Tutorial Note6 - ELEG 4503 Modern Communication Systems...

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ELEG 4503 Modern Communication Systems Tutorial 6 Oct 13, 2016
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Q1 Modulation & Demodulation Baseband Modulation Carrier Radio Channel Synchronization/Detection/ Decision Carrier Data in Data out Effective radiation of EM waves requires antenna dimensions comparable with the wavelength: Antenna for 3 kHz would be ~100 km long Antenna for 3 GHz carrier is 10 cm long Sharing the access to the telecommunication channel resources
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Q1 Modulation & Demodulation Modulation - process (or result of the process) of translation the baseband message signal to bandpass (modulated carrier) signal at frequencies that are very high compared to the baseband frequencies. Demodulation is the process of extracting the baseband message back the modulated carrier. An information-bearing signal is non-deterministic, i.e. it changes in an unpredictable manner.
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Q2 Digital Modulation
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Q2 Digital Modulation
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Q3 Demodulation & Detection Demodulation Is process of removing the carrier signal to obtain the
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  • Fall '16
  • PC Ching
  • coherent, carrier, Demodulation, coherent detection

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