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[EN] This paper analyses a simulation of performance in an intra-wagon environment based on four scenarios. The 28 GHz and the 37 GHz bands are assessed for the use of 5G millimeter (mmWave) communications. The main objective was to analyses different multiple-input single-output orthogonal frequency division multiplexing (MISO-OFDM) techniques such as Hadamard quasiorthogonal space-time block code (HQSTBC) and transmit beamforming to analyze the throughput achieved as a function of the signal-to-noise ratio (SNR) applied. Starting from a measurement campaign, the performance is analyzed by scenario, applied band and in terms of the two algorithms used. In addition, the results are simulated with 4 and 8 transmitting antennas., Este trabajo ha sido financiado en parte por los proyectos PID2019-107885GB-C33 y TEC2017-86779-C2-2-R (AEI/FEDER, UE). Agradecer a Julia Iserte Villalba y Francisco M. Brox Lopez (personal de FGV) por facilitar la campaña de medidas.

[EN] This paper presents an analysis of the massive MIMO channel in an indoor picocell with a high number of active user terminals. The analysis is based on the results of a measurement campaign carried out in the 3.2 to 4 GHz band in a scenario of reduced size, in which users (up to 20) are placed in an orderly manner. In order to evaluate the performance of the resulting massive MIMO channel, results concerning both the sum capacity as well as the spectral efficiency are included. Furthermore and concerning the channel spectral efficiency, an analysis showing the spread and differences between the individual contributions of each active user is reported and discussed., Este trabajo ha sido financiado por los proyectos del Plan Estatal de Investigación Científica y Técnica y de Innovación TEC2017-86779-C2-1-R y TEC2017-86779-C2-2-R.