4G MOBILE COMMUNICATION BY SAIKIRAN PANJALA

1. NAME:---------
HTNO:12HHHHHHH
4G MOBILE COMMUNICATION
GUIDE:----------

2. Abstract
 The approaching 4G (fourth generation) mobile communication systems are
projected to solve still-remaining problems of 3G (third generation) systems
and to provide a wide variety of new services, from high-quality voice to high-
definition video to high-data-rate wireless channels. The term 4G is used
broadly to include several types of broadband wireless access communication
systems, not only cellular telephone systems. One of the terms used to describe
4G is MAGIC—Mobile multimedia, anytime anywhere, Global mobility
support, integrated wireless solution, and customized personal service. As a
promise for the future, 4G systems, that is, cellular broadband wireless access
systems have been attracting much interest in the mobile communication
arena.

3. Introduction
 4G the succesor of 3G will be soon become the standard for cellular
wireless
 This technology is presently implemented only in some countries & still it is
being perfected
 The aim of 4G technology is to achieve “ULTRA BROADBAND SPEED”

4. What is 4G..?
 4G is the name given to the fourth generation technology
 G for generation

5. DIFFERENT GENERATION
 1G (first generation)
 2G(second generation)
 3G(third generation)
 4G(fourth generation)

6. 1G (FIRST GENERATION)
 1G or ‘FIRST GENERATION’ was an analog system
 Continues in amplitude & time
 Variation in signal-disputes over long distances
 It is developed in seventies
 Simplest type of wireless data
 Average between 4,800 to 9,600 bps(bits per second)

7. Problems of 1G
 Poor voice quality
 Poor battery life
 Phone big size
 No security
 Frequent call drops
 Limited capacity
 Poor hand off realiability

9. 2G(SECOND GENERATION)
 2G mobile uses GSM(GLOBAL SYSTEM FOR MOBILE
COMMUNICATION)
 First used in 1990’s in Europe
 GSM provides voice & limited data servicse and uses digital modulation for
improving audio quality
 2G cellular system includes
 GSM
DIGTAL AMPS
Code division multiple access(CDMA)
Personal digital communication (PDC)
Multi digital system

10. 2G digital technologies can be divided into two standards
 TDMA(Time Division Multiple Access)
-GSM: Originally from Europe but used worldwide
-iDEN: Proprietory network used by Nextel in the US
-PDC: Used exclusively in Japan.
 CDMA(Code Division Multiple access)
-IS-95: Commonly refferred to as CDMA and used in the American and
parts of Asia

11. Problems of 2G
 Need to improve transmission quality.
 Spotty coverage.
 Unable to support complex data such as video.
 System capacity.
 Cell towers had a limited coverage area.
 Jagged decay cover.

12. 3G Third Generation

13. 3G(Third Generation)
 3G networks provided the ability to transfer voice data and non-voice data.(music
downloads, emails, and instant messaging)over the same network simultaneously.
 3G networks deliver broadcast capacity and support greater numbers of voice and
data customers at lower incremental costs than 2G.
 The idea behind is to have a single network standard instead of the different
typed adopted in US Europe and Asia.
 Large capacity and broadband capabilities.

14. • Allows the transmission of 384kbps for mobile system and up to 2mbps.
• Increased spectrum efficiency-5Mhz.
• A greater number of users that can be simultaneously supported by a radio
frequency bandwidht.
• High data raster at lower incremental cost than 2G-Global roaming.

15. Problems of 3G
 High bandwidth requirement.
 High spectrum licensing fees.
 Huge capital.

16. 4G(fourth generation)
 4G,the successor of 3G.
 4G Technology or mobile communications systems that are characterized by
high-speed data rates at 20-100Mbps, suitable for high resolution movies and
television ,virtual initial deployments are anticipated in 2006-2010.

18.  Higher bandwidth enables a range of new applications!!
 Lower cost and previous generations.
 Faster and reliable.
-100Mb/s (802.11g Wire less=54Mb/s,3G=2Mb/s)

19. Why-4G
 Video streaming
 TV broadcast
 Video calls
 Video clips
 News
 Music
 Sports enhanced gaming
 Location services

20. Why-4G
 4G also known as a mobile broadband everywhere
MAGIC
‘M’obile multimedia connection
‘A’nywhere anytime with anyone
‘G’lobal mobility support
‘I’ntegrated wireless solutions
‘C’ustomized personal services

21. Conclusion
 As the history of mobile communications shows, attempts have been made to reduce a
number of technologies to a single global standard.
 Projected 4G systems offer this promise of a standard that can be embraced worldwide
through its key concept of integration.
 Future wireless networks will need to support diverse IP multimedia applications to
allow sharing of resources among multiple users. There must be a low complexity of
implementation and an efficient means of negotiation between the end users and the
wireless infrastructure.

22. Thank You