SPL Tech
April 1st, 2007, 09:46 AM
I have a question on how data signals are modulated electrically. Now I know that many signals use frequency modulation. That is the data is created by changing the frequency of the signal in a pattern that a receiver can decode into data.
However how are high bandwidth signals modulated in electrical lines? Are they also frequency modulated and the frequency is just extended into the billions of hertz range to accommodate that additional bandwith? Or do they use something other then frequency modulation to create data in a high bandwith electrical signal?
However how are high bandwidth signals modulated in electrical lines? Are they also frequency modulated and the frequency is just extended into the billions of hertz range to accommodate that additional bandwith? Or do they use something other then frequency modulation to create data in a high bandwith electrical signal?