Channel estimation for 5.9 GHz dedicated short-range communications receiver in wireless access vehicular environments
Why this work is in the frame
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Bibliographic record
Abstract
A channel estimation scheme for the design of a 5.9 GHz dedicated short-range communications receiver for the purpose of vehicle-to-vehicle and vehicle-to-roadside communications is proposed. The receiver is based on the popular wireless local area network standard IEEE 802.11a, but with extended symbol duration. On the basis of analyses and simulations, the proposed receiver has superior design characteristics for the harsh channel conditions of wireless access vehicular environments. The performance of the proposed scheme is tested under varying velocity, signal-to-noise ratios, transmission modes, packet lengths and channel properties. The proposed design improves the overall packet error rate performance, enabling the system to achieve higher data rates and larger packet lengths at high relative velocities. Simulation results show slight improvements in the quadrature phase-shift keying transmission, whereas there is substantial improvement in the cases of 16- and 64-ary quadrature amplitude modulations compared to conventional design.
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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 | 0.001 | 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 | 0.001 |
| Open science | 0.004 | 0.001 |
| 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 it