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In this case the carrier is a pulse train rather than a sine wave and the spectrum of the carrier consists of several components at n wc = 2np/T where T is the time between pulses. The applet below shows a PAM signal and how it varies with modulating signal amplitude and frequency.
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cnyack.homestead.com/files/modulation/modpam.htm
cnyack.homestead.com/files/modulation/modpam.htm
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Modulation - Wikipedia, the free encyclopedia
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Modulation is the process of varying one waveform in relation to another waveform. In telecommunications, modulation is used to convey a message, or a musician may modulate the tone from a musical in...
en.wikipedia.org/wiki/Modulation
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EE 345S Real-Time Digital Signal Processing Laboratory - Lecture 14 ... Audio Guide, Texas Instruments, March 2009. Guide helps in selection of floating-point DSPs and interfacing components for audio application development. ... Lecture on Digital Pulse Amplitude Modulation in PowerPoint format.
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users.ece.utexas.edu/~bevans/courses/realtime/lectures/...
users.ece.utexas.edu/~bevans/courses/realtime/lectures/14_Digital_PAM/index.html
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Pulse amplitude modulation (PAM) is the transmission of data by varying the amplitudes (voltage or power levels) of the individual pulses in a regularly timed sequence of electrical or electromagnetic pulses. ... PAM is only one of several forms of pulse modulation. Other methods include varying the durations (or widths),
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whatis.techtarget.com/definition/0,,sid9_gci1102195,00....
whatis.techtarget.com/definition/0,,sid9_gci1102195,00.html
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pulse-amplitude modulation (PAM) ... pulse-amplitude modulation (PAM): Modulation in which the amplitude of individual, regularly spaced pulses in a pulse train is varied in accordance with some characteristic of the modulating signal. (188) Note: The amplitude of the amplitude-modulated pulses conveys the information.
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www.its.bldrdoc.gov/fs-1037/dir-029/_4233.htm
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Slide 27 of 178...
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www.fredonia.edu/department/communication/schwalbe/cm35...
www.fredonia.edu/department/communication/schwalbe/cm350/sld027.htm
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Summary: A description of the functionality of a pulse amplitude modulated transmission system in a bandlimited channel. The bandlimited nature of the channel causes it to have memory which causes intersymbol interference, ... You are here: Home » Content » Pulse Amplitude Modulation Through Bandlimited Channel...
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cnx.org/content/m10094/latest/
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pulse-amplitude modulation: Definition and Pronunciation ... ; Pronunciation: (puls'am'pli-tOOd", -tyOOd"), [key] Telecommunications. modulation of the amplitude of a train of electric pulses used to carry signals (pulse' car"rier). Abbr.: PAM...
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www.infoplease.com/dictionary/pulse-amplitude+modulatio...
www.infoplease.com/dictionary/pulse-amplitude+modulation
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