Capacity of MIMO system using polarimetric antenna elements
Bibliographic record
Abstract
Exploitation of polarization for MIMO system is a promising approach to increase multiple parallel channels, particularly for space-limited mobile and base-stations. For this purpose, the use of polarimetric antenna elements has been studied by both theoretical studies and experiment [1]-[4]. The studies, however, present different conclusion on the number of possible independent parallel channels from polarization diversity. In this paper, we study the use of polarimetric antennas under different scattering environments by using a three dimensional (3D) polarized channel modelling in which the Fisher-Bingham (FB5) distribution was used to model direction of scatterers in 3D space. We found that due to a significant correlation between electric and magnetic dipoles, only four independent channels are obtained in fully scattering condition and that in order to achieve full capacity, a certain separation between them is required. Our results can be used for optimisation of array antenna design using polarimetric antenna elements.
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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".