This paper presents a study of the QPSK (Quadrature Phase Shift Keying) modulation technique using rician channel in CDMA (Code division multiple access) systems. The selection of good modulation technique is a important factor for analyzing the performance of communication system. The simulated result...

In this paper we are going to investigate the performance of Least Squares Error (LSE) Algorithm in OFDM channel estimation. It is based on the energy of pilot tones and data symbols. We first calculate the mean square error (MSE) of the LS channel estimate. LSE algorithm is used to enhance the channel...

This paper holds a research about the Semantic Web and E-learning along with a proposed model for a Semantically Active E-Learning system. This system makes use of some E-Learning agents, semantic web services, ontologies and properties of ontology. Protégé is used to implement this E-Learning system.

Artificial intelligence involves two basic ideas. First, it involves studying the thought processes of human beings. Second, it deals with representing those processes via machines (like computers, robots, etc.). One of the main benefits of speech recognition system is that it lets user do other works...

Technology is getting advance day by day and it is providing the better life-style to human-beings. But when it comes to the safety and security of the people, the advancement of technology seems lacking. So as per the security and safety concern, the Global Positioning System (GPS) is a real innovation...

A novel compact reconfigurable multiband antenna is proposed. The antenna is designed with the 40mm x 40mm substrate with the dielectric constant of 10.2 and the thickness of 1.27mm. the substrate used is Roger RT/Duroid 6010. By achieving the switching multiband functionality, this antenna is almost...

This paper describes the database development of three different types of spoken words Isolated, Spoken Hindi Hybrid Paired Words and Spoken Hindi Partially Reduplicated words. The main focus is on the comparative analysis of these Words by using endpoint detection algorithm. The development is done...

Recent advances in wavelength division Multiplexing (WDM) technology are expected to facilitate bandwidth –intensive multicast applications. However, a single fiber (bundle) cut on such a networks can disrupt the transmission of information to several destination nodes on a light tree based multicast...

A comparison of return-lose for different configuration of inset-fed microstrip patch antenna is shown in this paper. Here single patch of microstrip antenna is fed by single and double inset-microstrip feeds separately in different configurations (i.e. their dimensions are kept same only numbers of...

This paper presents comparison of three and four feed microstrip patch antenna. Return loss of the proposed antennas are analyzed at operating frequency range 1 to 10 GHz. The proposed antenna is simulated using HFSS11 software. The epoxy and inset feeding is used as the substrate material and designing...

Correlation techniques are used to find whether the electrocardiogram (ECG) is normal or abnormal. These correlation techniques could be further used to detect the type of abnormality present in the abnormal ECG. Reference ECG signals could be stored for all type of abnormalities and the test ECG signal...

For mobile satellite systems, quality of service and service availability depend on the line-of-sight satellite availability. The satellite visibility is one of the major factors which influence satellite link availability, since the satellite channel behavior is depended on the link conditions between...

Order reduction is very important issue in control system. Analysis, simulation and response of a lower order system are simple and fast. So in this paper, a simple but very effective approach based on Routh Criterion is used to determine reduced order model of an unstable open-loop system. Aircraft...

In the present scenario the world is moving towards automated systems. To design a hardware which is able to interact via internet is a challenging task in design of any automation system. A new term known as ’Internet of things’ also faces the same kind challenge, of interfacing a dumb electronic terminal...

In order to measure the velocity of a missile, several models have been discussed in this paper. It deals with the tracking and following of single/multiple missile in a sequence of frames and the velocity of the missile is determined. Algorithms have been developed for improving the image quality, segmenta-...

Evaluating the trust of participating entities increases the security and collaboration among members. This work presents the trust accumulation schemes using lightweight vibration signals. In all scenarios virtual nodes are considered to create subgroup in close vicinity. It is observed that trust accumulation...