The document discusses the technology of CDMA (Code Division Multiple Access). It covers the evolution of cellular systems, the history and introduction of CDMA, different multiple access methods including FDMA, TDMA, and CDMA. The document also discusses why CDMA was chosen, the generations of CDMA technology, applications of CDMA like MMS and multimedia messaging, and advantages such as increased voice capacity and data throughput.

1. CDMA TECHNOLOGY
Seminar Presentation
On

2. Major Points
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
• EVOLUTION OF CELLULAR SYSTEM
•HISTORY OF CDMA
•INTRODUCTION OF CDMA
• METHODS OF MULTIPLE ACCESS
•WHY CHOOSE CDMA?
•GENERATION OF CDMA
• APPLICATION OF CDMA
• ADVANTAGES OF CDMA

3. 1) EVOLUTION OF CELLULAR SYSTEM
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR

4. 2. HISTORY OF CDMA
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
 CELLULAR CHALLANGES
 COMMERCIAL DEVELOPMEMT

5. 2. INTRODUCTION OF CDMA
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
 PROBLEM WITH EARLIER TECHNOLOGY
 NEED OF ALTERNATIVE TECHNOLOGY
IMPLEMENTAION OF CDMA TECHNOLOGY

6. 3) METHODS OF MULTIPLE ACCESS
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7. 3.1 FDMA (FREQUENCY DIVISION)
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8. 3.2 TDMA (TIME DIVISION)
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9. 3.3 CDMA (CODE DIVISION)
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10. 4.WHY CHOOSE CDMA?
FREQUENCY REUSE IN CDMA
 MAGIC OF CDMA
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR

11. 4.1 FREQUENCY REUSE IN CDMA
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12. 4.2 MAGIC OF CDMA
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13. 5. GENERATION OF CDMA
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14. 5.1 COMPARISION OF GENERATION
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CDMA ONE
IS-95A
CDMA ONE
IS-95B
CDMA2000 1X-
EV-DO
CDMA2000
1XEV-DV
•Voice
•Data up
to 14.4
Kbps
•115 Voice
•Data up to
Kbps
•2x increases
in voice
capacity
•Up to 307
kbps* packet
data on a
single (1.25
MHz) carrier
•First 3G
system for
any
technology
worldwide
•Optimized,
very high-
speed data
(Phase 1)
•Up to
2.4Mbps*
packet data
on a single
(1.25 MHz)
carrier.
•Integrated
voice and data
(Phase 2); up
to 3.09 Mbps

15. 6 APPLICATION OVERVIEW OF CDMA
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
 MMS (MULTIMEDIA MESSAGING SERVICE)
MOVIE MAIL
PHOTO MAIL

16. 6.1 MMS (MULTIMEDIA MESSAGING SERVICE)
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17. 6.2 MOVIE MAIL
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18.
B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
6.3 PHOTO MAIL

19. B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
7.ADVANTAGES OF CDMA
INCRESED VOICE CAPACITY
 HIGHER DATA THROUGHPUT
INCREASED BATTERY LIFE
SOFT HAND-OFF
TRANSMIT DIVERSITY

20. B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
7. ADVANTAGE OF CDMA
VOICE AND DATA CHANNELS
TRAFFIC CHANNEL
TURBO CODING

21. B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
CONCLUSION

22. B.E. COMPUTER SEMINARB.E. COMPUTER SEMINAR
QUESTION
S
ANSWERS

23. Is this the end, or the beginning?
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THANK YOU