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Trying to Understand Phasing Method for AM SSB Demod
Started by 6 months ago●5 replies●latest reply 6 months ago●197 viewsGood morning, all! I've been poring over Rick Lyon's paper on the phased method demodulator for SSB AM, specifically this particular block diagram:I've recreated...
Started by Tom Lehrer died Saturday at age 97. He wrote and performed "Wernher Von Braun" and other satirical songs. But his main gig was as a mathematician. Here is...
How to parallelize polyphase FIR resampling filters
Started by 6 years ago●14 replies●latest reply 7 months ago●1640 viewsI am struggling to find a good reference for implementing parallel rational-ratio FIR resampling filters. By "parallel", I mean a high-throughput hardware filter...
FMCW RF up-convserion doesn't land at the designated carrier
Started by 8 months ago●3 replies●latest reply 8 months ago●163 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
Started by 8 months ago●3 replies●latest reply 8 months ago●177 viewsAssuming 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
Started by 9 months ago●18 replies●latest reply 8 months ago●293 viewsI 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
Started by 9 months ago●11 replies●latest reply 9 months ago●200 viewsI have a single frequency (100kHz) magnetic wave (known power) signal measured by three, orthogonally sensitive, placed sensors (coils in x,y,z direction). The...
Started by 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
Started by 9 months ago●10 replies●latest reply 9 months ago●244 viewsIn 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
Started by 11 months ago●4 replies●latest reply 9 months ago●223 viewsHello 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/)....
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