WIRELESS SATELLITE COMMUNICATION SYSTEMS

Introduction
Definition: Communications Satellite is a satellite stationed in geosynchronous orbit that acts as a microwave relay station, receiving signals sent from a ground-based station (earth station), amplifying them, and retransmitting them on a different frequency to another ground-based station. Initially used for telephone and television signals, communications satellites can also be used for high-speed transmission of various multimedia services such as data communications, video and graphic image transfer and interactive conferencing.
Overview
Many satellites now orbit the earth, bringing satellite communications to almost all parts of the globe. To use a satellite all you need is terminal hardware at your station and the leasing of bandwidth. You will need a big receiving dish, if the signal in your area is weak.
Forms of satellite networks
1. Information broadcast- This is used for one-way communication. Data can be transmitted simultaneously in real time (as it ...