Multi-user decision-feedback space-time equalization and diversity reception
Bibliographic record
Abstract
This paper investigates optimum infinite-length multi-user decision-feedback space-time equalization implemented with cross-feedback filters in order to remove not only post-cursor ISI but also post-cursor CCI. Closed-form expressions are derived for the optimal feedforward and feedback filters as well as the minimum achievable MSE (mean-square error) as a function of channel spectra for a one-antenna system in the ideal case, i.e. where cross-feedback filters are available for all interferers. Those results are then generalized with the help of a single-channel equivalent model to the multiple-antenna (space-time) case. Monte Carlo simulation results are provided comparing the MMSE obtainable with multi-user DFE, with standard DFE, with linear equalization (LE) and the matched filter bound in Rayleigh fading channels.
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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".