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Record W2123639244 · doi:10.1109/freq.2007.4319290

Ultra low cost base station timing module

2007· article· en· W2123639244 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueProceedings of the IEEE International Frequency Control Symposium · 2007
Typearticle
Languageen
FieldPhysics and Astronomy
TopicScientific Research and Discoveries
Canadian institutionsNortel (Canada)
Fundersnot available
KeywordsBase stationSynchronization (alternating current)Electrical engineeringComputer sciencePower (physics)Electronic engineeringEngineeringTelecommunicationsPhysics

Abstract

fetched live from OpenAlex

An adaptive frequency stabilization approach is presented which enables a low cost single oven oscillator, having an absolute frequency stability variation over temperature of 4 ppb/75C and ageing rate of 1 ppb/day to meet the time synchronization requirements of WiMAX and CDMA base stations during 24 hour holdover operation. It is demonstrated that for typical temperature variations experienced within the base station the local base station clock can be maintained within 1 micro-second of universal time coordinates for holdover time frames in excess of 24 hours. The stabilization approach enables the oscillator frequency stability to be decreased by 10 times with respect to temperature and 20 times with respect to ageing relative to incumbent solutions. Such a result is world class and has immediate cost and size benefit to the timing module. It is demonstrated that the power consumption of the base station oscillator can be reduced from that required by a DOCXO of 9.6 W to that of the OCXO at 3.5 W under worst case warm up conditions. In addition the supply voltage can be dropped from 12 V to 5 V removing the requirement for specialized power regulation systems. Reduction in the power supply requirements results in a reduction in the overall timing module footprint enabling migration of time base circuit from a stand alone module to its integration onto the radio modem card. System simulation, control loop algorithm implementation and hardware performance results are detailed demonstrating the working validity of the approach for next generation wireless base station timing modules.

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.

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 categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.173
Threshold uncertainty score0.372

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.015
GPT teacher head0.276
Teacher spread0.261 · 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