Observing the impact of the metasurface size on both the required throughput can give design guidelines for HSFs. Metasurface size N x M: The number of unit cells has an impact on the absolute amount of transmitted messages. The traces are obtained and classified as a function of the following parameters: A diff operation between adjacent unit cell state matrices describes which unit cells need to be changed and, given our assumptions, which unit cells will receive packets from the gateway.įor each type of movement, we collect traces that describe the time instant at which packets are generated as well as their intended destinations. To model the gateway, we only obtain the unit cell state matrices in steps corresponding to the angular step parameter. Iterating over such calculations, we can obtain successive unit cell state matrices corresponding to a given movement with any angular granularity. The methods described above allow to obtain the matrix of unit cell states for any incidence and reflection conditions. Finally, we take the unit cell state that yields the phase that is closer to Ф„ ш, this is, we perform the nretasurface coding. (8.7) to calculate the phase Ф тп of each unit cell. (8.6) to obtain the phase gradients and then Eq. More specifically, we first evaluate the incidence and reflection angles given the positions of the HSF, the illumination source, and the moving target (mobility model). MATLAB scripts are employed to simulate the movement and to obtain the corresponding unit cell state matrices. Figure 8.17 illustrates our methodology to obtain the traffic within the metasurface.