Questions tagged [signal-energy]

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Bandwith of a energy signal

I'm studying for my finals , and I'm struggling with finding bandwidths. I have this energy spectral density : Ψ(f)=rect(f) , and I need to find the bandwith, 3 dB band and the band with 90 % power. ...
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62 views

Finding the Energy & Power of a Composition of Odd and Even Signal

Given two CT signals $x_1(t)$ (even signal) and $x_2(t)$ (odd signal). If $x_1(t)+x_2(t)$ is an even signal then what is the energy and power of $x_2(t)$. My Attempt $\int \limits _{-\infty}^{+\infty}$...
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35 views

What is the “Energy” equivalent of the Magnitude Spectrum

I have a semantic issue regarding the discrete spectrum $X[k]$ of a time domain signal with limited length $x[n]$, so we're talking about the FFT. Now, when I what to compare the bandwidth and ...
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1answer
67 views

Analytically determine a PSD from a transient function

This question is related to a series of questions I have asked about the units of PSD and ESDs. I include it as a separate question as it may have worth in isolation. As I understand it to compute ...
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0answers
21 views

Effect of filtering on Energy of a Digital Signal

I am trying to detect (not remove) noise from the digital signal to get meaningful information out of it. The signal I need is in the frequency range of 0.1 Hz to 10 Hz. Anything beyond this is just ...
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0answers
195 views

Parseval's Theorm and Effective Bandwidth

This question says that RMS bandwidth (effective bandwidth) is defined based on the carrier frequency of a signal. This makes intuitive sense to me that the carrier frequency shouldn't determine the ...
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1answer
19 views

Calculating SNR & Es/No and placing noise onto a signal

I have a signal power of -12 dBW from a 16 QAM signal after the first RRC. I want to create a channel SNR of 30 dB I calculate my noise power from this, i.e. its -42 dBW and make the noise to add to ...
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0answers
20 views

Computing Energy of sparsly sampled spherical function

I'm trying to understand the following paper: http://www.cse.cuhk.edu.hk/~ttwong/papers/shfit/shfit.pdf On page 8, the energy of the function Ec is mentioned. How ...
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0answers
22 views

Energy or power signal for continuous signal

I have solved $w(t) = 1dt$ and determined it as power but when $w(t) =\Pi\left(\frac{t}{T_0}\right)$ it is energy.
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0answers
22 views

How to compute the energy of a NON-STATIONARY (transient) random discrete-time signal

When computing the energy of a NON-STATIONARY (transient) random discrete-time signal $x(n)$, does it make more sense to compute the energy as $ E=\sum_1^N{x^2(n)}$ over all the $N$ samples or does ...
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1answer
244 views

select local maxima in energy signal

I have the following plot which represents the RMS energy of a signal over time. The energy goes up and down with varying maximum amplitude. I want to keep the portions of the signal where the energy ...
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1answer
155 views

Power and Energy spectral densities of a linear system

Here is a schematic of my desired circuit. I want to calculate Power and Energy that the load dissipates during 0< t<8 You can see my attempts: Therefore How can find load's energy in ...
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1answer
114 views

Energy detector based sensing

In the this paper, A Survey of Spectrum Sensing Algorithms for Cognitive Radio Applications, what is $L_f L_t$ in equations $(8)$ and $(9)$ as shown below? \begin{align} P_F&=1-\Gamma\left(...