A CDE Definition
The upper or lower sideband of a carrier frequency that is amplitude modulated. To save power, the carrier and one of the sidebands is eliminated, leaving only a single sideband for transmission. Single sideband is used mostly in amateur radio (ham radio). See sideband.
In radio communications, a signal that results from amplitude modulating a carrier frequency. The upper sideband is the carrier plus modulation, and the lower sideband is the carrier minus modulation, which are mirror images of each other. See single sideband.
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