@article{EURECOM+4505, author = {Ghanem, Samah A. M and Cottatellucci, Laura}, title = {D2D cooperation to avoid instantaneous feedback in nonreciprocal massive MIMO systems}, journal = {IEEE MMTC E-Letters, Special issue on Novel approaches and technologies for 5G, 2015}, year = {2015}, note = {© 2015 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.}, }