4G MOBILE COMMUNICATION SYSTEM

4G MOBILE COMMUNICATION SYSTEM

OVERVIEW

o What is 4G ?o Evolution of Mobile technologyo Features o 4G hardware and softwareo Technologieso Applicationso Advantages and Disadvantageso Conclusion

o 1G-First Generation • Introduced in 1980s• Encompassed with analog standards• Voice

o 2G-Second Generation • Introduced in 1990s• Standards – GSM ,iDEN, PDC,CDMA

• Voice mail ,SMS ,MMS , internet

EVOLUTION OF MOBILE TECHNOLOGY:

o 3G-Third Generation • Development started in late

1990s

• Standards- W-CDMA, EVDO

• Wireless Internet , Video Calling, Mobile TV

WHAT IS 4G?

o Fourth Generation of Cellular Communications .

o Beyond 3G .

o Data transfer rate up to 100 Mbps for high mobility and 1 Gbps for low mobility .

oCollection of technologies and protocols

FEATURES OF 4Go IP (Internet

Protocol) based mobile systems.

o Entirely packet-switched networks.

o Digital in nature o Wider Bandwidths

100Mhz

o 10 times faster than current 3Go Global mobility and service

portability.o User Friendly.

4G ANYTIME,ANYWHERE CONNECTION One of the term used to describe the 4G

MAGIC Mobile Multimedia Anytime Anywhere Global Mobility support Integrated wireless solution Customized personal service.

4G Hardware :

oUltra Wide Band Networks oSmart Antennas

4G Software :

oSoftware Defined RadiooPacket Layers oPackets

Ultra wide band Networks It can use any part of the frequency spectrum, which

means that it can use frequencies that are currently in use by other radio frequency devices .

It uses a frequency of 3.1 to 10.6 Hz.It uses less power , since it transmits pulse instead of

continuous signal. An advanced technology that can be used in 4G

technology.Special antennas are needed to tune and aim the signal.

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.

Roaming can be an issue with different standards, but with a software defined radio, users can just download the interface upon entering new territory, or the software could just download automatically

Technology Standards :

• WiMAX ,LTE

• The advantages of LTE are:

(i) 100 Mbps - download & 50 Mbps – upload

(ii) It offers both FDD and TDD duplexing(iii) Uses OFDM

WIMAX:o World Interoperability for

Microwave Accesso WiMax technology might not achieve

the required rate in a high-density area .

o useful when it is bundled with IPTV.

o The wireless bandwidth will be roughly 3Mbps/1.5Mbps

LTE(Long Term Evolution) LTE stands for Long Term Evolution

Next Generation mobile broadband technology

Promises data transfer rates of 100 Mbps

Based on UMTS 3G technology

Optimized for All-IP traffic

OFDM :• OFDM stands for

Orthogonal Frequency Division Multiplexing.

• It distributes the data over a large number of carriers that are spaced apart at precise frequencies.

Applications :• Virtual Presence

• Virtual Navigation

• Crisis Management Application

• Telegeoprocessing, telemedicine

• Security

ADVANTAGES OF 4G:• High usability: anytime, anywhere, and

with any technology.

• Support for multimedia services at low transmission cost. • Higher bandwidth, tight network security.

DISADVANTAGES OF 4G :

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

CONCLUSION Delivers true speeds without wires.

Faster -- more bandwidth

Completely portable

3 times faster than 3G

4G is broadband technology that will give us richer ,pleasurable internet experience

Thank you