Single Side Band (SSB)

Single-sideband modulation (SSB) is a refinement of amplitude modulation that more efficiently uses electrical power and bandwidth. Amplitude modulation produces a modulated output signal that has twice the bandwidth of the original baseband signal. Single-sideband modulation avoids this bandwidth doubling, and the power wasted on a carrier, at the cost of somewhat increased device complexity. Amateur radio operators began serious experimentation with SSB after World War II. It has become a de facto standard for long-distance voice radio transmissions since then.


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