Efficient FDTD analysis of antenna-channel interaction via macromodeling
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Bibliographic record
Abstract
The use of the finite-difference time-domain (FDTD) method for wireless channel modeling has gained significant popularity due to its simple implementation and its ability to extract wideband responses from a single simulation run. FDTD based techniques, despite providing accurate channel characterizations, have often employed point sources in their studies, mainly due to the difficulty in modeling fine geometrical details or features inherent in antennas into a discrete spatial domain. The underlying influences of the antenna on wave propagation and in the case of multiple antenna systems, the issue of mutual coupling between the antenna elements have thus been disregarded. With the growing interest in small antenna-based MIMO communication systems, this paper presents a possible approach for the efficient space-time analysis of such systems in wireless channels. Specifically, a suitable technique for representing antennas in terms of their FDTD-compatible macromodels and their subsequent incorporation into realistic channel models is proposed. This work is an extension which deals with a reciprocity-based approach for macromodeling minimum scattering antennas.
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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 | 0.001 |
| 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) | 0.001 | 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 it