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This paper presents millimeter wave (mmWave) measurements in an indoor environment. The high demands for the future applications in the 5G system require more capacity. In the microwave band below 6 GHz, most of the available bands are occupied; hence, the microwave band above 6 GHz and mmWave band can be used for the 5G system to cover the bandwidth required for all 5G applications. In this paper, the propagation characteristics at three different bands above 6 GHz (19, 28, and 38 GHz) are investigated in an indoor corridor environment for line of sight (LOS) and non‐LOS (NLOS) scenarios. Five different path loss models are studied for this environment, namely, close‐in (CI) free space path loss, floating‐intercept (FI), frequency attenuation (FA) path loss, alpha‐beta‐gamma (ABG), and close‐in free space reference distance with frequency weighting (CIF) models. Important statistical …