CSE3213_04_AnalogDigitalSignalsW2012 part 6

CSE3213_04_AnalogDigitalSignalsW2012 part 6 - Composite...

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26 Composite Analog Signals (cont.) no transmission medium is perfect – each medium passes some frequencies and blocks or weakens others composite signal sent at one end of transmiss. medium (comm. channel) , may not be received in the same form at the other end passing a square wave through any medium will always deform the signal !!! Composite Signals and Transmission Medium range of frequencies passed by the channel – difference between highest and lowest frequency that channel can satisfactorily pass Channel Bandwidth communication channel
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27 Composite Analog Signals (cont.)     x sin(x) or f π f π sin T πn T πn sin T 2A Example [ frequency spectrum of a data pulse ] What happens if →0 ??? envelope of frequency spectrum aperiodic signal continuous freq. spectrum periodic signal discrete freq. spectrum
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28 Data vs. Signal Analog vs. Digital Analog Signals Simple Analog Signals Composite Analog Signals Digital Signals
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This note was uploaded on 02/14/2012 for the course CSE 3213 taught by Professor A during the Winter '10 term at York University.

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CSE3213_04_AnalogDigitalSignalsW2012 part 6 - Composite...

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