Real Time Surge Voltage Control using Smart IoT
Efficient Transmission of FECG Signal using MIMO – OFDM
Deep Convolutional Auto-Encoders for Emotion Recognition from Facial Expressions
A Survey on Network Admission Control Solution in 6LoWPAN using Cryptographic Mechanism
A Comprehensive Review of Visible Light Communication (VLC)
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
Low pass filter is used to select low frequency signal and reject high frequency signal. Wireless devices require small devices to fulfil the miniaturization requirement. Here Defected Ground Structure (DGS) methodology is used for reducing the size of the Low Pass Filter. For low cut off frequency, we require large size filter and for high cut off frequency, we require small size filter. In this paper, low pass filter with new defected ground structure is presented. By using this defected ground structure the cut off frequency of Low Pass Filter is reduced from 2.1GHz to 1.19 GHz. Therefore, filter of cut off frequency 2.1GHz is now operating at cut off frequency 1.19GHz. So the size of the filter of cut off frequency 1.19GHz is reduced to 41.32 % as compared to the size of filter of cut off frequency 1.19GHz designed by conventional method.
Heterogeneous network is a type of network, where several computers or devices with different protocols are connected together, for e.g. WLAN-WiMAX or WiFi-3G. Due to the advancement of technology, there is a need for mobility and uninterrupted connection. Vertical Handover Mechanism helps to have a seamless communication and mobility between these networks. The existing work defines the Admission Control (AC) and Wiener Process (WP) based prediction algorithms, but AC cannot be used directly in WiMAX, because some MSs may be served by two ASN GWs, which results in delay. So, in this paper, authors have used a WLAN-WiMAX interworking network, and in order to reduce the time delay, an architecture for Gateway Relocation is proposed. The evaluation of the proposed architecture can be seen in the simulated graphs, which comprises of many parameters like handover delay, packet Loss etc. Hence, from the proposed architecture of the heterogeneous networks, better performance can be obtained.
In this paper, a new technique is proposed to achieve size reduction of microstrip patch antenna using Defected ground microstrip patch antenna. The technique is based on etching out two rectangular slots from the metallic ground plane beneath the complementary of the patch antenna. To achieve circular polarization a probe feed with different axial ratio has been proposed. Due to unequal axial ratio of 1:2 asymmetry is introduced. The slot length is used to optimize the resonant frequency. The validity of the concept is demonstrated by considering two resonance frequencies which are 2 obtained at 2.4 GHz and 2 GHz. The proposed antenna dimension is 40x70 mm . The dielectric substrate FR4_epoxy of relative permittivity 4.4 and dielectric loss tangent 0.02 is used for simulating the results. The simulation is done on Advanced Design System (ADS) version 11.
Manifold attempts have been made to produce reliable and efficient means of detecting problems in ships and give proper help in time. The VDR (Voyage Data Recorder) in ships are used to review events that took place in the moments before an incident and help to identify the cause of marine accidents. Voyage Data Recorder contains audio information about incidents occurring inside and outside the ship, mainly the captain’s room. Presently, In this VDR the data is saved only in RAM. Sometimes the data can be deleted by an unknown person or an officer, who is responsible for that incident. Since it is possible to delete data from VDR, the audio is immediately uploaded to server and instant audio processing is performed. The server extracts important features, analyses it immediately and stores it in the database. The important features are pitch, amplitude, positive amplitude, negative amplitude, zero crossing rate, and magnitude and convert audio time signal into frequency signal using Fast Fourier Transform(FFT). From the frequency, server extracts features such as mean, variance ,standard deviation, energy, skewness, and kurtosis. Finally, the system uses, thresholding and SVM classification to classify the signal, whether it is in normal class or abnormal class. The SVM classifier takes a set of input data and predicts. For each given input, two possible classes form the output. The SVM classification is already trained with possible training set. Now our new features are given to the SVM classification. If maximum number of data is in abnormal class, then immediately an alert is sent to the ship police and owner of the ship and also a report is generated, which is used to review the data and unwanted events that occurred in the ship for legal purposes.
A compact microstrip patch antenna with defected ground structure for WiMAX and WLAN applications is proposed in this paper. The substrate used for this antenna is ROGER 3003 with dimensions 36 x 24mm2 . The front side of the antenna consists of the square shape strip enclosing a U shape strip, which is connected to the square through a small strip. The ground i.e. on the back side of the substrate, having curved shape, three square shaped polygons are etched through, that will provide the defected ground plane. The main outer square is fed by a microstrip feed line having 50Ω impedance. The defected ground structure will provide better impedance matching. This proposed antenna has large bandwidth (0.33 GHz (2.20-2.53 GHz), 1.15 GHz (3.09-4.24 GHz) and 0.86 GHz (5.03-5.89 GHz)), high gain (2.81 dBi (2.20- 2.53 GHz), 2.65 dBi (3.09-4.24 GHz) and 4.38 dBi (5.03-5.89 GHz)) and good antenna total efficiency.
