matlab-design-ofdm-system
Read BEFORE writing any code that builds or simulates OFDM systems. The default MATLAB patterns for OFDM (e.g., direct ifft/fft, awgn with 0 dBW power, missing symOffset) produce subtly incorrect results — always use ofdmmod/ofdmdemod instead of direct IFFT/FFT. This skill specifies the correct calling conventions for ofdmmod, ofdmdemod, ofdmChannelResponse, ofdmEqualize, and critical anti-patterns that must be avoided. Use when building OFDM transmitters or receivers, allocating subcarriers and guard bands, inserting pilots, computing SNR for OFDM, configuring fading channels (Rayleigh/Rician
npx skills add matlab/matlab-agentic-toolkit --skill matlab-design-ofdm-system --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# OFDM System Design ## When To Use Use this skill when the user wants to build a custom (non-standard) OFDM transmitter/receiver, configure subcarrier allocation, add noise to OFDM signals, equalize OFDM through fading channels, implement synchronization, or add LDPC coding. ## When Not To Use Do NOT use this skill for standards-specific OFDM (use 5G Toolbox for 5G NR, WLAN Toolbox for Wi-Fi, LTE Toolbox for 4G/LTE, Bluetooth Toolbox for Bluetooth, Satellite Communications Toolbox for satellite links). ## GATE — Ask Before Coding If the user's request does not specify or unambiguously imply ALL of the following, STOP and ask before generating any code. Present unclear items as a numbered list and ask whether the user wants to: (a) specify values, (b) have you derive them from other constraints (e.g., CP from delay spread, SCS from Doppler), or (c) use typical defaults. Do not assume defaults. Do not proceed until the user responds. 1. **OFDM parameters** — FFT size, CP length, subcarrier spacing, subcarrier allocation 2. **Channel model** — AWGN only, fading with perfect CSI, or fading with pilot-based estimation 3. **Pilots** — needed for channel estimation or phase tracking? 4.
- When To Use
- When Not To Use
- GATE — Ask Before Coding
- Must-Follow Rules
- Key Functions
- Subcarrier Allocation
- Basic OFDM Tx/Rx (AWGN)
- SNR Handling for OFDM
- Critical Gotchas
- awgn(x, snr, 0) is WRONG for OFDM
- symOffset is required in ofdmdemod
- Modulator/demodulator input must be a column vector for single-stream
- DC subcarrier index
- ofdmEqualize hEst dimensions
What does the matlab-design-ofdm-system skill do?
Read BEFORE writing any code that builds or simulates OFDM systems. The default MATLAB patterns for OFDM (e.g., direct ifft/fft, awgn with 0 dBW power, missing symOffset) produce subtly incorrect results — always use ofdmmod/ofdmdemod instead of direct IFFT/FFT. This skill specifies the correct calling conventions for ofdmmod, ofdmdemod, ofdmChannelResponse, ofdmEqualize, and critical anti-patterns that must be avoided. Use when building OFDM transmitters or receivers, allocating subcarriers and guard bands, inserting pilots, computing SNR for OFDM, configuring fading channels (Rayleigh/Rician
How do I install it?
Run `npx skills add matlab/matlab-agentic-toolkit --skill matlab-design-ofdm-system --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From matlab/matlab-agentic-toolkit, a repository with 868 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.