Wireless Communication Transmission Media

Radio Frequency Signals (RF) Starting over 100 years ago were first broadcast carrying morse code Audio, television broadcast, cordless telephone, remote controls, cable satellite tv, Data-Wifi, bluetooth, Wimax 3G and 4G (commonlink is RF) Used to transfer all types of information

What is wireless communication? Also called as Unguided Is the transfer of information between two or more points that are not connected by an electrical conductor Transmissions and receptions are achieved by means of an antenna and can be Directional or Omnidirectional

Wireless communication media various types Bluetooth Satellite Microwave Infrared Radio wave

Wireless communication media various types IEEE 802.15.1 Wireless communications technology standard for exchanging data over short distances Minimum range of 10 meters or 30 feet. Bluetooth V4.2 Bluetooth Satellite Microwave Infrared Radio wave -Invented by telecom vendor Ericsson in 1994 -When two Bluetooth enabled devices connect to each other, this is called pairing

Wireless communication media various types It is an artificial object which has been intentionally placed into orbit Sometimes called artificial satellites Sent to space for the purpose of telecommunications GPS (Global Positioning System) Space based global navigation system using GPS satellite GPS tell us also: Speed, Altitude, Distance to destination and sunrise and sunset time Bluetooth Satellite Microwave Infrared Radio wave natural satellite  - moon 173 known natural satellites Sputnik 1, launched by the Soviet Union in October 4, 1957 GPS – not only handheld, it is a system consisting of more than 28 satellite 12thousand miles above 7000 miles an hour, rotates 2times a day, built to last about 10 yrs 60’s-development US Millitary only-------1983 Korean airlines flight 007 (269 people) –error in navigation High percentage of telling inaccurate info Ronald regan-free available and common good SPUTNIK 1 REPLICA

Wireless communication media various types Microwave transmission refers to the technology of transmitting information by the use of electromagnetic waves: microwaves The advantage of the high frequency of microwaves gives the microwave band a very large information-carrying capacity Bluetooth Satellite Microwave Infrared Radio wave A telecommunications tower with a variety of dish antennas for microwave relay

Wireless communication media various types Allows devices to communicate via short-range wireless signals Files and other digital data can transfer bidirectional Infrared network adapters both transmit and receive data through ports on the rear or side of a device Infrared radiation was discovered in 1800 by astronomer Sir William Herschel SIR (Serial Infrared): 115.2Kbps MIR (Medium Infrared): 1.152Mbps FIR (Fast Infrared): 4Mbps VFIR (Very Fast Infrared): 16Mbps Bluetooth Satellite Microwave Infrared Radio wave Infrared Data Association (IrDA) standards for short- range infrared data transmission SIR-mobile phones and many portable devices MIR-rarely adopted FIR-laptops and digital cameras and some Pocket PC PDAs VFIR -supported by Windows XP

Wireless communication media various types type of electromagnetic radiation with wavelengths in the electromagnetic spectrum Used for fixed and mobile radio communication, broadcasting, radar and other navigating systems Radio waves have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths ranging from 1 millimetre to 100 kilometres Bluetooth Satellite Microwave Infrared Radio wave longer than infrared light.

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