Design on Hybrid RFID & Ultrasound Based 2D Indoor Positioning System

As the positioning technology is becoming more advanced, people’s demands increase progressively on the indoor positioning system, since Global Positioning System (GPS) already cannot meet these demands. In order to solve the problem of Continue reading

RFID Emergency System for Tumble Detection of Solitary People

RFID (Radio Frequency Identification) system is a wireless system without any kinds of mechanical or optical connection between identifying and detected objects. It consists of two basic devices: a reader and tag. Recently with the development of the Continue reading

Energy Optimization Mechanism for Mobile Terminals using Vertical Handoff between WLAN and CDMA2000 Networks

This paper presents energy optimization mechanism for mobile terminals (MTs) using vertical handoff between Wireless LAN (WLAN) and CDMA2000 networks. Several techniques for optimizing the power consumption of MTs have been considered in literature. Some of these techniques could be used Continue reading