MOBILE COMPUTING

 Covers Satellite Communications, GSM specification and explain functional architecture of GSM , Introduction to Wireless LAN and IEEE 802.11, WIRELESS LANS AND PANS, Multiplexing, MULTIPLE ACCESS TECHNIQUES Satellite Communications  Overview Basics of Satellites Types of Satellites Capacity Allocation  Basics : HOW DO SATELLITES WORK Two stations on Earth want to communicate through radio broadcast but are too far away to use conventional means. The two stations can use a satellite as a relay station for their communication One Earth Station sends a transmission to the satellite. This is called a Uplink. The satellite Transponder converts the signal and sends it down to the second earth station. This is called a Downlink. ADVANTAGES OF SATELLITES The advantages of satellite communication over terrestrial communication are: The coverage area of a satellite greatly exceeds that of a terrestrial system. Transmission cost of a satellite is independent of the distance from the center of t