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Record W7008493529

Caractérisation à grande échelle d'un signal 60
\nGHz dans un environnement minier confiné

2012· dissertation· fr· W7008493529 on OpenAlexaboutno aff

Bibliographic record

VenueDepositum (Université du Québec en Abitibi-Témiscamingue) · 2012
Typedissertation
Languagefr
FieldEngineering
TopicMillimeter-Wave Propagation and Modeling
Canadian institutionsnot available
Fundersnot available
KeywordsObstacleSIGNAL (programming language)
DOInot available

Abstract

fetched live from OpenAlex

Les télécommunications sans fil ont connu un grand intérêt et succès depuis
\nplusieurs années grâce à leur facilité de déploiement par rapport aux
\ntélécommunications filaires, leur support de la mobilité des nœuds
\ncommuniquant et leur souplesse d'utilisation par les usagers.
\nLe problème actuel des télécommunications sans fil est de pouvoir assurer
\ndes débits élevés de transmission capable de supporter des applications
\nfortement gourmande en bande passante. Pour relever ces défis plusieurs
\nsolutions sont proposées. Parmi elle la montée en fréquence vers le spectre
\ndes ondes millimétriques. Cette approche est à la base de notre étude qui porte
\nun intérêt particulier à l'étude de la propagation d 'un signal 60 GHz dans un
\ndans un milieu confiné en mettant en œuvre un sondeur de canal pour ses
\nondes millimétriques.
\nLes résultats des mesures à grande échelle d'un signal à 60 GHZ sont étudiés
\ndans plusieurs scénarios : visibilité directe, et en visibilité obstruée en utilisant
\ncomme obstacle un être humain, dans un environnement de laboratoire et dans un
\nmilieu souterrain minier. Les résultats montrent une différence considérable dans
\nl'atténuation de canal pour ces différents scénarios.
\nCe travail a été effectué en partie au laboratoire de recherche en
\ncommunications souterraine LRTCS à Val-d'Or, Canada et pour la partie
\nexpérimentation sous terre dans la mine de CANMET. Wireless communications have been a great interest and success for several
\nyears because of their infrastructure simplicity compared to wired
\ntelecommunications, their important terminal mobility, and also their flexibility
\nof operation by users.
\nThe current problem of wireless telecommunications is being able to provide
\nhigh transmission rates capable of supporting intensive applications consuming
\nbandwidth. To meet these challenges, several solutions are proposed. Among them
\nthe rise in frequency to millimetre wave spectrum. This approach is the basis of
\nour study that has a particular interest in the study of signal propagation in 60
\nGHz in a confined environment by implementing a channel sounder for its
\nmillimetre wave.
\nThe measurement results of a large-scale signal at 60 GHz are studied in
\nseveral scenarios: Line of Sight and obstructed Line of sight using a human being
\nas an obstacle in a laboratory environment and in an underground mining
\nenvironment. The results show a considerable difference in the channel attenuation
\nfor these different scenarios.
\nThis work was done in part at the Underground Communications Research
\nLaboratory LRTCS in Val-d'Or, Canada and the part of experimentation in
\nunderground CANMET mine.
\n

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.534
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0010.002
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.000
Science and technology studies0.0010.000
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0040.001

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.

Opus teacher head0.005
GPT teacher head0.166
Teacher spread0.161 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2012
Admission routes1
Has abstractyes

Explore more

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