Understanding Digital Communications

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Signals and Spectra [edit]

  • Signal and Spectra (pdf)
  • Convolution Functions of Deterministic Signals [1]
  • Correlation Functions of Deterministic Signals [2]
  • Correlation Functions of Random Signals [3]


Formatting [edit]

  • Formatting (pdf)
  • Pulse Modulation (pdf)
  • Line Code (pdf)


Pulse Modulation

  • Sampling (pdf)
  • Quantization (pdf)
  • PAM (Pulse Amplitude Modulation) (pdf)
  • PPM (Pulse Position Modulation) (pdf)
  • PCM (Pulse Code Modulation) (pdf)
  • DM (Delta Modulation) (pdf)
  • DPCM (Differential Pulse Code Modulation) (pdf)


Baseband Mod/Demod[edit]

  • Baseband Modulation (pdf)
  • Baseband Demodulation (pdf)
  • Matched Filter (pdf)


Baseband Data Transmission

  • ISI (Inter-Symbol Interference) (pdf)
  • Nyquist Channel (pdf)
  • Raised-Cosine Pulse (pdf)
  • Eye Diagrams (pdf)
  • Equalization (pdf)


BandPass Mod/Demod[edit]


BandPass Modulation Techniques

  • ASK (Amplitude Shift Keying) (pdf)
  • PSK (Phase Shift Keying) (pdf)
  • FSK (Frequency Shift Keying) (pdf)
  • Coherent Detection (pdf)
  • Non-coherent Detection (pdf)
  • M-ary Modulation (pdf)
  • Constellations of Signal Points (pdf)


Communication Link[edit]


Modulation and Coding [edit]


Synchronization [edit]


Muliple Access [edit]


Spread Spectrum [edit]



go to [ Electrical_&_Computer_Engineering_Studies ]

  1. The necessities in DSP, See Linear Time Invariant System − Continuous Time Case −1. Convolution
  2. The necessities in DSP, See Linear Time Invariant System − Continuous Time Case −2. Correlation
  3. The necessities in DSP, See Random Signals − Correlation Functions of Random Signals


External links[edit]

Signal Processing with Scilab (1998)