Modulation Techniques

Fundamentals of Science:

http://www.eh.doe.gov/techstds/standard/standard.html Has various handbooks on Fundamentals of science; a web-surfer's delight.


Modulation in General:

http://en.wikipedia.org/wiki/Modulation

http://www.fas.org/man/dod-101/navy/docs/es310/syllabus.htm Has lot more info than modulation; but very basic.

http://www.rfcafe.com/references/electrical.htm is an ensemble and has some interesting links; more tuned to RF technology as the website name suggests.


Analog signal on the Analog Carrier:

Amplitude Modulation:

http://en.wikipedia.org/wiki/Amplitude_modulation

http://www.fas.org/man/dod-101/navy/docs/es310/AM.htm

http://www.rfcafe.com/references/electrical/amplitude_modulation.htm

Frequency Modulation:

http://www.rfcafe.com/references/electrical/frequency_modulation.htm

http://www.fas.org/man/dod-101/navy/docs/es310/FM.htm

http://en.wikipedia.org/wiki/Frequency_modulation

Digital signal on the Analog Carrier: (Shift-keying)

http://www.fas.org/man/dod-101/navy/docs/es310/DigiComs/digicoms.htm It has some basic info with clear outline; but missing pictures.