Engineering, 25.12.2020 21:50 johndoesnutz4690

A frequency division multiplexing (FDM) system uses SSB-SC subcarrier modulation and FM main-carrier modulation with carrier amplitude A௖ , carrier frequency f௖ and modulation index β. There are K equal-amplitude voice input channels, each band-limited to bandwidth W, with no guard band separating the channels. Assume that the input noise at the receiver has white spectral density, ଴. (a) Determine the bandwidth of the signal at the output of the USSB-SC multiplexer. (b) Determine the transmission bandwidth of the FM system. (c) Determine the noise power at the output of the FM demodulator. (d) Determine the noise power at the output of i-th channel that occupies the frequency band [(i − 1)W, iW]. (e) How should the carrier amplitude A௜ of the i-th channel be chosen to guarantee that, after USSB demodulation, the SNR for all the channels is the same?

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A frequency division multiplexing (FDM) system uses SSB-SC subcarrier modulation and FM main-carrier...

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