Experimental characterization of outdoor microcellular quasi-static channels in the UHF and SHF bands
Bibliographic record
Abstract
In order to explore design alternatives for point-to-multipoint high rate data transmission systems in various UHF and SHF bands, experimental measurements of radio propagation were made in urban and suburban areas. This paper reports on extensive continuous wave (CW) and wideband measurements performed at four carrier frequencies: 1.44275 GHz, 6.7 GHz, 14.72 GHz and 22.025 GHz. Measurements were carried out in the Montreal metropolitan and suburban areas with both transmitter and receiver stationary. The transmitter was located outside on the rooftop of a high rise building and the receiver inside another building. The receiver was then moved for each new set of measurements such that a whole room was covered in a grid-like fashion. Results from the temporal experiments show, that for the suburban area, the amplitude distributions are lognormal-distributed. The urban area presents more Ricean-distributed amplitude data. The data for the spatially-distributed case also showed that for the suburban and urban areas, the local means of the fluctuations are well described by a Nakagami distribution.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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 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".