Precoding for mmWave massive MIMO
X. Gao*; L. Dai*; Z. Gao†; T. Xie*; Z. Wang* ⁎ Tsinghua University, Beijing, China† Beijing Institute of Technology, Beijing, China
Abstract
Precoding plays an indispensable role in multiple-input multiple-output (MIMO) systems because it can compensate the path loss and eliminate the interference. While the fundamentals of precoding are the same regardless of carrier frequency, signal processing in millimeter-wave (mmWave) massive MIMO systems is subject to a set of nontrivial practical constraints, leading to different hardware architecture. This means that traditional precoding is no longer suitable, and we need to explore some new precoding schemes for mmWave massive MIMO systems.
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