Questions tagged [upsampling]
The upsampling tag has no usage guidance.
9
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Correct OFDM oversampling method
I need to oversample my OFDM signal, however I have issues understanding which OFDM oversampling method is the recommended one.
First method :
Before taking the IFFT, the OFDM subcarriers are padded ...
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3D interpolation of a volume with irregular upsampling
Given a collection of 2D slices which as a whole corresponds to a 3D volume (medical image of an organ), I only take specific slices (i.e. I replace the ones I dont want with zeros) and so, I end up ...
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Is this proof valid?
Consider a discrete-time sequence, $y[n]$, defined as:
$$y[n] = \frac 12 x[n] + \frac 12 (-1)^n\: x[n]$$
where $x[n]$ is another discrete-time sequence.
The DTFT of $y[n]$ defined as $Y(e^{j\omega}) = ...
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Pre- or post-filtering for image doubling
I am doubling the resolution of images by bilinear resampling (which amounts to averaging). I seem to understand that this should be combined to a sharpening filter for better quality of the ...
user67664
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Oversampling of OFDM post-IFFT frame
I would like to build IQ radio waveform - first part - synchronisation sequence (ZC) and second part, OFDM frame with Cyclic Prefix(after IFFT).
I want to to oversample ZC sequence at transmitter, and ...
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Applying 2D Sinc Interpolation for Upsampling in the Fourier Domain (DFT / FFT)
Related to The Proper Way to Do Sinc Upsampling (DFT Upsampling) for Uniformly Sampled Discrete Signals with Finite Number of Samples, how can one apply Sinc upsampling in the DFT / FFT domain for a ...
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In repeated upsampleing and downsampling by 2, how do i calculate the output Y(z)?
For example, if X(z) -> {downsampled by 2} -> {upsampled by 2} -> Y(z)
Given that: X(z) = 1+z^2+z^12+z^19
How do I compute the value of Y(z)?
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Cosine modulated impulse response
How do we show $y_0(n) = y_1(n)$
when $h_k[n] = h[n] \cos(\frac{2\pi}{L} k n )$
user52384
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How to calculate the upsampling rate (sample per symbol) for a recorded raw IQ .wav file?
I am not familiar with raw IQ wave files. For tetra-1 signal, the bit rate is $36$ k bps (or $18$ k as the symbol rate). If the Fs saved in the .wav file is $48000$ Hz, what should be the SPS (sample ...
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