Based on the experimental results, a simplified model for low-voltage powerline used as a high frequency communication channel is presented. With this model, the Orthogonal Frequency Division Multiplexing (OFDM) based high rate digital communication over low-voltage powerline is analyzed and simulated. The capability of the signal transmission system in overcoming multi-path interference and se...

  Background: This study has aimed to measure the patient dose in entire spine radiography by EOS system in comparison with the digital radiography. Methods: EOS stereo-radiography was used for frontal and lateral view spine imaging in 41 patients in a prospective analytical study. A calibrated dose area product (DAP) meter was used for calibration of the DAP in EOS system. The accuracy and pr...

in the last two decades, the trend in healthcare information technology has been towards digital and multimedia concepts. the next generation of healthcare information systems will consist of a vast network of heterogeneous, autonomous and distributed imaging scanners, hospital information systems (his), medical information from clinical departments such as radiology information systems (ris), ...

In this paper, a comprehensive study has been made on performance assessment of a single relayed cooperative wireless communication system under implementation of OFDM aided MIMO technology. This paper provides a new insight on system performance with proposed STBC encoded MIMO-OFDM radio interface technology, four channel equalization techniques (ZF, MMSE, ZF-SIC and MMSE-SIC) and three digita...

The manner in which scholarly research is conducted is changing rapidly. This is most evident in Science and Engineering, but similar revolutionary trends are becoming apparent across disciplines. Improvements in computing and network technologies, digital data capture techniques, and powerful data mining techniques enable research practices that are highly collaborative, network-based, and dat...

Emerging technologies like ATM, WDM or xDSL enable broadband communication over wireline networks. In future every user could be equipped with a broadband access point to multimedia information and communication data services. Mobile data systems like GSM or even UMTS are lacking in bandwidth for broadband multimedia. Furthermore the raise of the internet information systems like the WWW increa...

This dissertation studies the Multimedia Message Services that based on the digital television system, and it is called TVMMS for short. The author discusses the TVMMS architecture, and specifies the address number distributed for every entity and addressing scheme. The TVMMS can perform the following functions: point to point communication between STB, communication between STB (Set Top Box) a...

Now a days is fully digitalized time and communication is the one of the most important part in our modern life [1]. Everywhere digital system are present like railway, radar, satellite, missile launchers, GPS, Wi-Fi, radio transmission, cellular mobile communication, vehicles, sensors, etc. digital signal play very important role in digital communication system for assessment of signal securit...

A channel filter has been designed for Digital Down converter (DDC),that meets the standard of WiMAX in wireless communication. WiMAX is a technology emerging in the wireless communication system, in order to enhance the broadband wireless internet access. Digital Up Converter (DUC) and Digital Down Converter (DDC) are integral part of WiMAX system, that results in efficient low cost WiMAX syst...