Phase Forward Cooperative Communications with Antenna Selection and Continuous Phase Modulation
Bibliographic record
Abstract
In this paper we proposed two extensions to the recently proposed Phase Forward (PF) relaying strategy for cooperative communication. One extension is the replacement of CPFSK modulation by the more practical Gaussian filtered minimum shift keying (GMSK) modulation scheme. The second extension is the incorporation of antenna selection at the relay. Semi-analytical expressions for the bit error probabilities (BEP) of the two extension systems are derived in the paper. It is found that PF-GMSK can attain similar BEP performance as PF-CPFSK, despite the fact that it is a more bandwidth efficient modulation. Furthermore, it is better than GMSK with decode-and-forward (DF). It is also found that PF, with antenna selection at the relay, can actually outperform amplify-and-forward (AF) without antenna selection in a time-selective fading environment. It also leads to a lower outage probability when compared to time-diversity in an operating environment with shadowing.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".