Sawan & Adarsh Final
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Transcript of Sawan & Adarsh Final
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BY-
E.SAWAN KUMAR
ADARSH PANDA
ETC
VITAM
WIRELESS COMMUNICATION
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Introduction
communication
wireless
History
Standards of wireless communicationModes of wireless communication
Security of wireless communication
Applications
Limitation and Difficulties in Wireless Reference
Queries
CONTENTS
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Itis the transmissionofsignalsi.e.sendingofelectromagneticwavesbyelectronictransmitters.
Sending
devicemessage
Connection
device
Communication
channelsConnection
devicemessage
Receiving
device
Sending
devicemessage
Connection
device
Communication
channelsConnection
devicemessage
Receiving
device
Sending
devicemessage
Connection
device
Communication
channelsConnection
devicemessage
Receiving
device
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INTRODUCTION
COMMUNICATION
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WIRELESS
Any type of electrical or electronicoperation accomplished without the
use of wires.
Wireless connections use air medium
to connect and send & receive data.Channel is a division in transmission
medium.
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WIRELESS
COMMUNICATIONCommunication networks are generally implemented with
some type of remote information transmission system thatuseselectromagnetic waves.
Wireless communication may be via: Radio frequency communication
Microwave communication
Infrared short range communication
Wireless modem:It is a modulator-demodulator whichenablescommunication at fastest speeds, typically in bits per second.
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HISTORY Most credit goes to Guglielmo Marconi, The Father of
Radio, with the initiation of wireless technology
1894: Marconi experimented with Hertzian Waves(radio waves) to produce and detect waves over longdistances
1896: Marconi established the Wireless Telegraph &Signal Company, the first radio factory
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Standards of wireless
802.11b- Actually the first of the 802.11 standards. Max Speed 11MB/sec. 128 bit encryption. 2.4 GHz
operational frequency.
802.11a- Best suited for large businesses concerned with
security 54 MB/sec max speed. 5 GHz operating frequency. 152 or
256 bit level of encryption.
802.11g- Best of both worlds for the average user.
2.4 GHz, 54 MB/sec, 128 bit encryption.
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Standards currently being utilized
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Modes of wireless communication
Wireless communication can be via:
Radio frequency communication.
Microwave communication, for example long-range line-of-sight via highly directional antennas, or short-rangecommunication.
Infrared (IR) short-range communication, for example fromremote controls or via Infrared Data Association (IrDA).
Applications may involve point-to-point communication, point-to-multipoint communication, broadcasting, cellular networks
and other wireless networks. 9
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WIRELESS -APPLICATIONS
BLUETOOTH
WI-FI WI-MAX
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Bluetooth Bluetooth is an open specification for wireless
communication and networking
Personal computers
Mobile phones
Other wireless devices
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What is Wi-Fi ?
Wi-Fi is an abbreviation for Wireless Fidelity and a catchall phrase for the several different standards andrecommendations that comprise wireless networking.
Wi-Fi enables the user to deploy a computer networkwithout needing to run cable throughout the facility.
Enables faster connections
Better range Better security
More spatial capacity i.e. bits per second persquare metre
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What is WIMAX ?
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What is WIMAX..
(IEEE 802.16) is a metropolitan area network
technology whose goal is to one day provide last
mile broadband wireless access to the general
population.
WIMAX delivering broadband to places where it
would not
be viable to establish wired connections.
WIMAX has capability to connect to homes and
businesses within a 30 mile radius, WiMAX has
the potential to give millions of people access to
the Internet cheaply and easily. 515
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Limitations of Wireless
Communication
Privacy related issued
Device limitations
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References
1. Institue of Electrical and Electronics Engineers(http://www.ieee.org/)
2. http://www.iss.net/wireless/WLAN_FAQ.php
3. http://www.practicallynetworked.com/support/wireless_secure.htm
4. http://www.computerworld.com/mobiletopics/mobile/technology/story/0%2C10801%2C72164%2C00.html
5. http://www.practicallynetworked.com/support/wireless_secure.htm
6. COMPUTERS Information Technology in Perspective
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http://www.ieee.org/http://www.iss.net/wireless/WLAN_FAQ.phphttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.computerworld.com/mobiletopics/mobile/technology/story/0,10801,72164,00.htmlhttp://www.computerworld.com/mobiletopics/mobile/technology/story/0,10801,72164,00.htmlhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.computerworld.com/mobiletopics/mobile/technology/story/0,10801,72164,00.htmlhttp://www.computerworld.com/mobiletopics/mobile/technology/story/0,10801,72164,00.htmlhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.practicallynetworked.com/support/wireless_secure.htmhttp://www.iss.net/wireless/WLAN_FAQ.phphttp://www.ieee.org/ -
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ANY
QUERIES?????.....
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