It appears that sinusoidal signals are very useful in signal processing, communications, and information theory. I am curious to know very why. I understand that information can be transmitted via a sine wave, from the principle that sine waves of different frequencies are orthogonal.(adsbygoogle = window.adsbygoogle || []).push({});

But use sine waves to communicate information? Can't you use other functions? Isn't all digital data in 0s and 1s? Why even use the analog domain then?

These are rather general questions, so I expect no detailed answer in a post. However, I would be interested in a link or a recommendation to a text that explains this quite well, without being too dense in the details. My mathematical background is fairly strong, but I don't want the rigor of the mathematics to blind me from the actual ideas.

BiP

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# Why sinusoidal signals?

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