Ultra-wideband (UWB) communications channel measurements – a tutorial review
Bibliographic record
Abstract
This paper presents a comprehensive overview of ultra-wideband (UWB) measurements of all empirical data available on various fading properties of indoor radiowave communication channels. Our focus is on the essential propagation channel parameters mostly used in the physics-based models. This overview is based on more than 50 measurement campaigns from 24 working groups in different countries including North-American, European and Asian, and more than 100 references (in total) mostly books and journals articles on the UWB propagation channels. The measurement campaigns utilise different multipath propagation measurement techniques in various environments office, laboratory, corridor, open areas (classroom, reading room, auditorium) and residential building to measure the propagation channel metrics including power-loss, temporal and spatial characteristics and frequency characteristics. This tutorial overview is supported by an integrated summary on measurement results on each category. These analytic sum...
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How this classification was reachedexpand
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".