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A 2-D precoding scheme is proposed for 3-D massive multiple-input multiple-output (MMIMO) systems for efficiently exploiting the 2-D antenna array of the base station. Specifically, by exploiting the Kronecker structure of the 3-D MIMO channel matrix, the transmit precoding operation is divided into elevation-domain precoding and azimuth-domain precoding. Explicitly, in contrast to the existing beamforming...
In this paper, a two-dimensional location-based channel estimation algorithm is proposed for massive full-dimensional multiple-input multiple-output (FD-MIMO) systems with intracell pilot reuse, which serves more users using the same timefrequency resource and significantly improves the sum capacity of users compared with conventional schemes. By utilizing the two-dimensional antenna arrays, different...
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