Live RF Image Transmission using OFDM with RPi and PlutoSDR
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
Orthogonal frequency-division multiplexing (OFDM) is a multi-carrier digital communication technique which addresses digital communication problems like intersymbol interference (ISI), low data rates, and inter-carrier interference (ICI). It uses multiple low data rate carriers to assemble a high data rate communication system. Each low data rate carrier has enough long symbol periods which then eliminates ISI. Orthogonality allows each carrier frequency to be closely spaced, although overlapped, without ICI. The contribution of this paper is to show that real-time OFDM RF communications is possible and assess its performance. This was achieved by integrating several embedded platforms: a light-weight processor, web camera, and software define radio using the Mathworks MATLAB environment. This is an efficient way to transmit live images or video feeds for monitoring and surveillance purposes. The work focused on transmitting live images at a constant rate from the web camera to the software defined radio, which relayed it to another software defined radio at a remote location.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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