Chapter 7 Single-SidebandModulation(SSB) andFrequency ...

← Back to document page

Chapter 7Single-Sideband Modulation (SSB)and frequency TranslationContentsSlide 1Single-Sideband ModulationSlide 2SSB by DSBSC-AM and FilteringSlide 3SSB by DSBSC-AM and Filtering (cont.)Slide 4SSB and Hilbert TransformsSlide 5SSB and Hilbert Transforms (cont. 1)Slide 6SSB and Hilbert Transforms (cont. 2)Slide 6SSB Modulator Using a Hilbert TransformSlide 7Another Derivation of the SSBRepresentationSlide 8Transforms in Generating SSB SignalSlide 9Coherent SSB DemodulationSlide 10Coherent Demodulation (cont.)Slide 11Demodulator Using a Hilbert TransformSlide 12Demod. Using a Hilbert Transform (cont.)Slide 13Using a Pilot ToneSlide 14Frequency TranslationSlide 15Frequency Translation (cont.)

lowpass filter G(ω) with cutoff frequency W. In practice, the demodulator shown above should be preceded by a receivebandpass filter that passes s(t) and eliminates out-of-band noise. Frequency Domain Analysis of Operation Remember that b(t) = s(t)2cosωct. So B(ω) = S(ω +ωc)+S(ω −ωc) This translates the sidebands around ±ωc down

  Noise, Frequency