@conference {818, title = {Dictionary-free Hybrid Precoders and Combiners for mmWave MIMO Systems}, booktitle = {IEEE Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC)}, year = {2015}, month = {06/2015}, publisher = {IEEE}, organization = {IEEE}, address = {Stockholm, Sweden}, keywords = {compass, mmWave}, author = {Roi M{\'e}ndez-Rial and Cristian Rusu and Nuria Gonz{\'a}lez-Prelcic and Robert W. Heath Jr.} }