Analog and Digital The Fourier transform of the autocorrelat

Analog and Digital

The Fourier transform of the autocorrelation R_g(t) is the power spectra density S_g(f). True False Assume a baseband signal m(t) has bandwidth 100 KHz. and modulates a 1 MHz carrier using USB modulation. The bandwidth of the corresponding USB modulated signal is 100 KHz 200 KHz 1.1 Mhz none above

Solution

21. (a) True

The Fourier transform of the auto correlation is the power spectral density. i.e, Auto correlation and power spectral density are fourier transform pairs.

22. (c) 1.1 MHz

Given that baseband signal has 100KHz band width and modulted using 1MHz carrier. So bandwidth (1MHz+100KHz)=1.1MHz.