Engineering, 24.08.2021 19:00 jason9394
A certain communication channel is characterized by a 60 dB attenuation and additive white noise with the power spectral density of N/2=0.5 * 1014 W/Hz. The bandwidth of the message signal is 1 MHz, and its normalized power is W. If we require that the SNR after demodulation be 30 dB, find the necessary transmitter power in each of the following cases:
A) Upper single-sideband (USSB) modulation.
B) DSB-SC modulation.
C) Conventional AM with a modulation index of 0.5.
Answers: 3
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