# Deterministic Propagation Modeling for Intelligent Vehicle Communication in Smart Cities
## 5 Measurements Results
### Throughput Analysis in V2V and V2I Links  
During the experiments, the analysis of the traffic exchange shows that best results correspond to the communication V2V, when comparing V2V and V2I. This is due to the orientation of the antennas, which were placed, with the aid of a magnet, perpendicular to the streetlight, as depicted previously in Figure 5e-g. This causes the loss of messages since it was not possible to get good coupling between the antennas located on the roof of the vehicles and those located in the streetlights. This fact does not prevent communication, but the quality of the link decreases markedly. In the same way, the differences of the link communication when vehicles and infrastructure are located on the same side of the avenue, and when they are not, have been analyzed. The orientation of the vehicles affects several transmission parameters: relative speed, distance and obstacles. During experimentation, the distance between each vehicle was higher when they were located on the same side of the avenue than when they were in opposite lanes (see Figure 2), and the presence of garbage containers between the cars \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Description** & **SCV** & **n*** & **Lognormal** & **Gamma** & **Nakagami** & **Weibull** \\ \hline \hline
**(a)** S1: (x: 1 to 60) m & 1.126 & 3.099 & F/1.817 & T/8.029 & T/19.552 & T/7.485 \\ CDF-GOF: AD * (Hypothesis test/statistic) & 1.126 & 3.099 & 0.072 & 1.210 & 0.391 & 1.058 \\ Input parameter: Shape & & & & & & \\ \hline
**(b)** S2: (x: 60 to 120) m & 1.715 & 2.345 & T/3.951 & T/3.558 & T/23.013 & F/1.936 \\ AD (Hypothesis test/statistic) & & & 1.136 & 0.842 & 0.289 & 0.870 \\ \hline
**(c)** S3: (x: 120 to 146) m & 8.473 & 2.449 & F/1.051 & T/20.25 & T/44.186 & T/7.9071 \\ AD (Hypothesis test/statistic) & & & 3.466 & 0.396 & 0.139 & 0.541 \\ \hline
**(d)** S1, S2, S3, S4 (x: 1 to 146) m & 34.268 & 2.764 & T/11.261 & T/Inf & T/Inf & T/70.462 \\ AD (Hypothesis test/statistic) & & & & & & \\ \hline
**(e)** S5, S6, S7 (x: 146 to 290) m & 27.526 & 3.041 & T/0.313 & T/4.544 & T/46.353 & T/2.495 \\ AD (Hypothesis test/statistic) & & & & & & \\ \hline
**(f)** S6: (x:146 to 170) m & 6.691 & 2.377 & F/0.878 & T/19.259 & T/46.353 & T/8.437 \\ AD (Hypothesis test/statistic) & & & 3.987 & 0.479 & 0.161 & 0.609 \\ \hline
**(g)** S7: (x 170 to 230) m & 1.826 & 2.284 & F/1.639 & T/7.946 & T/34.403 & T/4.809 \\ AD (Hypothesis test/statistic) & & & 1.507 & 0.827 & 0.282 & 0.855 \\ \hline
**(h)** S8 (x: 230 to 290) m & 1.225 & 3.610 & F/1.342 & T/4.658 & T/18.919 & T/4.668 \\ AD (Hypothesis test/statistic) & & & 0.013 & 1.149 & 0.370 & 1.029 \\ \hline AD *: Anderson-Darling test, SCV** (Squared Coefficient of Variation), n *** (Path loss exponent). T = True, F = False (for hypothesis test) & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Data dispersion measurements and GOF test for TX1. also disturbed the communication. Three communication threads were used (3, 5 and 7) to analyze if the use of simultaneous transmission of several threads affects the success of the communication. However, as can be observed from Figure 15, it has no visible relevance. Thus, the rest of the figures will just show the average values. Figure 15 depicts the effective throughput transferred by each thread, according to the type of communication (V2V or V2I) and the bandwidth (10 or 20 Mbps) of each thread. As can be observed, the number of Kbytes transferred is quite similar. Each communication has a duration of 300 s.  
It is observed from Figure 15 that the throughput varies over time. That is due to the passage of vehicles along the avenue. The larger the vehicles (trucks and buses), the longer the duration of the fading and the greater of its intensity. Figure 16 shows the average values of the Kbytes transferred, while Figure 17 shows the average effective throughput received. As it can be observed from Figure 16, the location on the same side of the antennas (either V2V or V2I) results in a lower data transmission rate.