@article{TUW-281114, author = {Schwarz, Stefan and Rupp, Markus and Wesemann, Stefan}, title = {Grassmannian Product Codebooks for Limited Feedback Massive MIMO with Two-Tier Precoding}, journal = {IEEE Journal of Selected Topics in Signal Processing}, year = {2019}, volume = {13}, number = {5}, pages = {1119--1135}, url = {https://publik.tuwien.ac.at/files/publik_281114.pdf}, doi = {10.1109/JSTSP.2019.2930890}, keywords = {Limited feedback, Grassmannian quantization, massive MIMO, product codebook, FDD, FD-MIMO} }