Transcription of Single Sideband Modulation (SSB) - Ryerson University
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Single Sideband Modulation (SSB) - Ryerson University
S(t)>Vc: diode conducts (forward biased) C charges quickly to the max value ofs(t) s(t)<Vc: diode does not conduct (reverse biased) C discharges overRLuntils(t)>Vc The output of the ED is then lowpass filtered to eliminate the ripple, followed byblocking out the DC Sideband Modulation (SSB)Standard AM and DSB-SC techniques are wasteful of bandwidth because they both requiretransmission bandwidth of2 BHz, whereBis the bandwidth of the baseband modulatingsignalm(t).In both cases the transmission bandwidth (BT) is occupied by the upper Sideband (USB) andlower Sideband (LSB).Observations USB and LSB are uniquely related to each other, as they are symmetric , to transmit information contained withinm(t)we used to transmit only oneside band.
Single Sideband Modulation (SSB) Standard AM and DSB-SC techniques are wasteful of bandwidth because they both require transmission bandwidth of 2B Hz, where B is the bandwidth of the baseband modulating signal m(t). In both cases the transmission bandwidth (B T) is occupied by the upper sideband (USB) and lower sideband (LSB). Observations
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