This document provides an overview of wireless technology. It discusses how wireless uses electromagnetic waves for communication and divides wireless into fixed, mobile, portable, and infrared types. Common examples of wireless technology are listed as cellular phones, pagers, cordless peripherals, and GPS. The document then covers the history and development of wireless technology and compares wired vs wireless networks in terms of speed, installation, reliability, mobility, and cost. It describes how wireless networks operate using cells and base stations. Finally, advantages, disadvantages, and applications of wireless technology are summarized.
The 21st century is all about technology........
Everything's going wireless let's check the latest trends out......
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The 21st century is all about technology........
Everything's going wireless let's check the latest trends out......
for more details about the presentation contact
anishrajgoyal09rockstar@gmail.com
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2. INTRODUCTION
Wireless is a term used to describe communications in which
electromagnetic waves are used for communication purpose.
The first wireless transmitters went on the air in the early 20th
century using radiotelegraphy.
As modulation made it
possible to transmit voices
and music via wireless.
3. WIRELESS CAN BE DIVIDED INTO
Fixed Wireless
1.Mobile wireless
2.Portable wireless
IR Wireless
1.IR (infrared) radiation
4. COMMON EXAMPLES OF WIRELESS
1.Cellular phones and pagers
2.Cordless computer peripherals
3.Global Positioning System (GPS)
5. HISTORY
The theory of electromagnetic waves by
Heinrich Hertz in 1888
Theory of electromagnetic waves were predicted from the
research of James Clerk Maxwell
Hertz demonstrated that
electromagnetic waves
were able to be received
by an experimental apparatus.
6. WIRED VS WIRELESS TECHNOLOGY
Wireless networking has predominantly become more popular
over the past few years, with advancements in technology.
While wireless certainly offer flexibility and convenience
there are also many other important factors to consider when
using them in place of wired networks.
SPEED
The networking of the wired networks are more faster as
compared to other types of wireless networking devices
because they are able to provide the speed of more then 1000
Mbps.
7. INSTALLATION
Wired, Ethernet cable must be on each computer to another
computer or a central device. This often causes complications
because of the length of cable required and necessary
arrangements to wire the room neat.
Wireless, can be configured in 2 ways
(i) Ad hoc networks
(ii) Infrastructure mode
(iii)Both ad hoc and infrastructure
Network adapter called WLAN cards.
mode needs a
8. RELIABILITY
Due to there being no physical medium, data has to transfer through
the air and must pass through any surface in its path.
This means that signals can get blocked and deflected and this means
your connection can suffer or even drop.
Wired network fails very rarely and provide good speed and
performance
MOBILITY
In wired technology it cannot provide mobile network.
Difficult to lay down the cables and it looks very messy when install
outside.
In wireless technology it is not very much reliable only best for
mobile devices such as Laptops
Not faster as compared to wired devices
9. CONTI…
COST
In wired technology we need many expenses to setup the
wired network.
As compared to other wired devices it is easy to setup the
wireless networking devices at the very low and at the reliable
cost.
10. HOW WIRELESS TECHNOLOGY WORKS
Inside the wireless phone, there is a compact speaker, a
microphone, a keyboard, a display screen, and a power-
full circuit board with microprocessors that make each
phone a miniature computer.
When connected to a wireless network, this bundle of
technologies allows people to make phone calls or
exchange data with other phones and computers around
the world.
Wireless networks operate on a grid that divides cities or
regions into smaller cells.
11. CONTI….
With wireless data services, one can receive faxes, browse
the Internet, sends and receives emails or play video
games, all on the wireless phone.
Every cell uses a set of radio frequencies or channels to
provide service in its specific area.
There is a base station consisting of a wireless antenna
and other radio equipment.
When one turn on wireless phone, it searches for a signal
to confirm that service is available. Then the phone
transmits certain identification numbers, so the network
can verify the customer information—such as the wireless
provider and phone number.
13. INTRODUCTION:
Wireless Technology is an alternative to
Wired Technology, which is commonly
used, for connecting devices in wireless
mode.
Wi-Fi (Wireless Fidelity) is a generic term that refers to the IEEE
802.11 communications standard for Wireless Local Area Networks
(WLANs).
Wi-Fi Network connect computers to each other, to the internet
and to the wired network.
14. How Wi-Fi Works?
Basic concept is same as Walkie talkies.
A Wi-Fi hotspot is created by installing an access point
to an internet connection.
When Wi-Fi enabled device encounters a hotspot the
device can then connect to that network wirelessly.
Many access points can be connected to each other via
Ethernet cables to create a single large network.
15. Bluetooth is a wireless technology for transferring data
between two devices that are in close proximity with each
other.
When you click on an icon for a device and you are linked to
it, automatically and transparently.
17. ADVANTAGES OF WIRELESS TECHNOLOGY
Easy to use.
Avoid use of cables.
Offers productivity, convenience and cost advantages over
traditional wired technology.
Completes the access technology portfolios.
Goes where cable cannot
18. Involves reduced time to revenue.
Provides broadband access
extension.
Greater flexibility and mobility for users.
CONTI…
.
19. DISADVANTAGES OF WIRELESS TECHNOLOGY
Shorter range than wired connections.
More prone to interferences.
Several wireless networks can interfere with each other.
More Expensive.
Wireless reception varies from area to area, even within your own
apartment. It's not always guaranteed that you'll have a
connection to the Internet
20. APPLICATIONS OF WIRELESS TECHNOLOGY
Remote Control:-
There are many types of wireless technology remote
controllers. The remote control sends a different flashing light message.
Item Tracking:-
Items can be track easily, accurately and cheaply by attaching
wireless Radio Frequency Identification (RFID) tags to them.
Navigation And Location:-
The Global Positioning System (GPS) is a space-based
Global Navigation Satellite System (GNSS) that provides location and
time information.
21. CONTI….
Wireless Power Transfer:-
Wireless transmission is useful in cases where
interconnecting wires are inconvenient, hazardous, or impossible.
Remote Monitoring:-
Monitoring patients heartbeat , blood pressure, air
temperature, security , building for signs of fire ,etc.
22. CONTI….
Risk Management
Monitoring river water level,
firefighters in a burning building ,
waterways, bridges for overloading
sea level, signs of
toxic substance in
23. CONCLUSION
Use of Wireless technology is rapidly increasing an playing an
important role in life of people throughout the world.
Majority number of people are relying on the technology
directly or indirectly.
The use of wireless technology may prove to be a very useful
means of saving the lives of many in developing countries.
The wireless has already been useful in the saving of many lives
in the world. Its future development can prove to be more
beneficial.