Secure Transmission in OFDM Systems by Using Time Domain Scrambling
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In order to improve the confidentiality and security of orthogonal frequency division multiplexing (OFDM) systems, a physical layer security enhancement scheme by using time domain scrambling techniques is proposed in this paper. The approach is based on secretly scrambling the sample sequence within each time domain OFDM symbol, which is equivalent to constellation transformation over each subcarrier in the frequency domain. Consequently, the unique signal characteristics of the standardized OFDM transmission can be removed. The efficacy of the security enhancement is analyzed by means of the secrecy capacity. Moreover, related simulation results under the AWGN and the Rayleigh channel models indicate that our proposed scheme can improve the system secrecy significantly and the corresponding system performance will not be degraded.
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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