Assertion: signal's information | /r/AtLocation | sideband
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text: The information in a modulated radio signal is contained in the sidebands while the power in the carrier frequency component does not transmit information itself, so newer forms of radio communication (such as spread spectrum and ultra-wideband), and OFDM which is widely used in Wi-fi networks, digital television, and digital audio broadcasting (DAB) do not use a conventional sinusoidal carrier wave.