Wireless communication allows information sharing from anywhere using wireless technology. It has evolved from 1G to 4G systems with increasing speeds and capabilities. Wireless local area networks emerged for business use while cellular networks developed from mobile phones. 4G aims to provide integrated wireless services with speeds over 100 Mbps for multimedia, location-based apps, and more through technologies like Ultra Wideband networks and smart antennas. It will support unlimited data and a convergence of services.

1. Presented By:
shuBham jha
B.tech. iii year
comPuter science
and engineering

2. Introduction to WirelessIntroduction to Wireless
CommunicationCommunication
Our ultimate goal is to communicate with
any type of information with anyone, at
anytime, from anywhere. This is possible
with the aid of WIRELESS TECHNOLOGY.
User
Friendliness
User
Personalisation
USER
User Sensitivity

3. Types ofTypes of
Wireless CommunicationWireless Communication
Cellular Networks
Wireless Local Area Network

4. Cellular NetworksCellular Networks
Evolved from mobile telephone as voice
conversation and communication tools for
private and business uses

5. Wireless Local Area NetworkWireless Local Area Network
Emerged from computer network. It helps
business user to expand their service areas by
using LAN (faster data transport)

6. Evolution from 1g to 4g systemEvolution from 1g to 4g system
1g Wireless System :Developed in 1980s
and completed in early 1990’s
2g Wireless System :The 2G phase began
in the 1990s and much of this technology is
still in use.
3g Wireless System :It was developed in
the late 1990s until present day,Japan is the
first country having introduced 3G nationally

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9. 3G WIRELESS SYSTEM3G WIRELESS SYSTEM
Services include:
◦ Global roaming
◦ Superior voice quality and video conference
◦ Information for web surfing, music, news,
corporate intranet, transportation service etc
◦ Transmission speeds from 125kbps to 2Mbps

10. Issues on 3G wireless systemIssues on 3G wireless system
High input fees for the 3G service
licenses
Inefficient to meet needs of future high-
performance
Multiple standards for 3G
Require wider bandwidth
Lack of coverage because it is still new
service

11. 4G wireless system4G wireless system
4G technologies are sometimes referred
to by the acronym "MAGIC," which
stands for Mobile multimedia,
Anytime/any-where, Global mobility
support, Integrated wireless and
Customized personal service.

12. Current TechnologyCurrent Technology
TDMA :Time Division Multiple Access, is a
technique for dividing the time domain up into
sub channels for use by multiple devices.
CDMA :Code Division Multiple Access,
allows every device in a cell to transmit over
the entire bandwidth at all times.

13. 4G Hardware4G Hardware
Ultra Wide Band Networks :Ultra
Wideband technology, or UWB, is an
advanced transmission technology that can be
used in the implementation of a 4G network.
Smart Antennas :: Multiple “smart
antennas” can be employed to help find, tune,
and turn up signal information

14. General 4G Services and 4GGeneral 4G Services and 4G
ApplicationsApplications
Localized/Personalized Information
Organizational services
Communications services and applications
Entertainment services
Mobile commerce (M-Commerce )

15. Features of 4G Wireless SystemsFeatures of 4G Wireless Systems
Support interactive multimedia
User friendliness
High speed, high capacity and low cost per bit
Higher band widths

16. User and Industry ExpectationsUser and Industry Expectations
Wireless users can be categorized into
generalized segments :
◦ The Age segment
◦ The Internet Usage segment
◦ The Mobile Professional segment

17. Comparison between 3g and 4gComparison between 3g and 4g
Major
Requirement 3g 4g
Speed 384 Kbps to 2 Mbps 20 to 100 Mbps
Frequency Band Dependent on country Higher frequency bands (
2-8 GHz)
Bandwidth 5-20 MHz 100 MHz (or more)
Switching Design Basis
All digital with packetized
voice
Access Technologies
Circuit and Packet
W-CDMA OFDM and MC-CDMA

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Generation Overview
Technology 1G 2G 2.5G 3G 4G
First design 1970 1980 1985 1990 2000
Implementa
tion
1982 1991 1999 2002 2010?
Service Analog
voice
Digital
voice, SMS
Packaged
data
Broadband
data up to
2 mb/s
IP-oriented
unlimited
multimedia
data
Standards AMPS TDMA,
CDMA,
GSM
GPRS,
EDGE
W-CDMA,
HSOPA
WiMAX,
HSOPA
Data
bandwidth
1.9 kbps 14.4 kbps 384 kbps 2 mbps 200 mbps
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ApplicationsApplications
• E-commerce
• Business/Work
• Private Life
• Vehicular
• Public Place
• Entertainment
• Education

20. ConclusionConclusion
4G will be a Convergence Platform
providing clear advantages in terms of
Coverage, Bandwidth, Power
Consumption, variety of Services,
ranging from Pop-Up advertisements
to Location-Based services and IP
Data casting ones.

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THANK YOUTHANK YOU