SpectrumandspectraldensityestimationbytheDiscreteFouriertransform(DFT),includingacomprehensivelistofwindowfunctionsandsomenewflat-topwindows.G.Heinzel∗,A.R¨udigerandR.Schilling,Max-Planck-Institutf¨urGravitationsphysik(Albert-Einstein-Institut)TeilinstitutHannoverFebruary15,2002AbstractThisreporttriestogivea...
This report tries to give a practical overview about the estimation of power spectra/power spectral densities using the DFT/FFT. One point that is emphasized is the relationship between estimates of power spectra and power spectral densities which is given by the effective noise bandwidth (ENBW)....
工程中我们常遇到的信号都是功率信号且这种功率信号往往都是随机信号，它的能量不收敛且也不满足周期信号...
Because the Earth’s atmosphere acts like a filter, the spectral power distribution of the light reaching the surface of the Earth from the sun changes considerably during the day. Clouds and other forms of overcast (such as smog) can also change the spectral character of sunlight and daylight...
Frequencies and spectral densities were computed for all prominent peaks in the Fourier spectrum. We have additionally introduced a peak to noise ratio as effective spectral density in order to account for frequency variations of the noise level. We have shown that a very good description of ...
Figure 8.2(b) presents the case where the original signal l can be reconstructed by recovering the central spectral island. Figure 8.2(c) shows the case where the Nyquist sampling criteria has not been met and spectral overlap occurs. The spectral overlap is termed aliasing and occurs when fS...
The spectral density function describes the distribution of eigenvalues of a given problem. Networks may be characterized by the condition number of the normal equation matrix. The spectral condition number is defined as the largest eigenvalue divided by the smallest eigenvalue. Most often this number...
Direct Sequence/Spread-Spectrum (DSSS) signals are characterized by a wide bandwidth and a low-power spectral density. These characteristics make them very... G Cardarilli,L Nunzio,R Fazzolari,... 被引量: 0发表: 2017年 Cross Spectral Density Analysis for Various Codes Suitable for Spread Spec...
Device to device communication for the next generation is also gaining significant attention due to its ability to enhance the spectral efficiency of a system. In D2D communication there is a D2D pair formation between the active users in a specific geographical area and they can directly ...