Fourth generation (4G) mobile systems are characterized by high-speed data rates from 20 to 100 Mbps, allowing for high-resolution video and television. 4G aims to provide seamless connectivity across heterogeneous networks with high quality of service for multimedia. Key components of 4G include multi-antenna systems, software-defined radio, adaptive modulation and coding, IPv6, and a multi-tier, multi-device network architecture to deliver high speeds and network capacity exceeding 3G.

1. Likan Patra
RIGHTyaLEFT
4G

2. GOING TO TELL ABOUT…
Fourth Generation Wireless Communication.
Evolution of Wireless Standards.
Limitation.
Objectives.
Important 4G Components.
Network Architecture.

3. What is fourth generation (4G) mobile
systems?
Fourth generation mobile communications systems that are
characterized by high-speed data rates at 20 to 100 Mbps, suitable
for high-resolution movies and television, virtual . Initial
deployments are anticipated in 2006-2010.

4. INTERNET GOES TO MOBILE

5. Generations Timeline

6. FROM 1G TO 4G

7. 3G Realities/Limitations
 A recent study by Herschel Shosteck Associates noted that operators that pay
large amounts for spectrum will have to charge end users so much that
adoption of 3G will be slow.
 Another study by Strategy Analytics agreed, predicting that, while wireless data
revenues will soar, 3G networks will account for less than a quarter of that
revenue by 2010. So-called 3G killer apps such as multimedia won't succeed,
the second study said.
 Pent-up demand: Now there's the rub. Even NTT DoCoMo doesn't think
there's much pent-up demand among consumers for 3G multimedia services, so
it will target its initial 3G offering at business -- and price it accordingly.

8. OBJECTIVES OF 4G
Spectrally efficient system (8 bits/s/Hz)
High network capacity (atleast 10 times greater than 3G)
Nominal data rate at high speeds (100Mbps at stationary conditions and
20Mbps at 100miles/hr)
Smooth handoff across heterogeneous network
Seamless connectivity and global roaming across multiple networks
High quality of service for next generation multimedia support (real
time audio, high speed data, HDTV video content, mobile TV, etc)
Interoperable with the existing wireless standards
All IP system, packet switched network

9. 4G Provides Mobility & Capacity
4G

10. SERVICE DEVELOPEMENT

11. Wireless generations: User’s view

12. CONTD…

13. IMPORTANT COMPONENTS OF 4G
Multi Antenna System
Software Defined Radio
Adaptive Modulating And Coding
Access Schemes
IPv6

14. 4G: An evolvable, programmable, multi-
tier
multi-device network

15. BASIC MODEL