FPGA implementation of a fully digital demodulation technique for biomedical application
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Widely used demodulation technique in EIT/EIS systems is the direct conversion (zero-IF) method in which measured single tone current (or voltage) signal is mixed with source waveform at the same frequency, so that the magnitude and phase of the measured current (or voltage) can be determined after a low pass filtering stage. This is especially true for an EIS system which might need to operate in a low frequency range as small as 100 Hz. In the system presented here, the amplitude and phase of the IF signal can be measured after digitizing the signal by an ADC in digital domain with transferring the IF signal to the baseband (zero frequency). In this system, a lowpass FIR filter and a variable frequency digital oscillator have been used. In our designed system there is no need for zero crossing technique which suffers from jitter noise and delay of different path, for signal mixing. We have implemented digital demodulation part of system on a Virtex-4 LX25 FPGA from Xilinx.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it