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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)
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)
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)
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)
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)
Technical Seminar Presentation 
SPREAD SPECTRUM CODING 
National Institute of Science and Technology [6] 
Performance characteristics of wcdma 
Sangram Keshari Nayak(EC200117075)
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)
Technical Seminar Presentation 
W-CDMA DESIGN ISSUES 
1.TURBO CODING 
National Institute of Science and Technology [8] 
Turbo Encoder 
Sangram Keshari Nayak(EC200117075)
Technical Seminar Presentation 
W-CDMA DESIGN ISSUES 
National Institute of Science and Technology [9] 
TURBO DECODER 
Sangram Keshari Nayak(EC200117075)
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)
Technical Seminar Presentation 
WCDMA SYSTEM 
National Institute of Science and Technology [11] 
Sangram Keshari Nayak(EC200117075)
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)
Technical Seminar Presentation 
UPGRADE GSM TO WCDMA 
National Institute of Science and Technology [13] 
Wcdma channels 
Sangram Keshari Nayak(EC200117075)

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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)
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