# Two-Timescale Design for Reconfigurable Intelligent Surface-Aided Massive MIMO Systems With Imperfect CSI

> Research article (IEEE Transactions on Information Theory, 2022) · cited 151× · AI/ML

**Wikidata**: [openalex:W4312763750](https://www.wikidata.org/wiki/openalex:W4312763750)  
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