hts have been considered (i.e., h = 2 m, h = 3 m and h = 4 m), corresponding to potentially different distribution of transceivers (either for static infrastructure as well as coupled to the pallets). Significant fast fading components can be observed Implementation of Context-Aware Environments with Massive IoT Systems [dBm] [dBm] [dBm] X-axis (m) X-axis (m) X-axis (m) Fig. 8.14 Estimation of distribution of received power levels for the indoor warehouse scenario, considering frequency of operation of f@3.5 GHz, for constant height horizontal planes at a cut-plane height of 1.5m in the case of loaded pallets within the scenario. Three different transmitter antenna locations have been depicted, to illustrate varying channel characteristics owing to topological variations within the scenario Receiver power level path x=12.5m Vertical Planes x=23m [dBm] [dBm] Y-axis (m) Y-axis (m) [dBm] Y-axis (m) Fig. 8.15 Estimation of distribution of received power levels for the indoor warehouse scenario, considering frequencies of operation f@868 MHz, f@2.4GHz, and f@3.5 GHz, for vertical planes in the case of unloaded pallets within the scenario. The location of the vertical planes is shown in the upper image of this panel I. Picallo et al. [dBm] [dBm] Y-axis (m) Y-axis (m) [dBm] Y-axis (m) Fig. 8.16 Estimation of distribution of received power levels for the indoor warehouse scenario, considering frequency of operation of f@3.5 GHz, for vertical in the case of loaded pallets within the scenario. Three different transmitter antenna locations have been depicted, to illustrate varying channel characteristics owing to topological variations within the scenario Y-axis (m) Y-axis (m) Fig. 8.17 Estimation of distribution of received power levels for the indoor warehouse scenario, considering frequency of operation of f@3.5 GHz, for linear TX-RX radials in the case of unloaded (left) and the case of loaded pallets (right) within the scenario, considering three different heights of operation (h = 2 m, h = 3 m, and h = 4 m) in the res