Group Members: Abhishek Vishwanathan(01)
Juhi Belani(06)
Rajasi Desai(17)
Introduction
 Mobile networks have evolved tremendously in last 3
decades.
 Cellular concept was introduced with 1G network.
 Today,...
The Speed
of 4G is
much
greater
than that of
all the
previous
generations
 4G is a secure integrated system which will be capable to
provide 100 Mbps data speed for high mobility devices
such as ...
Background
 The onset of wireless communication was marked
during the Second World War in 1940s for shore-to-
ship communication usi...
 New generations have appeared about every ten years
since the first move from 1980 analog (1G) to digital
(2G) transmiss...
TECHNOLOGY
* Multiplexing and access schemes:
 Code, time, and frequency are generally the basis for
multiplexing any spectrum effic...
 But the theoretical drawback; that a CDMA network
setup does not inherently reject new clients when it
approaches its li...
FDMA
OFDM
 In OFDM, every portion of input data is transmitted
on one of available subcarriers. In this view, OFDM
seems very ...
OFDMA
 OFDMA is a multiple user version of OFDM.
 This allows simultaneous data transmission from
several users.
 OFDMA is a
combination of
frequency domain
and time domain
multiple access,
 Slots are assigned
along the time
domain a...
*IP SUPPORT
 The predecessor of 4g worked on two parallel
infrastructures, packet switched and circuit switched
network n...
*INTELLIGENT ANTENNA
 The advanced 4g technology requires advanced
antenna systems.
 MIMO technology, a branch of Intell...
 The terms ‘input’ and ‘output’
here refer to the channel
carrying the signal and not the
devices having antennas.
 It u...
3G in India: Late entry quick exit
 India was almost a decade late in adopting the 3g
communication technology on a massi...
 However that is not the case expected with the set in of
4g communication technology. Indian telecom
minister, Kapil Sib...
Reasons for delay in 3G launch
 As compared to 2g, which require a bandwidth of 30-
200KHz, 3g telecom service required m...
 Long term evolution (LTE)
technology, or 4G, allows more data
to be transferred over the same
bandwidth used by 3G but a...
Impact of 4G on India
A. Government Organization
With the use of 4G technology the performance of the
organization will im...
B. Educational Institutions
 a) Wider spectrum of use,
quickly tracking student
and teacher performance
 b) Evaluation o...
C. Electronics Industry
 a) An escalation in demand for new products
 b) New enterprises will emerge
 c) Competition wi...
D. Telecommunication Sector
 a) New markets emerge with new demand for
technology
 b) New market strategies will be requ...
E. Citizens & Private Organizations
 a) Can watch videos
with HD quality
 b) High quality video
calls
 c) Many more bus...
F. Banking services industries
 a) Mobile banking will be efficient and secure than
before
 b) Virtual draft and cheque ...
G. Healthcare
 a) Online diagnosis
becomes possible
 b) Specialist Doctors
can be consulted
online
 c) Emergency
situat...
THANK YOU
4 g (2)
4 g (2)
4 g (2)
Upcoming SlideShare
Loading in …5
×

4 g (2)

437 views

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
437
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
12
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

4 g (2)

