Line Coding Line Coding Schemes Block Coding Scrambling

1. Presented by :
Md. Sumon Sarder.(161-15-953)

2. Introduction
What is Digital transmission?

3. DIGITAL-TO-DIGITAL CONVERSION
The conversion involves three techniques:
1. line coding,
2. block coding,
3. scrambling.

5. Unipolar NRZ

6. Polar NRZ-L and NRZ-I

7. Polar RZ

8. Polar Biphase: Manchester and differential Manchester

9. Bipolar schemes: AMI and pseudoternary

10. Multilevel: 2B1Q

11. Multilevel: 8B6T

12. Multitransition: MLT-3

13. Block coding concept

14. scrambling
AMI used with scrambling

15. Scrambling has two part:
B8ZS
HDB3

16. Two cases of B8ZS scrambling technique

17. Different situations in HDB3 scrambling technique