TitleHybrid precoders and combiners for mmWave MIMO systems with per-antenna power constraints
Publication TypeConference Paper
Year of Publication2016
AuthorsLópez-Valcarce, R, González-Prelcic, N, Rusu, C, Heath, Jr, RW
Conference Name IEEE Global Telecommunications Conf. (GLOBECOM)
Keywordscompass, mmWave
Abstract This paper considers the design of hybrid precodersand combiners for mmWave MIMO systems with per-antennapower constraints and the additional limitations introduced bythe phase-shifting network in the analog processing stage. Previoushybrid designs were obtained using a total power constraint,but in practical implementations per-antenna constraints aremore realistic, specially at mmWave, given the large number ofpower amplifiers used in the transmit array. Assuming perfectchannel knowledge, we obtain first an approximation to the alldigitalsolution for the precoder and the combiner given theper-antenna constraints. Then, we develop a new method for thedesign of the hybrid precoder and combiner which attempts tomatch such all-digital approximation. Simulation results showthe effectiveness of the proposed approach, which performs closeto the all-digital solution.