Bandwidth Estimation in Network Probing Techniques Utilizing Min-Plus Algebraic Methods
Diagnosis of Anemia using Non-Invasive Anemia Detector through Parametrical Analysis
The Effectiveness of Jaya Optimization for Energy Aware Cluster Based Routing in Wireless Sensor Networks
Stress Analysis and Detection from Wearable Devices
Intrusion-Tolerant Sink Configuration: A Key to Prolonged Lifetime in Wireless Sensor Networks
Channel Estimation and It’s Techniques: A Survey
Performance Evaluation of Advanced Congestion Control Mechanisms for COAP
Impact of Mobility on Power Consumption in RPL
Implementation of Traffic Engineering Technique in MPLS Network using RSVP
FER Performance Analysis of Adaptive MIMO with OSTBC for Wireless Communication by QPSK Modulation Technique
DGS Based MIMO Microstrip Antenna for Wireless Applications
A Review on Optimized FFT/IFFT Architectures for OFDM Systems
Balanced Unequal Clustering AlgorithmFor Wireless Sensor Network
HHT and DWT Based MIMO-OFDM for Various ModulationSchemes: A Comparative Approach
Study and Comparison of Distributed Energy Efficient Clustering Protocols in Wireless Sensor Network: A Review
Diagnosis of Anemia using Non-Invasive Anemia Detector through Parametrical Analysis
Currently available Wireless Sensor Network (WSN) tools may be adapted for the Wireless Multimedia Sensor Network (WMSN). However, this requires more effort to configure and tune such tools for the requirements of current WMSN. On the other hand, many extensions for available WSN tools were developed to extend their functionalities in order to support WMSN. Although this seems to solve the problem, such extensions are usually developed as layers or plugins over the existing ones, which introduce many performance issues. In this paper, Castalia is extended to support the multimedia content simulation. First, the general multimedia requirements are discussed and defined, then the Castalia is enhanced by adding the defined requirements.
In this paper, coplanar waveguide fed patch antenna with quad band application is presented. The proposed antenna 3 has a compact size of (50×30×1.6 mm ). The design consist four bands from (1.66 GHz to 2.2 GHz) centered at 1.80 GHz, is better for wireless application from (3.55GHz to 3.8 GHz) centered at 3.5 GHz for WIMAX, from (4.30 GHz to 5.07 GHz ) centered at 4.7 GHz and from (5.7 GHz to 6.02 GHz ) centered at 5.8 GHz for WLAN application. A good return loss of more than -20 dB are achieved which are making it compatible for various mobile broadband application. The objective of the proposed antenna is to cover the various L band and C band applications. Further, the proposed antenna has low profile which makes easy installation in different devices. The whole simulation is done by using HFSS-13 software.
Orthogonal Frequency Division Multiplexing (OFDM) is a wireless transmission technique in which the digital data are transmitted in a radio environment at a very high speed. But one of the major drawbacks of OFDM system is, high peak to average power ratio which demands costly linear amplifiers with wide dynamic range. In this paper, less-complexity based partial transmit sequence technique is used for reducing the PAPR of OFDM system. PTS techniques can improve the PAPR statistics of an OFDM signals, but the computational complexity is a potential problem for the implementation in practical systems. Inorder to reduce this computational complexity, an optimization algorithm can be used. This paper shows the comparison between two population-based stochastic search techniques which is widely used in many scientific and engineering fields. Here, the Differential Evolutionary (DE) algorithm is compared with the Genetic Algorithm (GA).
This paper presents the simulation study of an ultra-wideband Dielectric Resonator Antenna (DRA). The simulation study has been carried out using CST Microwave Studio Software. The design procedure and simulation results of the rectangular dielectric resonator antenna and N-shaped dielectric resonator antenna are compared. The proposed antenna is designed on FR4 substrate with dielectric constant of = 4.6 and the overall size of the proposed DR antenna r 2 is 20 × 35 mm . The dielectric resonator of N- shape is only 5.12 mm thickness and a very low permittivity constant (10.2). The simulated DR antenna operates from 4.4 to 11.7 GHz to cover most of the existing wireless mobile standards. The radiation pattern is Omni-directional and has a simulated gain values up to 4 dB and the total efficiency of antenna is 99%. The results are showing acceptable performance in terms of return loss, VSWR, radiation pattern and realized gain. The results presented here may be useful in designing the portable personal communication device antennas and in analyzing the performance of these antennas for wireless communication.
A new compact wideband band pass filter is designed by using two short-ended cross coupled sections between the input and output port up to some length. Shorting of section improves its cutoff frequencies fall off. It also helps in size reduction and its covered area. It has measured 3dB pass band of (2 to 4.86) GHz band. The circuit size is reduced considerably and its size is (17.86×10.95) mm. This structure comprised of basically a ring resonator in which cross coupling and short ended section is provided. This wideband BPF is mainly applicable for IEEE defined S-Band applications. This wide band BPF was designed using ANSYS HFSS.
Compressive sensing outperforms the traditional limits of the sampling theory. Based on the principle of sparsity and incoherence, the Compressive sensing retrieves the original signal with the least number of samples compared to the conventional method. Wireless sensor network consists of a large number of sensor nodes or motes with varying size depending upon the application. The spatially distributed nodes transmit the data sensed from the field in cooperation with other nodes to the fusion center. If the monitoring field is wide, the data collected from the field is also large consuming more energy, bandwidth and capacity of the network. Increase in the energy consumption of the node results in the decrease in the lifetime of the node. Hence, to increase the lifetime of the node, the data traffic in the network is reduced by associating compressive sensing with the wireless sensor network. This paper deals with the variation of the performance metrics of wireless sensor networks, in the presence of compressive sensing.