Wcdma

1. Technical Seminar Presentation
“W-CDMA”
National Institute of Science and Technology [1]
Presented by
Sangram Keshari Nayak
Roll#EC200117075
Under the guidance of
Mr. N. Srinivasu
Sangram Keshari Nayak(EC200117075)

2. Technical Seminar Presentation
WHAT IS W-CDMA?
National Institute of Science and Technology [2]
 W-CDMA stands for wideband code division
multiple access
 A 3G network having higher capacity
 Uses a spectrum with 5MHz carrier
Sangram Keshari Nayak(EC200117075)

3. Technical Seminar Presentation
GENERAL INFORMATION ON CDMA
National Institute of Science and Technology [3]
 How does CDMA work ?
 What is the difference between CDMA one and
CDMA2000?
Sangram Keshari Nayak(EC200117075)

4. Technical Seminar Presentation
GENERAL INFORMATION ON CDMA
National Institute of Science and Technology [4]
 What is the difference between umts and wcdma?
• Universal Mobile Telecommunications System (UMTS)
 Wideband Code Division Multiple Access (WCDMA) is
an air interface standard and it is the key technology for
UMTS.
Sangram Keshari Nayak(EC200117075)

5. Technical Seminar Presentation
W-CDMA BASIC CHARACTERISTICS
National Institute of Science and Technology [5]
 Bit-error rate
 Acquisition and tracking of the spreading
sequences
 Power control
 Fading statistics
Sangram Keshari Nayak(EC200117075)

6. Technical Seminar Presentation
SPREAD SPECTRUM CODING
National Institute of Science and Technology [6]
Performance characteristics of wcdma
Sangram Keshari Nayak(EC200117075)

7. Technical Seminar Presentation
PARAMETERS OF WCDMA
National Institute of Science and Technology [7]
 Data and chip rate
 Channel bandwidth
 Spreading and modulation
 Handover
Sangram Keshari Nayak(EC200117075)

8. Technical Seminar Presentation
W-CDMA DESIGN ISSUES
1.TURBO CODING
National Institute of Science and Technology [8]
Turbo Encoder
Sangram Keshari Nayak(EC200117075)

9. Technical Seminar Presentation
W-CDMA DESIGN ISSUES
National Institute of Science and Technology [9]
TURBO DECODER
Sangram Keshari Nayak(EC200117075)

10. Technical Seminar Presentation
W-CDMA DESIGN ISSUES
National Institute of Science and Technology [10]
2. INTERFERENCE-CANCELLATION TECHNIQUES
Interference Cancellation Concept
Sangram Keshari Nayak(EC200117075)

11. Technical Seminar Presentation
WCDMA SYSTEM
National Institute of Science and Technology [11]
Sangram Keshari Nayak(EC200117075)

12. Technical Seminar Presentation
RADIO NETWORK FUNCTIONALITY
National Institute of Science and Technology [12]
 Power control
 Soft handover
Soft Hand Over Process
Sangram Keshari Nayak(EC200117075)

13. Technical Seminar Presentation
UPGRADE GSM TO WCDMA
National Institute of Science and Technology [13]
Wcdma channels
Sangram Keshari Nayak(EC200117075)