Post on 19-May-2015
transcript
4G -WIRELESS TECHNOLOGY4G -WIRELESS TECHNOLOGY
Contents
Introduction Evolution of Processors and DSP Technology for 4G Beyond 3G Why 4G ? Principle Technologies Features of the 4G systems ITU’s Vision of IMT 4G Architecture 4G Networks Difference between 3G and 4G Advantages & Disadvantage Future Outlook Conclusion Bibliography
Introduction
Definition : According to the Wireless World Research Forum
(WWRF),4G is a combination of wired and wireless networks in computer, consumer electronics and communication technology systems based on the internet technology that can merge applications like the Wi-Fi and Wi-MAX capable of transmitting at a speed ranging from 100 Mbps(in cell-phone networks) to 1Gbps(in local Wi-Fi networks). It is also known as “beyond 3G,"
Evolution of 4G Technology
Beyond 3G
Affordable broadband communication everywhere and on the move.
All-IP network for all applications – voice, messaging and multimedia.
Beyond 3G
Why 4G ?
Business Need and Opportunity Technology Pull Rate of Innovation Disruptive Technologies Standardization New Revenue Opportunities Validation of Radio Technologies Cost and Availability of Spectrum Ecosystem Development
Principle Technologies
OFDM : To exploit the frequency selective channel property.
MIMO : To attain ultra high spectral efficiency.
UMTS : Universal Mobile Telecommunication System.
SMART ANTENNAS , SDR
Adaptive radio interface Modulation, spatial processing including multi-
antenna and multi-user MIMO
Features of the 4G system
Support interactive multimedia, voice, video, wireless internet and other broadband services.
High speed, high capacity and low cost per bit. Global mobility, service portability, scalable
mobile networks. Better scheduling and call admission control
techniques. Seamless switching, variety of services based on
Quality of Service (QoS) requirements. Ad hoc networks and multi-hop networks.
4G Applications
Fully integrated IP solution “Anytime, Anywhere”.
4G is capable of providing users with streaming High definition television.
Global access and interconnection.
Data rates of at least 100Mbps.
Seamless connectivity - wireless and wire-lines.
ITU’s Vision of IMT-Advanced Providing Service Continuity
4G NETWORKS
NIT DoCoMo
(Japan) SPRINT NEXTEL
(Europe) DiGiWeb (Irish Co) TELUS & BELL
(Canada) VERIZON WIRELSS
(US)
4G Broadband Services
Low cost
Coverage of Wide Area
Wide Variety of Services Capability
Capacity and performance improvement
Innovative wireless technologies
Key Attributes of 4G
Support for Multiple Applications and Services
Quality of Service
Network Detection and Network Selection
Seamless Handover and Service Continuity
Technology and Topology Independence
3G & 4GAttribute 3G 4G
Speed (Data Rate) 385 Kbps - 2 Mbps 20 – 100 Mbps
Frequency Bandwidth 1.6 - 2.5 GHz 2 – 8 GHz
Access WCDMA/CDMA 2000 MC-CDMA or OFDM
Bandwidth 5 – 20 MHz 100+ MHz
Switching Circuit/Packet Packet
Component Design Optimized antenna, Multi- band adapters
Smart antennas, SW Multi-band, Wideband
radios
4G Coverage & Performance
Advantages Affordable cost
High network capacity more simultaneous users per cell.
A data rate of at least 100 Mbit/s between any two points in the world.
User has freedom and flexibility to select the service at a reasonable price and QoS, anytime, anywhere.
Seamless connectivity and global 7-8 across multiple networks.
Disadvantages
Battery usage is more
Hard to implement
Need complicated hardware
Future Outlook WiMAX First 4G Technology Standardization of wireless networks 4G Multi-Biometric Platform
WiMAX First 4G Technology WiMAX is defined as "Worldwide Interoperability for
Microwave Access" by the WiMAX Forum. It was formed in June 2001 to promote conformance and
interoperability of the IEEE 802.16 standard officially known as Wireless MAN.
WiMAX aims to provide wireless data over long distances, in a variety of different ways, from point to point links to full mobile cellular type access.
WiMAX service providers covering 430 million people globally in 135 countries today.
4G at a 3G price Speeds of up to 100 Mbps Customer satisfaction.
WiMAX Service Concept
4G Multi-Biometric Platform
Interoperability
Scalability
Modularity
Flexibility
Expandability
Open Standards
CONCLUSION
4G is showing tremendous promise and has the capacity to revolutionize our world.
High Speed, Capacity, low cost per bit
Single worldwide cellular network
Scope of wireless networks is expanding.
Bibliography
www.google.com www.wikipedia.com www.technologyworld.com www.remon-4g.org.il http://www.ieee-infocom.org www.nmscommunications.com www.networkworld.com/news http://www.cefriel.it/topics/ http://www.nd.edu/NET/wireless/4G http://www.nsf.gov http://www.wireless-world-research.org
Thank You
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