Fault Tolerance of Quantized Unitary Precoders
Why this work is in the frame
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Bibliographic record
Abstract
Precoding based on channel state information (CSI) can help improve the performance of orthogonal space-time block codes (OSTBCs). Optimum precoders require a fairly detailed description of the channel singular vectors motivating the use of limited feedback communications to send some quantized form of the precoder to the transmitter. To this end, the singular value decomposition (SVD) is the fundamental step in extracting the singular vectors of the channel. In this paper we revisit a limited feedback technique based on the quantization of the dominant right singular vector of the channel matrix. Lifting the assumption of perfect channel estimation at the receiver, we investigate channels affected by Gaussian noise, line of sight component, and phase uncertainty. We also assume a more general channel model that incorporates channel correlations. Our simulations show that the quantized nature of the precoders provides the system with resiliency to such impairments.
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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 | 0.000 |
| 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 it