Modulation<br />Richard Brooks<br />CIS3305<br />
What is Modulation?<br />Modulation is the conversion of an digitalsignal to a analog signal.<br />Modulation is also the ...
Process of Modulation<br />Modulation<br />Demodulation<br />Modem<br />Analog Modulated<br />Signal<br />Binary Data<br /...
Types of Modulation<br />There are several forms of modulation<br />Amplitude modulation (ex telephone, radio)<br />Freque...
AM deals with the volume or amplification of the signal.<br />Amplitude (low)<br />Low<br />Amplitude<br />(0)<br />Amplit...
FM has to deal with the size or length of the wave rather then the volume of the signal.<br />Wavelength<br />Low<br />Fre...
Phase Modulation<br />Two types of waves are used<br />Easier for electronic equipment to deal with phase differences<br /...
Quadrature Modulation<br />QAM uses two carrier waves, Sine and Cosine.<br />Sine wave is out of sync with the cosine wave...
Quadrature Modulation<br />64-QAM<br />16-QAM<br />
References<br />N6MB.pptx “Modulation” http://wps.prenhall.com/bp_panko_bdnt_6/52/13436/3439647.cw/index.html<br />Busines...
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Richard Brooks Modulation

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Richard Brooks Modulation

  1. 1. Modulation<br />Richard Brooks<br />CIS3305<br />
  2. 2. What is Modulation?<br />Modulation is the conversion of an digitalsignal to a analog signal.<br />Modulation is also the process of varying one waveform in relation to another waveform.<br />
  3. 3. Process of Modulation<br />Modulation<br />Demodulation<br />Modem<br />Analog Modulated<br />Signal<br />Binary Data<br />PSTN<br />Modem<br />PSDN<br />Modem<br />Server <br />Client<br />
  4. 4. Types of Modulation<br />There are several forms of modulation<br />Amplitude modulation (ex telephone, radio)<br />Frequency modulation (ex high-fidelity radio, analog television)<br />Phase modulation (ex wireless networks)<br />Quadrature amplitude modulation (QAM), which combines amplitude and phase modulation (ex digital cable, HDTV, ADSL and Cable Modems)<br />
  5. 5. AM deals with the volume or amplification of the signal.<br />Amplitude (low)<br />Low<br />Amplitude<br />(0)<br />Amplitude (high)<br />High<br />Amplitude<br />(1)<br />1<br />0<br />Amplitude<br />Modulation<br />(1011)<br />1<br />1<br />Amplitude Modulation<br />
  6. 6. FM has to deal with the size or length of the wave rather then the volume of the signal.<br />Wavelength<br />Low<br />Frequency<br />(0)<br />Wavelength<br />High<br />Frequency<br />(1)<br />0<br />1<br />Frequency<br />Modulation<br />(1011)<br />1<br />1<br />Frequency Modulation<br />
  7. 7. Phase Modulation<br />Two types of waves are used<br />Easier for electronic equipment to deal with phase differences<br />In Phase<br />(0)<br />180 degrees<br />out of phase<br />(1)<br />0<br />1<br />Frequency<br />Modulation<br />(1011)<br />1<br />1<br />
  8. 8. Quadrature Modulation<br />QAM uses two carrier waves, Sine and Cosine.<br />Sine wave is out of sync with the cosine wave<br />Uses multiple possible amplitude levels<br />
  9. 9. Quadrature Modulation<br />64-QAM<br />16-QAM<br />
  10. 10. References<br />N6MB.pptx “Modulation” http://wps.prenhall.com/bp_panko_bdnt_6/52/13436/3439647.cw/index.html<br />Business Data Networks and Telecommunications, 6/e; Panko, Raymond R. “More on Modulation” Module B pages 496-499<br />

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