Accurate Millimeter-wave Carrier Frequency Offset Measurement Using the Six-port Interferometric Technique
Bibliographic record
Abstract
A V-band front-end based on a six-port interferometer is proposed for the accurate measurement of Carrier Frequency Offset (CFO) and carrier recovery in a wireless system. The interferometer uses power readings for amplitude, phase or frequency comparison between its two RF inputs. If the circuit is carefully designed, this low-cost technique allows precise phase and frequency measurements without the need of any calibration. Furthermore, the ability to work with a reduced local oscillator (LO) power is a significant advantage of interferometry versus conventional mixing techniques. Measurements performed at 64 GHz show a resolution of a few Hz, as low as permitted by today's DC coupled measurement equipment. A CFO of 3 Hz, equivalent with a Doppler shift corresponding to a velocity of 7 mm/s, has been successfully measured.
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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 | 0.001 | 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 | 0.000 |
| 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".