Exploiting dual-antenna diversity for phase cancellation in augmented RFID system
Bibliographic record
Abstract
In this paper, we propose a dual antenna technique to lessen the phase cancellation effect in an augmented ultra high frequency (UHF) radio frequency identification (RFID) system. In the augmented RFID system, a recently developed semi-passive RFID component (sensatag) has the functionality to sense the backscattering communication between a reader and a passive tag being within its proximity. This unique functionality of sensatag allows for the development of proximity-based indoor localization solutions with high localization accuracy. However, due to the phase difference between RFID reader's continuous carrier wave (CW) and tag's backscattering signal, the backscattered signal from the tag received by the sensatag could be significantly attenuated. We call this destructive effect as phase cancellation. This problem exists in passive RFID system because the RFID reader transmits CW during tag's communication. Taking advantage of the spatial diversity of dual antenna technique, the probability of phase cancellation effect could be reduced. In addition, we present an UHF RFID system simulation framework, that includes the model of the sensatag. Then we demonstrate the performance of the dual antenna technique with data obtained from computer simulation.
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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".