# Coordinated Beamforming and Artificial Noise in the Downlink Secure Multi-cell MIMO Systems under Imperfect CSI

> Research article (IEEE Wireless Communications Letters, 2020) · cited 13× · AI/ML

**Wikidata**: [openalex:W3011729188](https://www.wikidata.org/wiki/openalex:W3011729188)  
**Source**: https://4ort.xyz/entity/coordinated-beamforming-and-artificial-noise-in-the-downlink-secure-multi-cell-mimo-systems-under-imperfect-csi