26-04-2011, 02:43 PM
Presented By
Dharmesh R Desai
Kaushik N Dave
[attachment=12851]
4G WIRELESS TECHNOLOGY
WHAT IS 4G
Offers Compatible Transmission Technology And New Frequency Bands.
It Is Expected To Give A Comprehensive And Secure All IP Based Solution, Which Will Have Facilities Like IP Telephony, Ultra-broadband Internet Access, Gaming Services And Streamed Multimedia Facility To The User
DEVELOPMENT OF TECHNOLOGYES
3G VS 4G
POSSIBLE 4G PARAMETER
WORKING TECHNOLOGY USED IN 4G
ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING(OFDM)
To Avoid Frequency Selective Fading
OFDM=modulation + Multiplexing
Multi-carrier Transmission Technique
Multiple Massage Can Be Sent In Moving
A Single Radio Channel Using FDM
By Making All Sub-carrier Orthogonal To One Another It Prevent Interface Between Closely Placed Sub-carrier
Multiple Access Capability Using CDMA Or TDMA
Each Carrier Having Very Narrow Bandwidth (Few KHz)
MULTI-INPUT MULTI-OUTPUT(MIMO) 1:The Signals At Transmit Antennas End And At Receive Antennas End Are "Combined“ So That Both The Quality And The Data Rate Of The Communication Can Be Improved 2
ue To This Quality Of Service Incresses 3:Reliability Incresses
SOFTWARE DEFINE RADIO(SDR)
Solves The Problem Of Global Roaming By Using Radio Functionality
It Overcomes The Power , Cost , Size And Compatibility Limitation
ADVANTAGES OF SDR
Flexibility And Reconfigurability
Interoperability
Connectivity
DISADVANTAGES OF SDR
It Is Impossible To Have Just One Antenna & One Low Noise Amplifier To Serve Wide Range Of Frequency Band
Complexity And Physical Size Will Be Increased
Available ADC Are Not Fast Enough
APPLICATION
Localized Information Services
(General News , travel Services)
Communication Services
(E-mail, Video Conferencing, Fax , sms)
Organizational Services
(Calendars , address Book)
Entertainment Services
(Chat, Photo Trading , gaming & Tele-geoprocessing )
CHALLENGES TO 4G
Multiple 4G Definition
Wireless System Selection
User Centric Approach
Thermal Mobility
ADVANTAGES OF 4G
High Data Rate
High Resolution
More Secure
Affordable Prize
CONCLUSION
In This Paper The Overall Vision Of The 4G Mobile Communication Systems Was Presented. Through Discussion It Has Been cleared That The 4G Mobile Network Will Provide Very High Data Rate.
We Also Discussed The Technologies That Are The Main Building Blocks Of 4G Which Includes OFDM, MIMO, And SDR
Dharmesh R Desai
Kaushik N Dave
[attachment=12851]
4G WIRELESS TECHNOLOGY
WHAT IS 4G
Offers Compatible Transmission Technology And New Frequency Bands.
It Is Expected To Give A Comprehensive And Secure All IP Based Solution, Which Will Have Facilities Like IP Telephony, Ultra-broadband Internet Access, Gaming Services And Streamed Multimedia Facility To The User
DEVELOPMENT OF TECHNOLOGYES
3G VS 4G
POSSIBLE 4G PARAMETER
WORKING TECHNOLOGY USED IN 4G
ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING(OFDM)
To Avoid Frequency Selective Fading
OFDM=modulation + Multiplexing
Multi-carrier Transmission Technique
Multiple Massage Can Be Sent In Moving
A Single Radio Channel Using FDM
By Making All Sub-carrier Orthogonal To One Another It Prevent Interface Between Closely Placed Sub-carrier
Multiple Access Capability Using CDMA Or TDMA
Each Carrier Having Very Narrow Bandwidth (Few KHz)
MULTI-INPUT MULTI-OUTPUT(MIMO) 1:The Signals At Transmit Antennas End And At Receive Antennas End Are "Combined“ So That Both The Quality And The Data Rate Of The Communication Can Be Improved 2
ue To This Quality Of Service Incresses 3:Reliability Incresses SOFTWARE DEFINE RADIO(SDR)
Solves The Problem Of Global Roaming By Using Radio Functionality
It Overcomes The Power , Cost , Size And Compatibility Limitation
ADVANTAGES OF SDR
Flexibility And Reconfigurability
Interoperability
Connectivity
DISADVANTAGES OF SDR
It Is Impossible To Have Just One Antenna & One Low Noise Amplifier To Serve Wide Range Of Frequency Band
Complexity And Physical Size Will Be Increased
Available ADC Are Not Fast Enough
APPLICATION
Localized Information Services
(General News , travel Services)
Communication Services
(E-mail, Video Conferencing, Fax , sms)
Organizational Services
(Calendars , address Book)
Entertainment Services
(Chat, Photo Trading , gaming & Tele-geoprocessing )
CHALLENGES TO 4G
Multiple 4G Definition
Wireless System Selection
User Centric Approach
Thermal Mobility
ADVANTAGES OF 4G
High Data Rate
High Resolution
More Secure
Affordable Prize
CONCLUSION
In This Paper The Overall Vision Of The 4G Mobile Communication Systems Was Presented. Through Discussion It Has Been cleared That The 4G Mobile Network Will Provide Very High Data Rate.
We Also Discussed The Technologies That Are The Main Building Blocks Of 4G Which Includes OFDM, MIMO, And SDR
