# Hierarchical Codebook-Based Beam Training for RIS-Assisted mmWave Communication Systems

> Research article (IEEE Transactions on Communications, 2023) · cited 70× · AI/ML

**Wikidata**: [openalex:W4323022492](https://www.wikidata.org/wiki/openalex:W4323022492)  
**Source**: https://4ort.xyz/entity/hierarchical-codebook-based-beam-training-for-ris-assisted-mmwave-communication-systems