Evolution of 4G , 4G Applications, Wifi, Wimax

1. BY
MADHU BALA.M
II C.S
2012

2. CONTENTS
 EVOLUTION OF 4G
 CONCEPT OF 4G
 3G vs 4G
 APPLICATIONS
 CONCEPT OF WiMAX
 Wi-Fi vs WiMAX
 CONCLUSION
2012

3. 0G
Half-duplex lines
-One speaks, the other cannot speak.
Push-to-talk protocol (PTT)
Voice only
Two-way radio / “Walkie-Talkies”
Mobile Telephone System (MTS)
1946 MTS
1962 IMTS
2012

4. 1G
 Analog cell phones
 Voice only
 1980s to 1990s
 NMT (Nordic Mobile Telephone)
 AMPS (Advanced Mobile Phone System)
 Problem with 1G:
- Not encrypted
- Prone to distortions
2012

5. 2G
1991
- Digital networks
- SMS
Multiplexing : TDMA and CDMA
Mainly circuit : switched
Standards : GSM, iDEN
1999  2.5G
GPRS : Data rate up to 128 kb/s
EDGE : Data rate up to 384 kb/s
TDMA (Time Division Multiple Access)
CDMA (Code Division Multiple Access)
GSM: Originally from Europe but used worldwide
iDEN: Proprietary network used by Nextel in the US2012

6. 3G
Combines with IP based services
Video-conferencing
Music downloading
Transfer of data:
Emails
Documents
CDMA2000, UMTS, W-CDMA
Problem:
Cost of deploying
Different places, different air interface
CDMA (Code Division Multiple Access)
UMTS- UNIVERSAL MOBILE TELECOMMUNICATION SYSTEM
W-CDMA: Wideband Code Division Multiple Access
2012

7. 4G CONCEPT
“The user has freedom and flexibility
to select any desired service with
reasonable QoS and affordable price,
anytime, anywhere.”
4G networks are projected to
provide speeds of 100 Mbps
while moving and 1 Gbps while
stationary.
2012

8. Catagories 3g 4g
Speeds 384Kbs to 2Mbps 20 to 100Mbps
Bandwidth 5-20MHz 100MHz and more
Access Technologies W-CDMA MC-CDMA
Multiplexing CDMA CDMA
0
10
20
30
40
50
60
70
80
90
100
3G 4G
Mbps
3G VS 4G
2012

9. 2012

10. APPLICATIONS
Virtual Presence
 Tele-geoprocessing applications
 Tele-Medicine
Tele- Education
 Multimedia– Video Services
2012

11. VIRTUAL PRESENCE TELE-MEDICINE2012

12. WiMAX
(World Interoperability for Microwave Access)
Two main applications of WiMAX:
1.Fixed WiMAX:
Fixed WiMAX applications are point-to-multipoint
enabling the delivery of last mile wireless broadband access as an
alternative to cable and DSL for homes and businesses.
2.Mobile WiMAX:
Mobile WiMAX offers the full mobility of
cellular networks at true broadband speeds.
2012

13. 2012

14. Wi-Fi vs WiMAX
Wi-Fi
1.Uses shared spectrum
2.Operates at short distance
WiMAX:
1.Uses private Licensed Spectrum
2.Operates at larger public areas
2012

15. – Embed 4G technology
into all end-user devices
– Develop mobile personal
gateways
– Develop external
interfaces with 4G
peripherals
4G ACCESS OPTION
2012

16. THANK
YOU!!!!!
2012