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FMCW RF up-convserion doesn't land at the designated carrier
Started by 11 months ago●3 replies●latest reply 11 months ago●188 viewsI created a simple FMCW sweep using MATLAB in baseband, BW = 100MHz:sweepTime = 1e-3; % 1 ms sweep
BW = 1e8; %100 MHz;
fs = 2e8;% 200 MHz sample rate
% FMCW waveform:...
Dither question, TPDF vs periodic oscillator
Assuming my DAC is 1 million samples per second 12-bit, with the goal of increasing the effective number of bits beyond 12 bit at the expense of reduced sample...
Bandwidth of the Goertzel algorithm
I needed to determine the 3 and 6 dB points of the Goertzel algorithm. While I found many posts here that addressed bandwidth indirectly, they didn’t specifically...
Efficient triaxial sampling of a single frequency signal
I have a single frequency (100kHz) magnetic wave (known power) signal measured by three, orthogonally sensitive, placed sensors (coils in x,y,z direction). The...
The OFDM receiver front end operates on a real signal from the antenna. The receiver's IQMixer both downconverts the received signal to baseband and transforms the...
Carrier frequency offset (CFO) in OFDM with the real part of IFFT
In the IEEE 1902.2 narrow-band OFDM PLC standard, the IFFT is performed but only the real parts are taken for the transmission while discarding the imaginary parts...
Help with Shannon-Nyquist Reconstruction Artifacts in Interactive DSP Tool
Hello DSPrelated community,I'm developing an interactive web application for learning DSP concepts as part of a university project (project overview: https://thierrydutoit.github.io/iDSP/)....
A Query about "Improvements to the Sliding DFT Algorithm"
Started by 1 year ago●7 replies●latest reply 1 year ago●345 viewsHi all!
My first post here! Long time lurker first time poster.
This one is kinda specifically directed at @RickLyons but happy for anyone to answer.
I am reading: https://www.researchgate.net/publication/352874961......
When performing an FFT, modifying the magnitude spectrum in some arbitrary way, and then applying an inverse FFT, how should I handle circular convolution? How can...
Instantaneous frequency direction of human speech
Started by 1 year ago●7 replies●latest reply 1 year ago●240 viewsFor SSB (Single Side Band) modulation I use Prosch’s [1] IIR
all-pass filters as per below:For a single Cosine tone, with a frequency from the range
above, the...
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