# Auxiliary Beam Pair Enabled AoD and AoA Estimation in Closed-Loop Large-Scale Millimeter-Wave MIMO Systems

> Research article (IEEE Transactions on Wireless Communications, 2017) · cited 138× · AI/ML

**Wikidata**: [openalex:W2534496827](https://www.wikidata.org/wiki/openalex:W2534496827)  
**Source**: https://4ort.xyz/entity/auxiliary-beam-pair-enabled-aod-and-aoa-estimation-in-closed-loop-large-scale-millimeter-wave-mimo-systems