Ultra-Wide Band Radar and its Applications
Voice over Internet Protocol Codec Performance in Interactive Streaming Environment
Design and Simulation of Phased Array Antenna 5G Applications
A Study on Energy Consumption and Impact on Network Lifetime using ANODR and DYMO Routing Protocol in MANETs using QualNet Simulator
A Review on Evolution, Expectations and Key Enabling Techniques of 5G
Cognitive Radio Simulator for Mobile Networks: Design and Implementation
Reduced End-To-End Delay for Manets using SHSP-EA3ACK Algorithm
Light Fidelity Design for Audio Transmission Using Light Dependent Resistor
Dynamic Digital Parking System
Performance Analysis of Multi User Transmit Antenna Selection Systems over TWDP Fading Channels
Comparison of Wavelet Transforms For Denoising And Analysis Of PCG Signal
Video Shot Boundary Detection – Comparison of Color Histogram and Gist Method
Curvelets with New Quantizer for Image Compression
Comparison of Hybrid Diversity Systems Over Rayleigh Fading Channel
Design of Close Loop Dual-Band BPF Using CascadedOpen Loop Triangular Ring Resonator Loaded With Open Stubs
Smart Grid is the integration of Electrical and Communication network in which data and power flows bi-directionally. The activity of a Smart Grid heavily depends on the instant electrical data received through the communication network. The massiveness of devices and direct communication with the end user makes the Smart Grid infrastructure easily prone to attacks. A slight modification in the data by an unauthorized person may destruct the entire grid. Characteristics like vast data generation, complexity, prompt speed and large geographical distribution area limits the existing security algorithms from being used in the communication network of the Smart Grid. In this paper, we propose an efficient security algorithm using Dual Euclidean algorithm along with its key management technique for Smart Grid application. The proposed algorithm uses two keys to encrypt the data which provides NP-hard complexity and the adversary cannot reveal the original data without knowing both the keys. The performance and security of the proposed algorithm are evaluated and compared with AES algorithm. The simulation results demonstrate that proposed algorithm is suitable for Smart Grid applications.
In this paper, a single layer wideband, probe fed modified U-slot microstrip patch antenna is designed for four-band communication system. The proposed antenna has impedance bandwidth of 28.57%(1.2 -1.4 GHz), 14.28%(2.6-3.03 GHz), 5.12%(5.7-6.05 GHz) and 8.9%(7.5-8.2 GHz) at center frequency 1.4 GHz, 2.8 GHz, 5.85 GHz, 7.85 GHz, with gain of 4dB, 10.4dB, 6.1dB, and 10dB. High gain of 10.4dB and 10dB is achieved at center frequency 2.8GHz and 7.85GHz respectively which is applicable for radar application and satellite application. The proposed antenna is designed on a single layer substrate Arlon AD250A with defected ground plane. Antenna is designed and simulated using HFSS v13 software.
The ultra wideband (UWB) technology plays a major portrayal now a days. The ultra wideband (UWB) technology has encountered numerous significant advancements as of late. Then again, there are still more challenges in making this technology mainstream and open to its finest use. One specific challenge is the UWB antenna with notched bands. The late apportionment of the 3.1-10.6 GHz range by the Federal communications commission (FCC) in 2002 for Ultra Wide band applications, has displayed an appealing open doors and tackles for antenna designers in the field of wireless communications. As indicated by FCC definition, the technology which possesses greater than 500MHz of data transfer capacity, or greater than 25% of the operating centre frequency, is considered as ultra wideband. In this FCC allocation of frequency band for UWB applications, there are now a few narrow band communication systems existing, which might conceivably interfere with the UWB systems. Thus there is always necessity of design and advancement of UWB antenna with band-notched characteristic. This paper demonstrates recto-circular patch antenna with band notched characteristic which is suitable for ultra wideband (UWB) applications. The antenna with height of 1.5 mm and dielectric constant is used for design. Furthermore, fairly good radiation pattern, return loss and gain of antenna are presented, which shows that proposed antenna is well suited for distinctive UWB applications.
In co-operative spectrum sensing system, secondary users co-operate among themselves, improving the cognitive radio spectrum sensing performance. The presence of two or more malicious user in the secondary users severely degrades the performance of the cognitive radio spectrum sensing system. In this paper, the author have studied the detection and elimination of the malicious users in a co-operative spectrum sensing system using clustering technique namely k-mean clustering and compared its performance with Dixon's outlier test and box plot test. The performance of the system with different outlier tests is shown by plotting the receiver operating characteristics curves. From this we can show that cluster removal method outperforms the Dixon's outlier test and box plot test for the case of two or three malicious users in a co-operative spectrum sensing system for cognitive radio network.
Radio Resource Management(RRM) in LTE MBMS system is the research issue addressed by this paper. LTE-advanced is in rapid process such that more and more people concentrate on system performance such as high data rates and system capacity especially with cell edge users. The proposed low complexity algorithm is designed to improve overall data rates of the system. It is proposed to reduce the computational cost. Simulation results are carried out by considering Long Term Evolution system, aiming to improve the Aggregate date rate (ADR) and system throughput with low computational cost.
This paper presents the survey of mobile learning in education environment. Technology and trends rapidly increase day by day and the evolution of 4G system is being implemented. Currently users of PDA and Smartphones are using whatsapp's applications to save cost and time. The methodology of the paper is based on survey of earlier research and latest research. The investigation of Mobile learning in Universities and Education Institutions has been discussed. Mobile learning provides lot of benefits to the student at the moment. Students can easily learn through mobile, Smartphone and PDA using internet connection. The objective this paper is to present the analysis of mobile learning and education.