Feedback-based digital predistorter for multi-bit delta-sigma transmitter
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
This paper proposes a feedback-based digital predistortion technique for multi-bit delta-sigma transmitters. This topology is based on a 3-bit delta-sigma modulator with a look-up table model of the power amplifier in the feedback loop. This feedback-based digital predistortion technique avoids the reverse modeling step found in conventional digital predistortion. Since the feedback loop is fully digitally implemented, the proposed architecture is not limited in terms of bandwidth, as is the case for conventional Cartesian feedback. System-level simulations and measurements have been carried out for evaluation of the performance of the proposed topology. It has been tested using a WiMAX signal, and the signal-to-noise-and-distortion ratio of the signal was improved by more than 20 dB and 10 dB in the simulation and measurement scenarios, respectively.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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