Tag
physical-layer
- Jun 26, 2025 OFDM Subcarrier Spacing, Guard Intervals, and Channel Width Why a wide Wi-Fi channel is divided into many narrow subcarriers, what the cyclic prefix protects against, and how spacing changed in later amendments. networking
- Mar 7, 2023 Rate Adaptation and How a Station Chooses Its MCS How a transmitter infers channel quality it cannot measure, why the retry count is a noisy signal, and what the probe-then-fallback strategies cost. networking