Seminar          on4G wireless technology        Presented By-           Shradha         Maheshwari            CS-08
What is 4G? One of the terms used to describe 4G is MAGIC. It will provide a comprehensive IP solution wherevoice , data...
History of 4G technologyTechnology    1G               2G           3G           4GDesign began   1970           1980     ...
Why 4G is required? Due to substantial growth in overall number of  subscribers. Due to massive demand of new services l...
Features of 4G Technology Support for multimedia services like teleconferencing and  wireless internet. Wider bandwidths...
Problems with the Current          System• Cellular networks do not have available  bandwidth needed to handle data  servi...
Transmission system
Technology and hardware       used in 4G OFDM UWB Smart antennas IPv6Software defined ratio
OFDM (orthogonal frequency      division multiplexing) It is based on the concept of FDD (Frequency division multiplexing...
UWB (ultra wide band) .An advanced technology that can be used in 4G technology.    It is typically detected as noise. ...
Smart antennas• A digital wireless communication antenna system that  takes advantage of diversity effect at source,  dest...
Antenna as both transmitter       and receiver
Smart antennas can be broadly divided into two categories:• Switched beam antenna• Adaptive array antenna
Switched Beam Antenna
Adaptive Array Antenna
Software defined radio (SDR) A software defined radio is one that can be configured to any  radio or frequency standard t...
Packet Layer• Splits the data into small packets.• Without this there would be a need of separate connection  on each comp...
IPv6 The Internet Protocol (IP) is the method or protocol through  which data is sent from one computer to another on the...
IPv6 continue…… The second set of the IP address (79.23.178.229) can be  declared as the “care-of address”. The third se...
Advantages of Packets•   More secure•   More flexible•   More reliable•   Proven technology•   Easier to standardize•   Ex...
QOS (quality of service)    In wireless networks, Quality of Service (QOS) refers to the    measure of the performance fo...
An imagined view of 4G mobile phone
Barrier to progress• Nobody makes the conversion to 4G.• Everyone makes the conversion to  4G.• Some of the players make t...
Applications1. Virtual Presence2. Virtual Navigation3. Tele geo processing application4. Telemedicine and education
continue…..5. Crisis management6. Multimedia video services.7. Traffic control system8. Admission control in cellular pack...
THANK YOU
Any queries??
Upcoming SlideShare
Loading in …5
×

Shradha maheshwari 24 04-10-4g wireless technology

1,301 views
1,178 views

Published on

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,301
On SlideShare
0
From Embeds
0
Number of Embeds
6
Actions
Shares
0
Downloads
134
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Shradha maheshwari 24 04-10-4g wireless technology

  1. 1. Seminar on4G wireless technology Presented By- Shradha Maheshwari CS-08
  2. 2. What is 4G? One of the terms used to describe 4G is MAGIC. It will provide a comprehensive IP solution wherevoice , data and multimedia can be given to user on an“anytime , anywhere” basis. It includes several types of broadband wirelesscommunication system access including cellular telephone system.
  3. 3. History of 4G technologyTechnology 1G 2G 3G 4GDesign began 1970 1980 1990 2000Implementation 1984 1991 2002 2010?Services Voice Associated Global Higherprovided transmission, with GSM Roaming, capacity text message service interactive ,completely media IP oriented, multimedia.Data bandwidth 1.0Kbps 144Kbps 2Mbps 100Mbps
  4. 4. Why 4G is required? Due to substantial growth in overall number of subscribers. Due to massive demand of new services like data , audio , image or video .
  5. 5. Features of 4G Technology Support for multimedia services like teleconferencing and wireless internet. Wider bandwidths and higher bitrates. Global mobility and service portability. Support for previous wireless technologies. High internet speed. Tight network security. Better spectral efficiency.
  6. 6. Problems with the Current System• Cellular networks do not have available bandwidth needed to handle data services well.• Data transfer tends to come in bursts.
  7. 7. Transmission system
  8. 8. Technology and hardware used in 4G OFDM UWB Smart antennas IPv6Software defined ratio
  9. 9. OFDM (orthogonal frequency division multiplexing) It is based on the concept of FDD (Frequency division multiplexing). It works by splitting the radio signal into multiple smaller sub-signals By inserting a cyclic prefix between adjacent OFDM signal inter signal interference can be avoided . Here modulation can be performed by an IDFT ,which can be generated very efficiently as an IFFT . so, receiver only needs a FFT to reverse this process.
  10. 10. UWB (ultra wide band) .An advanced technology that can be used in 4G technology. It is typically detected as noise. It uses a frequency of 3.1 to 10.6 GHz. It uses less power as it transmits pulse instead of continuos signal. Special antennas are needed to tune and aim the signal.
  11. 11. Smart antennas• A digital wireless communication antenna system that takes advantage of diversity effect at source, destination or both.• They can send back signals in the same direction that they came from.• They can fall into SIMO, MIMO and MISO.
  12. 12. Antenna as both transmitter and receiver
  13. 13. Smart antennas can be broadly divided into two categories:• Switched beam antenna• Adaptive array antenna
  14. 14. Switched Beam Antenna
  15. 15. Adaptive Array Antenna
  16. 16. Software defined radio (SDR) A software defined radio is one that can be configured to any radio or frequency standard through the use of software. The phone should automatically switch from operating on a CDMA frequency to a TDMA frequency whenever it is required. It can be dynamically updated with new software without any changes in the hardware and infrastructure.
  17. 17. Packet Layer• Splits the data into small packets.• Without this there would be a need of separate connection on each computer with a separate network and routing equipment.• They follow rules how they are formatted.
  18. 18. IPv6 The Internet Protocol (IP) is the method or protocol through which data is sent from one computer to another on the internet. It includes128 bits, which is 4 times more than 32bits IP address in IPv4. Understanding of IPv6 in 4G- - 32 bits IP address looks like this 216.37.129.9 - 216.37.129.9 may be written like 11011000.00100101.10000001.00001001 - the IP address in IPv6 version will be 4 times of IPv4; it looks like 216.37.129.9,79.23.178.229,65.198.2.10,192.168.5.120 - all 4 sets are defined in different functions and usages. - the first set of the IP address (216.37.129.9) can be defined to be the “home address” purpose.
  19. 19. IPv6 continue…… The second set of the IP address (79.23.178.229) can be declared as the “care-of address”. The third set of the IP address (65.198.2.10) can be signed as mobile IP address. The last set of IP address(192.168.5.120) can be local network address.There are enough addresses for every phone to have a unique address.
  20. 20. Advantages of Packets• More secure• More flexible• More reliable• Proven technology• Easier to standardize• Extensible
  21. 21. QOS (quality of service) In wireless networks, Quality of Service (QOS) refers to the measure of the performance for a system reflecting its transmission quality and service availability. 4G is expected to have at least a reliability of 99.99%. In 4G QOS may be divided in following ways- Transaction-level QOS describes both the time it takes to complete a transaction and the packet loss rate. Circuit-level QOS includes call blocking for new as well as existing calls . User-level QOS depends on user mobility and application type .
  22. 22. An imagined view of 4G mobile phone
  23. 23. Barrier to progress• Nobody makes the conversion to 4G.• Everyone makes the conversion to 4G.• Some of the players make the conversion to 4G.
  24. 24. Applications1. Virtual Presence2. Virtual Navigation3. Tele geo processing application4. Telemedicine and education
  25. 25. continue…..5. Crisis management6. Multimedia video services.7. Traffic control system8. Admission control in cellular packet networks
  26. 26. THANK YOU
  27. 27. Any queries??

×