# Channel Training & Estimation for Reconfigurable Intelligent Surfaces: Exposition of Principles, Approaches, and Open Problems

> Research article (IEEE Access, 2023) · cited 27× · AI/ML

**Wikidata**: [openalex:W4316021951](https://www.wikidata.org/wiki/openalex:W4316021951)  
**Source**: https://4ort.xyz/entity/channel-training-amp-estimation-for-reconfigurable-intelligent-surfaces-exposition-of-principles-approaches-and-open-pro