Design and validation of a small-scale 5.9 GHz DSRC system for vehicular communication
Bibliographic record
Abstract
Despite being recently ratified, the IEEE 802.11p Dedicated Short Range Communication (DSRC) 5.9 GHz standard for vehicle-to-vehicle communication still does not have a large number of supported radios available. This paper outlines the development of an 802.11p communication system with adjustable transmission power. The key components of the system were a Linux-powered embedded system and a 5.9 GHz mini-PCI RF transceiver. The software driver controlling the RF transceiver had been developed to facilitate communication in the DSRC frequency range of 5.85 GHz to 5.92 GHz. A spectrum analyzer was used to validate the central operating frequency of 5.9 GHz. Additionally, an indoor test confirmed communication between two units at a distance of 15 m. In a vehicle-to-vehicle test, packet loss of less than 1% was demonstrated when two vehicles traveled together at 60 km/h at a distance of approximately 150 m. In the vehicle-to-infrastructure test, an average distance of 405 m was measured.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".