Spectrum Sensing for Cognitive Radio Networks
(IEEE, 2020-07-27)
Cognitive radio networks (CRNs), an assemble of smart schemes intended for permitting secondary users (SUs) to opportunistically access spectral bands vacant by primary user (PU), has been deliberated as a solution to ...
Energy Efficient Relay Selection Algorithm for Virtual MIMO Cooperative Networks
(IEEE, 2020-07-27)
In this paper, we propose a distance based energy efficient multiple relay selection algorithm for cooperative virtual Multiple-Input-Multiple-Output (MIMO). The fundamentals of this method is to forward the source signal ...
Jointly optimized echo state network for short-term channel state information prediction of fading channel
(2020-07-27)
Accurately obtaining channel state information (CSI) in wireless systems is significant but challenging. This paper focuses the technique of machine-learning-based channel estimation. In particular, a jointly optimized ...
Efficient Evidence-based Decision Fusion Scheme for Cooperative Spectrum Sensing in Cognitive Radio Networks
(2020-04-01)
In this article, an evidence based decision fusion cooperative spectrum sensing (CSS) schemes has been considered for overcoming the hidden terminal problem, improving reliability, and increasing SU agility. Under practical ...
A Stochastic based Physical Layer Security in Cognitive Radio Networks: Cognitive Relay to Fusion Center
(IEEE, 2020-01-16)
Cognitive radio networks (CRNs) are found to be, without difficulty wide-open to external malicious threats. Secure communication is an important prerequisite for forthcoming fifth-generation (5G) systems, and CRs are not ...