Dual-band linear filter assisted envelope memory polynomial for linearizing multi-band power amplifiers
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Bibliographic record
Abstract
This paper proposes a dual-band linear filter assisted envelope memory polynomial model (EMP) devised for analog-RF predistortion (ARFPD) systems. The proposed model consists of two finite-impulse-response (FIR) filters preceding a newly formulated dual-band EMP block in forming the pruned 2D-FIR-EMP model. A linear estimation algorithm is devised to identify the coefficients of the proposed pruned 2D-FIR-EMP model. Furthermore, a proof of concept of the digitally-assisted dual-band ARFPD system based on two RF vector multipliers (RF-VM) built using off-the-shelf (OTS) components is presented. Measurement results obtained using the proposed pruned 2D-FIR-EMP proof-of-concept predistorter has demonstrated excellent linearization results in compensating for the distortions exhibited by a gallium nitride Doherty power amplifier driven by dual-band signals.
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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) | 0.001 | 0.000 |
Machine scores (provisional)
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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