A Directivity-Dependent Rician K-Factor Model for Indoor Industrial Channels
Physics-based closed-form model cuts design time for 75 GHz factory networks.
A new physics-based model, published on arXiv, directly connects antenna directivity to key channel parameters in large indoor industrial settings. The work derives a closed-form expression showing that the Rician K-factor—the ratio of line-of-sight to scattered power—scales with total transmit-plus-receive antenna gain through a single reverberance factor. It also establishes a general identity linking RMS delay spread, mean excess delay, and K-factor, with the exponential power delay profile as a special case.
Validated via ray-tracing simulations across 100 random link placements in a 57,300 m³ industrial hall at 75 GHz, the model provides compact design rules. Engineers can now map a target delay spread directly to the minimum required antenna gain, enabling faster, more reliable deployment of wideband mmWave links in factories and warehouses.
- Closed-form model relates antenna gain to Rician K-factor via a single reverberance factor
- Validated with 100 random link placements in a 57,300 m³ industrial hall at 75 GHz
- Provides design rules to map target RMS delay spread to minimum antenna gain for mmWave links
Why It Matters
Enables faster design of reliable mmWave industrial networks by linking antenna choice directly to channel performance.