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Wireless Communicatio N: Ojas Maheshwari Ec B Iitm

Wireless communication technologies allow for connectivity without physical connections like cables. They include radio waves, microwaves, WiFi, infrared, and cellular networks. Wireless is useful when cabling is impractical. Common applications discussed are WiFi for local wireless networks, cellular services for mobile connectivity through several generations of technology, Bluetooth for short-range connections, GPS for location services, and mobile broadband modems for Internet access on laptops and devices. The document also includes a graph comparing the transmission ranges of different wireless technologies.

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103 views11 pages

Wireless Communicatio N: Ojas Maheshwari Ec B Iitm

Wireless communication technologies allow for connectivity without physical connections like cables. They include radio waves, microwaves, WiFi, infrared, and cellular networks. Wireless is useful when cabling is impractical. Common applications discussed are WiFi for local wireless networks, cellular services for mobile connectivity through several generations of technology, Bluetooth for short-range connections, GPS for location services, and mobile broadband modems for Internet access on laptops and devices. The document also includes a graph comparing the transmission ranges of different wireless technologies.

Uploaded by

OjasMaheshwari
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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WIRELESS

COMMUNICATIO
N

OJAS MAHESHWARI
EC B IITM

Outline

Introduction
Wireless

network
Modes of W communication
Apllications
(a)WIFI
(b)Cellular services
(c) range comparision by graph
(d) Bluetooth
(e)GPS
(f)Mobile modem

Introduction

Why we Use Wireless


network??

To overcome situations where


normal cabling is difficult or
financially impractical

To remotely connect mobile users


or networks.

Modes Of Wireless
communication

Radio Communication,
Microwave communication, for
example long-range line-of-sight
via highly directional antennas
Wi-Fi technology.
Infrared(IR) for example
consumer IR devices such as
remote controls.

#Applications of wireless
technology#

Wi-Fi isWIFI
a wireless
Local area network
or WirelessLAN
that enables portable computing devices
to connect easily to the Internet, Wi-fi
approaches speeds of some types of
wired Lan. Wi-Fi has access in private
homes, within offices, and at public
hotspots .Some businesses charge
customers a monthly fee for service,
while others have begun offering it for
free in an effort to increase the sales of
their goods.

Cellular services
Cellular is the fastest growing sector of
communication
industry (exponential growth since 1982, with
over 2 billion users worldwide today)

Three generations of wireless

First Generation (1G): Analog 25 or 30 KHz FM, voice


only, mostly vehicular communication
Second Generation (2G): low bit-rate data, portable
units.
2.5G increased data transmission capabilities
Third Generation (3G): high bit-rate data, video
calling support.

Gps
The Global Positioning System (GPS) is a space-based satellite
navigation system that provides location and time information
in all weather conditions, anywhere on or near the Earth where
there is an unobstructed line of sight to four or more GPS
satellites.The system provides critical capabilities to military,
civil and commercial users around the world. It is maintained by
the United States government and is freely accessible to
anyone with a GPS receiver.
The GPS project was developed in 1973 to overcome the
limitations of previous navigation systems

MOBILE BROADBAND MODEM

A mobile broadband modem, also known as a connect card


or data card, is a type of modem that allows a laptop, a
personal computer or a router to receive Internet access
via a mobile broadband connection instead of using
telephone or cable television lines. A mobile Internet user
can connect using a wireless modem to a wireless Internet
Service Provider(ISP) to get Internet access.
Standalone mobile broadband modems are designed to be
connected directly to one computer. In the past, they used
the Compact Flash standards to connect to the computer.
These standards have become deprecated by the end of
the 2000s in favour of USB-based modems, which are
compatible with a greater number of devices. Some models
have a built-in GPS chip, while others do not. router

Wireless Systems: Range Comparison


1 m 10 m

100 m

Blueooth

1 Km

WLANs

10 Km

100 Km

Mobile
MW
FM
Telephony Radio Radio

1,000 Km

Satellite
Links

The END
Thank you

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