engineering recuitment GATE ECE 2023-24 Test Series Communication Systems Random Processes Correlation and Power Spectral Density
Which of the following power spectral densities is / are valid?
1
\(\frac{{4\sin \omega }}{{1 + {\omega ^2}}}\)
2
5 + jω2
3
\(\frac{5}{{1 + {\omega ^2}}}\)
4
\({e^{ - {{ {\omega}}^2}}}\)