Design and Implementation of an Ultrasonic Link for Concurrent Telemetry of Multiple Data Streams to Implantable Biomedical Microsystems
Bibliographic record
Abstract
This paper reports on the design, implementation, and test of an ultrasonic data telemetry link. The link benefits from the combination of on-off keying (00K) modulation and frequency-division multiplexing (FDM) in order to enhance the telemetry data rate, while using regular transducers. As a result of using the FDM scheme, multiple data streams will be telemetered via the link concurrently. Each one of the data streams is OOK-modulated with a specific sub-carrier frequency. Covering the breadth of the effective bandwidth of the link, the subcarrier frequencies are chosen to be located at the local maxima of the link frequency response. To further increase the data rate, the OOK-modulated data streams are amplitude-equalized to compensate for the non-flat frequency response of the link. Designed using two ultrasonic transducers with a resonance frequency of 1MHz placed with a spacing of 3cm, a prototype link with 8 concurrent sub-channels was developed, characterized, and tested for a bit rate of 120kbps.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".