1. Chapter 5 AM, FM and Digital Modulated Systems

2. In this chapter, we will study the techniques of bandpass communications. 1.Analog baseband signal (AM, FM, etc) 2.Digital baseband signals (OOK, BPSK, etc.) 3.Multiplexing (TDM, FDM, CDM)

3. Basic Model for Bandpass Communication SourceDestination

4. Amplitude Modulation

8. Generation of High-Power AM by Pulse Width Modulation

12. Costas Loop

13. Squaring Loop

15. Spectrum for USSB Signal

17. Generation of SSB Signals

20. VSB Spectra

22. Angle Modulation

24. Angle Modulator Circuits RFC : Radio Frequency Choke

26. FM with m(t) = Sinusoidal Signal

30. Bessel functions: n = 0,1, 2, 3, 4, 5, 6

31. Magnitude spectra for FM or PM

35. Spectrum of WBFM Signal

36. Spectrum of Wideband Binary FSK

37. Pre-emphasis and De-emphasis

38. Frequency Division Multiplexing

39. FM Stereo System

40. FM Broadcasting

42. Binary Modulated Bandpass Signals

43. Digital Bandpass Signals

45. PSD

46. Detection of OOK

47. Detection of BPSK

48. From Frequency Shift Keying section to the end of Chapter 5, the math is quite complex. Thus, we will focus on the concepts and understanding how various techniques work. Section 5.10 will be covered briefly. Section 5.11 will not be covered. Note that Chapter 5 is concerned with the technology. Do not focus too much about the mathematical details.

49. Frequency Shift Keying

50. FSK is very popular for telephone modems. FSK Modem

51. Example FSK Data

52. Spectra of FSK Data

53. PSD for Complex Envelope of FSK

54. Detection of FSK

55. Quadrature Phase Shift Keying (QPSK) (4 Level PSK)

56. Quadrature Amplitude Modulation (QAM) (Multi Level AM)

57. Generation of QAM

59. MSK, GMSK, QPSK, and OQPSK

60. Direct Sequence Spread Spectrum

61. Autocorrelation and PSD for an m-Sequence PN Waveform

62. Approximate PSD of BPSK-DS-SS Signal

63. Frequency-Hopped Spread Spectrum