Dual-band receiver using passive six-port down-conversion technique suitable for multi-standards and SDR applications
Bibliographic record
Abstract
In this paper, a receiver topology using passive microwave network was investigated. A dual-band wireless receiver, which is capable of working for multiple standards over multiple communication bands was designed and tested. The system was implemented at both WiMAX standards (2.4 GHz and 3.6 GHz). The input and local oscillator input were generated using a signal generator, the analog-to-digital conversion was accomplished using power detection diodes and a four-channel oscilloscope, and the signal processing was performed using Matlab. The created system was able to successfully down convert binary phase shift keying, quadrature phase shift keying, 8 phase shift keying and 16 phase shift keying modulated digital signals. The measured SNDR values were equal to 24 dB and 27 dB at the carrier frequencies 2.4 GHz and 3.6 GHz respectively for signal with QPSK modulation and 5 MHz bandwidth.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.002 |
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".