# LTE Signals for Device-Free Crowd Density Estimation Through CSI Secant Set and SVD

> Research article (IEEE Access, 2019) · cited 19× · AI/ML

**Wikidata**: [openalex:W2980740849](https://www.wikidata.org/wiki/openalex:W2980740849)  
**Source**: https://4ort.xyz/entity/lte-signals-for-device-free-crowd-density-estimation-through-csi-secant-set-and-svd