4g wireless communication

8,490 views

Published on

BY Ekta singh

Published in: Technology, Business
1 Comment
10 Likes
Statistics
Notes
  • guys of eiilm mast slide hai thanks....slideshare,,,
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
8,490
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
487
Comments
1
Likes
10
Embeds 0
No embeds

No notes for slide

4g wireless communication

  1. 1. Introduction to wireless communication <ul><li>Our ultimate goal to communicate with any type of information with anyone, at anytime, from anywhere .This is possible with the aid of WIRELESS TECNOLOGY </li></ul>
  2. 2. Type of wireless communication <ul><li>Cellular Networks </li></ul><ul><li>Wireless local area network </li></ul>
  3. 3. Cellular Networks <ul><li>Evolved from mobile telephone as voice conversation and communication tools for private and business uses </li></ul>
  4. 4. Wireless Local Area Network <ul><li>Emerged from computer network. It helps business user to expand their service areas by using LAN </li></ul>
  5. 5. Evolution from1G to 4G system <ul><li>1G wireless system: Developed in 1980s and completed in early 1990s </li></ul><ul><li>2G wireless system: The 2G phase began in the 1990s and much of this technology is still in use. </li></ul><ul><li>3G wireless system: It was developed in the late 1990s until present day, Japan is the first country having introduced 3G nationally </li></ul>
  6. 6. Speeds reach up to 40 Mbps. Enhanced multimedia, streaming video, access and portability are increased still further. Devices are equipped for world-wide roaming. 2006+ 4G Enhanced multimedia and streaming video capabilities are increased. Standards are created to allow universal access and portability across different device types (Telephones, PDA's, etc.) 2004-2005 3G The Internet turns the focus towards data transmission. Enhanced multimedia and streaming video are now possible. Phones support limited web browsing. 2001-2004 2.5G Increased performance achieved by allowing multiple users on a single channel. More and more cellular phones are used for data as well as voice. 90's to 2000 2G Wireless phones (cellular) are introduced, primarily for voice only. 70's to 80's 1G Cool New Features Dates Speeds reach up to 40 Mbps. Enhanced multimedia, streaming video, access and portability are increased still further. Devices are equipped for world-wide roaming. 2006+ 4G Enhanced multimedia and streaming video capabilities are increased. Standards are created to allow universal access and portability across different device types (Telephones, PDA's, etc.) 2004-2005 3G The Internet turns the focus towards data transmission. Enhanced multimedia and streaming video are now possible. Phones support limited web browsing. 2001-2004 2.5G Increased performance achieved by allowing multiple users on a single channel. More and more cellular phones are used for data as well as voice . 90's to 2000 2G Wireless phones (cellular) are introduced, primarily for voice only. 70's to 80's 1G Cool New Features Dates
  7. 7. 3G Wireless system <ul><li>Services include: </li></ul><ul><li>- Global roaming </li></ul><ul><li>- superior voice quality and video conference </li></ul><ul><li>- Information for web surfing ,music, news, corporate intranet, transportation service etc. </li></ul><ul><li>- Transmission speeds from 125kbs to 2Mbps </li></ul>
  8. 8. Issues on 3G wireless system <ul><li>High input fees for the 3G service licenses inefficient to meet needs of future high performance </li></ul><ul><li>Multiple standards for 3G </li></ul><ul><li>Required wider bandwidth </li></ul><ul><li>Lack of coverage because it is still a new service </li></ul>
  9. 9. 4G wireless system <ul><li>4G technologies are sometimes referred to the acronym “MAGIC” which stand for mobile multimedia, Anytime/any-where, Global mobility support integrated wireless and customized personal service </li></ul>
  10. 10. Current Technology <ul><li>TDMA : Time division multiple access, is a technique for dividing the time domain up into sub channels for use by multiple devices </li></ul><ul><li>CDMA : code division multiple access, allows every device in a cell to transmit over the entire bandwidth at all times. </li></ul>
  11. 11. 4G Hardware <ul><li>Ultra Wide Band Networks : ultra wideband technology ,or UWB, is a advance technology that can be used in the implementation of 4G network. </li></ul><ul><li>Smart antennas : Multiple “smart antennas” can be employed to help find, tune, and turn up signal information. </li></ul>
  12. 12. General 4G services and 4G Applications <ul><li>Localized/ personalized information </li></ul><ul><li>Organizational services </li></ul><ul><li>Communications services and applications </li></ul><ul><li>Entertainment services </li></ul><ul><li>Mobile commerce (M-Commerce) </li></ul>
  13. 13. Features of 4G wireless systems <ul><li>Support interactive multimedia </li></ul><ul><li>User friendliness </li></ul><ul><li>High speed, high capacity and low cost per bit </li></ul><ul><li>Higher band widths </li></ul><ul><li>Terminal Heterogeneity </li></ul><ul><li>Network Heterogeneity </li></ul>
  14. 14. User and Industry Expectations <ul><li>Wireless users can be categorized into generalized segments: </li></ul><ul><li>-The age segment </li></ul><ul><li>-The internet usage segment </li></ul><ul><li>-The mobile Professional segment </li></ul>
  15. 15. Comparison Between 3G and 4G OFDM and MC-CDMA W-CDMA Access technologies All digital with pocketsize voice Circuit and packet Switching Design Basis 100MHz (or more) 5-20 MHz Bandwidth Higher frequency band(2-8 GHz) Dependent on country Frequency Band 20 to 100 Mbps 384 kbps to 2Mbps speed 4G 3G Major requirement
  16. 16. Conclusion <ul><li>4g will be a convergence platform providing clear advantages in term of coverage, Bandwidth, Power consumption, variety of services ranging from pop-Up advertisements to a location base services and IP Data casting ones. </li></ul>
  17. 17. Thanks

×