Transcription of Introduction to Communication Systems
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Introduction to Communication Systems
Introduction to Communication Systems James Flynn Sharlene Katz Communications System Diagram July 1, 2010 Flynn/Katz - SDR 2 Information Source and Input Transducer Transmitter Channel Receiver Output Transducer Communications System Diagram July 1, 2010 Flynn/Katz - SDR 3 Information Source and Input Transducer Transmitter Channel Receiver Output Transducer Information Source: Audio, image, text, data Input Transducer: Converts source to electric signal Microphone Camera Keyboard Communications System Diagram July 1, 2010 Flynn/Katz - SDR 4 Information Source and Input Transducer Transmitter Channel Receiver Output Transducer Output Transducer: Converts electric signal to useable form Speaker Monitor Communications System Diagram July 1, 2010 Flynn/Katz - SDR 5 Information Source and Input Transducer Transmitter Channel Receiver Output Transducer Transmitter: Converts electrical signal into form suitable for channel Modulator Amplifier Communications System Diagram July 1, 2010 Flynn/Katz - SDR 6 Information Source and Input Transducer Transmitter Channel Receiver Output Transducer Channel: Medium used to transfer signal from transmitter to receiver.
An infinite number of baseband signals ECE 460 Digital Modulation: Signals are converted to binary data, encoded, and translated to higher frequency FSK, PSK, QPSK, QAM More complex, but reduces the effect of noise Finite number of baseband signals ECE 561
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