TY - JOUR T1 - Distributed Precoding Systems in Multi-Gateway Multibeam Satellites: Regularization and Coarse Beamforming JF - IEEE Transactions on Wireless Communication Y1 - 2018 A1 - Carlos Mosquera A1 - R. López-Valcarce A1 - Tomás Ramírez A1 - Vahid Joroughi ER -