4G is a conceptual framework proposed in 2002 that aims to provide broadband Internet access to mobile devices at speeds up to 1Gbps. It utilizes an all-IP network architecture and aims to support multimedia services while providing global roaming capability. Key technologies that enable 4G networks include OFDM, smart antennas, and all-IP network infrastructure. 4G aims to support applications like interactive mobile media and telecommunication with high speed, high capacity, and low cost per bit globally.

1. **Presented by**
AKASH KUMAR BEHERA
BRANCH---ECE
REGD---1201298286

2. Index:--
 Introduction.
 History.
 About 4G.
 Features.
 Wireless Technologies Used in 4G.
 Applications.
 Advantage & Disadvantages.
 Conclusion.
 Reference.

3.  The first generation, 1G wireless mobile
communication systems, was introduced in the early
1980s. 1G wireless was analog and supported the
first generation of analog cell phones with the
speeds up to 2.4kbps.
 The second generation, 2G system, fielded in the
late 1980s.It was planned mainly for voice
transmission with digital signal and the speeds up to
64kbps.
 The third generation, 3G wireless system, also
called UMTS (Universal Mobile Telecommunications
Standard), was developed in the late 1990s .3G is
not only provided the transmission speeds from
125kbps to 2Mbps, but also included many
services, such as global roaming, superior voice and

4.  To vanish the disadvantages of 3G, 4G came to the
communication world.
 The fourth generation, 4G is a conceptual
framework just raised in 2002. The speeds of 4G
can theoretically be promised up to 1Gbps. The
beyond will be 5G with incredible transmission
speed with no limitation for access and zone size.

5.  The process began with the designs in the 1970s that
have become known as 1G. The earliest systems
were implemented based on analog technology.
 The 2G (second generation) systems designed in the
1980s were still used mainly for voice applications but
were based on digital technology, including digital
signal processing techniques.
 The 2.5G it is basically an enhancement of the two
major 2G technologies to provide increased capacity
on the 2G RF (radio frequency) channels and to
introduce higher throughput for data service.

6. COMPARING KEY PARAMETERS OF 4G WITH 3G
3G 4G
Major Requirement Driving
Architecture
Predominantly voice driven-
data was always add on
Converged data and voice over
IP
Network architecture Wide area cell based Hybrid –integration of wireless
LAN and wide area
Speed 384 Kbps to 2 Mbps 20 to 100 Mbps in mobile mode
Frequency Band 1800-2400 MHz Higher frequency bands (2-8
GHz)
Switching Design Basis Circuit and Packet All digital with packetized
voice
Access Technologies W-CDMA, OFDM and MC-CDMA (Multi
Carrier CDMA)
Component Design Optimized antenna design,
multi-band adapters
Smarter Antennas, software
multilane and wideband radios
IP A number of air link
protocols, including IP 5.0
All IP (IP6.0)

7.  The 4G systems will interoperate with 2G and 3G
systems.
 4G systems will be fully IP‐based wireless Internet.
 Data transfer rate up to 100 Mbps for high mobility
and 1G bps for low mobility .
 Global mobility and service portability.
 Entirely packet-switched networks.
 Digital in nature .
 Wider Bandwidths 100Mhz.

8. 3d goggle phone Nokia’s wristband phone
Smart Mobile phones

9.  Support for interactive multimedia, voice, streaming
video, Internet, and other Broad band services.
 IP based mobile system.
 High speed, high capacity, and low cost‐per‐bit
 Global access, service portability and scalable
mobile services.
 Seamless switching, and a variety of Quality of
Service‐driven services.
 Better scheduling and call‐admission‐control
techniques.
 Better spectral efficiency.

10. A. OFDM (ORTHOGONAL FREQUENCY DIVISION
MULTEPLEXING).
B. UWB (ULTRA WIDE BAND).
C. MILLIMETER WIRELESS.
D. SMART ANTENNAS.
E. LONG TERM POWER PREDICTION.
F. SCHEDULING AMONG USERS.
G. ADAPTIVE MODULATION AND POWER
CONTROL.

11. • Telecommunication.
• 4G Car.
• 4G and public safety.
• Sensors in public vehicle.
• Cameras in traffic light.
• First responder route selection.
• Traffic control during disasters.

12.  Support for interactive multimedia, voice, streaming video,
Internet, and other broadband services.
 IP based mobile system.
 High speed, high capacity, and low cost-per-bit.
 Global access, service portability, and scalable mobile services
Seamless switching, and a variety of Quality of Service-driven
services.
 Better scheduling and call-admission-control techniques.
 Ad-hoc and multi-hop networks .
 Better spectral efficiency.
 Seamless network of multiple protocols and air interfaces.

13.  Expensive.
 Battery uses are more.
 Hard to implement.
 Need complicated hardware.

14.  All totally the best way to help all users is to use 4G as
the next wireless system and in totally it is safety and
secure for public, this the need that demands the
solution.
 It will be implemented in the coming years which are a
miracle in the field of communication engineering
technology.
 Today’s wired society is going wireless and if it has
problem, 4G is answer.