Application of active current mirrors to improve the speed of analog decoder circuits
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Bibliographic record
Abstract
Current-mirrors are widely used in the blocks of analog decoder circuits based on the sum-product algorithm. The simple current mirrors, using diode-connected input devices that traditionally have been used are limited in speed when their inputs are loaded with long wires. We present a block diagram for a large (6, 3) LDPC code and an estimation for the largest possible wiring capacitance in this decoder. We show that when active current mirrors are used on the inputs of the equality nodes, their speed is enhanced. The power and speed for a seven-input equality node are simulated with the basic mirrors and with the modified current-mirror circuits. We show through simulations in STMicroelectronics CMOS 90 nm technology and with a supply voltage of 0.4 V that the power/speed ratio for a 7-input equality node can be improved by approximately 50% with the enhanced topology.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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