  1. 1. Group Members: Abhishek Vishwanathan(01) Juhi Belani(06) Rajasi Desai(17)
  2. 2. Introduction
  3. 3.  Mobile networks have evolved tremendously in last 3 decades.  Cellular concept was introduced with 1G network.  Today, 4G technology is getting ready to storm the markets.  4G or the 4th generation communication technology is the successor of 3g technology.  The principal change brought about by this advancement is in the data speed which has been increased tremendously.
  4. 4. The Speed of 4G is much greater than that of all the previous generations
  5. 5.  4G is a secure integrated system which will be capable to provide 100 Mbps data speed for high mobility devices such as cell phones and 1 Gbps for low mobility devices such as desktops.  These specifications were provided by the ITU-R organization under the IMT-A (International Mobile Telecommunications – Advanced) requirements.  4G is being developed to accommodate the quality of service (QoS) and rate requirements set by further development of existing 3G applications like mobile broadband access, Multimedia Messaging Service (MMS), video chat, mobile TV, and also new services like HDTV.
  6. 6. Background
  7. 7.  The onset of wireless communication was marked during the Second World War in 1940s for shore-to- ship communication using radio telephony links.  However the 1st generation cellular networks were set up around 1977.  The nomenclature of the generations generally refers to a change in the fundamental nature of the service, non-backwards compatible transmission technology, higher spectral bandwidth and new frequency bands.
  8. 8.  New generations have appeared about every ten years since the first move from 1980 analog (1G) to digital (2G) transmission in 1992.  This was followed, in 2001, by 3G multi-media support, spread spectrum transmission and at least 200 kbit/s, and it is expected to be followed by 4G in 2012, which refers to all-IP packet-switched networks, mobile ultra-broadband (gigabit speed) access and multi- carrier transmission.
  9. 9. TECHNOLOGY
  10. 10. * Multiplexing and access schemes:  Code, time, and frequency are generally the basis for multiplexing any spectrum efficiently.  The first generation wireless standards used TDMA and FDMA.  In the wireless channels, TDMA proved to be less efficient in handling the high data rate channels. So the succeeding generations (2g and 3g) used CDMA technique
  11. 11.  But the theoretical drawback; that a CDMA network setup does not inherently reject new clients when it approaches its limits, resulting in a denial of service to all clients when the network overloads; placed a soft limit on it.  Multiplexing scheme employed by 4g technology is OFDMA (Orthogonal Frequency Division Multiple Access multiplexing).
  12. 12. FDMA
  13. 13. OFDM  In OFDM, every portion of input data is transmitted on one of available subcarriers. In this view, OFDM seems very similar to traditional FDM systems.  However, contrary to FDM, the spectrum of OFDM subcarriers can interfere to each other. Therefore, there is no need for wide guard bands to provide reliability, as was in FDM.  To ensure restoration of transmitted symbols at the receiver, the sub carrier frequencies should be orthogonal to each other.
  14. 14. OFDMA  OFDMA is a multiple user version of OFDM.  This allows simultaneous data transmission from several users.
  15. 15.  OFDMA is a combination of frequency domain and time domain multiple access,  Slots are assigned along the time domain as well as OFDM sub-carrier index.
  16. 16. *IP SUPPORT  The predecessor of 4g worked on two parallel infrastructures, packet switched and circuit switched network nodes and supported IPv4.  By the time that 4G was deployed, the process of IPv4 address exhaustion was expected to be in its final stages.  The newly emerged technology will be based on packet switched only and support IPv6.
  17. 17. *INTELLIGENT ANTENNA  The advanced 4g technology requires advanced antenna systems.  MIMO technology, a branch of Intelligent Antenna systems, is employed by 4g.  Wherein multiple antennas are used at both the transmitter and receiver end- Thus the name Multiple Input Multiple output (MIMO).
  18. 18.  The terms ‘input’ and ‘output’ here refer to the channel carrying the signal and not the devices having antennas.  It uses the spatial multiplexing technique for 4g transmission, in which, a high rate signal is split into multiple lower rate streams and each stream is transmitted from a different transmit antenna in the same frequency channel.  At the receiver side if these signals appear with different spatial signatures (direction of arrival), they are separated into parallel channels.
  19. 19. 3G in India: Late entry quick exit  India was almost a decade late in adopting the 3g communication technology on a massive scale.  With its global launch in 2001, 3g technology was seen in India only in December 2008, provided by government owned MTNL and a little later by BSNL (also government based).  The 3g spectrum auction, for private sectors, took place in India on 9 april,2010.  And launch of 3g by private sectors was as late as 2010.
  20. 20.  However that is not the case expected with the set in of 4g communication technology. Indian telecom minister, Kapil Sibal, expects 4g to hit Indian network by later half of 2013.
  21. 21. Reasons for delay in 3G launch  As compared to 2g, which require a bandwidth of 30- 200KHz, 3g telecom service required much higher frequency range, about 15-20 MHz.  This increased the bandwidth requirements manifold. Thus it required the network providers to acquire new licenses for the frequency spectrum, which in turn increased the cost of transmission.  A high tariff for using 3g data services was a prime reason why 3g failed to become popular among the masses.
  22. 22.  Long term evolution (LTE) technology, or 4G, allows more data to be transferred over the same bandwidth used by 3G but at higher speeds.  Compared with a speed of 3 megabits per second (Mbps)Offered by third- generation services, LTE can offer speeds up to 10Mbps.  As a result, service providers should be able to get more data transfer out of their network and possibly lower the cost to run their networks.
  23. 23. Impact of 4G on India A. Government Organization With the use of 4G technology the performance of the organization will improve by  a) Reducing cost of travel  b) Instant access to monitor performance of any  employee  c) Instant update on all government projects  implemented and work in progress  d) Increased revenues by auctioning spectrum
  24. 24. B. Educational Institutions  a) Wider spectrum of use, quickly tracking student and teacher performance  b) Evaluation of practices followed in education system  c) Video conferencing with other schools/colleges  d) Online guest lectures  e) Infrastructure tracking  f) Online tutoring
  25. 25. C. Electronics Industry  a) An escalation in demand for new products  b) New enterprises will emerge  c) Competition will increase
  26. 26. D. Telecommunication Sector  a) New markets emerge with new demand for technology  b) New market strategies will be required
  27. 27. E. Citizens & Private Organizations  a) Can watch videos with HD quality  b) High quality video calls  c) Many more business trips can be avoided  d) High quality video conferencing  e) Can track each and every move of an employee
  28. 28. F. Banking services industries  a) Mobile banking will be efficient and secure than before  b) Virtual draft and cheque may exists in future
  29. 29. G. Healthcare  a) Online diagnosis becomes possible  b) Specialist Doctors can be consulted online  c) Emergency situations can be handled very efficiently
  30. 30. THANK YOU

×