baseband

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baseband

(ˈbeɪsˌbænd)
n
(Telecommunications) a transmission technique using a narrow range of frequencies that allows only one message to be telecommunicated at a time. See also broadband
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Examples of generated passband signal spectra are shown in Fig.
However, the measured results should be applicable to signals occurring in normal receiver operation -- the modulated passband signal and the demodulated baseband signal.
Substituting the input passband signal s(t) = r(t)cos(2[pi][f.