SPC07-3: An Iterative QR-SIC Receiver for Concatenated Space Frequency Coding Schemes in Severe Multipath Channels
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Bibliographic record
Abstract
This paper studies an efficient receiver design for concatenated space-frequency coded orthogonal frequency division multiplexing (OFDM) systems under severe multipath channels. The proposed receiver utilizes a turbo-like iterative QR decomposition based successive interference cancellation (QR-SIC) algorithm that exploits both spatial and frequency diversity inherent in the multipath multiple-input multiple output (MIMO) channel. Performance of the proposed receiver is evaluated via Monte Carlo simulations. Our results show that the proposed iterative QR-SIC scheme attains excellent performance improvements in severe multipath fading channels. In addition, the proposed scheme attains manageable receiver complexity since we only consider a maximum of 2-3 iterations.
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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 | 0.001 |
| 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