1. 8 de febrero del 2001

2. Chapter 5 Encoding

3. Figure 5-1 Different Conversion Schemes

4. Figure 5-2 Digital to Digital Encoding

5. Figure 5-3 Types of Digital to Digital Encoding

6. Figure 5-4 Unipolar Encoding

7. Figure 5-5 Types of Polar Encoding

8. NRZL Especificación del Protocolo:

9. Figure 5-6 NRZ-L and NRZ-I Encoding

10. Figure 5-7 RZ Encoding

11. Bifase (Auto-Sincronizados) • Siempre hay una transición a mitad del intervalo de duración del bit. • Técnicas • Manchester: La transición de mitad del intervalo sirve para sincronización y transmisión de datos. • Manchester Diferencial: La transición de mitad del intervalo solo sirve para sincronización

12. Manchester Especificación del Protocolo:

13. Figure 5-8 Manchester and Diff. Manchester Encoding

14. 1. ¿Cuál es la capacidad de un canal de 5kHz que utiliza codificación Manchester? • 2. ¿Y si utilizara codificación MLT-3?

15. Figure 5-9 Types of Bipolar Encoding

16. Binario Multinivel • Técnicas • biploar-AMI (“Alternate Mark Inversion”) • pseudoternario • MLT-3 (Multi-Level Transmit - 3 Levels) • 2B1Q

17. Especificación del Protocolo: • Bipolar-AMI

18. Figure 5-10 Bipolar AMI Encoding

19. Figure 5-11 B8ZS Encoding

20. Figure 5-12 HDB3 Encoding

21. Figure 5-13 Solution to Example 5.1

22. Figure 5-14 Solution to Example 5.2

23. Figure 5-15 Analog to Digital Encoding The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

24. Figure 5-16 PAM The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

25. Figure 5-17 Quantized PAM Signal The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

26. Figure 5-18 Quantizing Using Sign and Magnitude The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

27. Figure 5-19 PCM The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

28. Figure 5-20 From Analog to PCM The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

29. Figure 5-20-continued From Analog to PCM The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

30. Figure 5-20-continued From Analog to PCM The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

31. ~ S S S(t) k k ~ S (t) Figure 5-20-continued From Analog to PCM The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

32. Figure 5-21 Nyquist Theorem The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

33. Figure 5-22 Digital to Analog Encoding The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

34. Figure 5-23 The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

35. ASK • Especificación del Protocolo:

36. Figure 5-24 ASK The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

37. Figure 5-25 Bandwidth for ASK The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

38. FSK • Especificación del Protocolo:

39. Figure 5-27 FSK The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

40. Figure 5-28 Bandwidth for FSK The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

41. PSK • Especificación del Protocolo:

42. Figure 5-29 PSK The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

43. Figure 5-30 PSK Constellation The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

44. Figure 5-31 4-PSK The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

45. Figure 5-32 4-PSK Characteristics The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

46. Figure 5-33 8-PSK Characteristics The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

47. Figure 5-34 PSK Bandwidth The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill

48. QAM (4) • Especificación del Protocolo

49. 00 01 00 10 10 11 01 01 10 11 QAM(Quadratura Amplitude Modulation) 01 10 00 Re 11

50. Figure 5-35 4-QAM and 8-QAM Constellations The McGraw-Hill Companies, Inc., 1998 WCB/McGraw-Hill