Path loss characterization in vehicular environments under LOS and NLOS conditions at 5.9 GHz

Abstract

Abstract-Based on a narrowband channel measurement campaign, this paper will characterize the path loss in vehicular environments under line-of-sight (LOS) and non-LOS (NLOS) at 5.9 GHz. Based on a linear slope model, values of the path loss exponent and the standard deviation of the shadowing will be reported in three different environments, i.e., urban with high road traffic density, urban with moderate/low traffic density, and expressway. The results presented here can be incorporated in an easy way into vehicular networks (VANETs) simulators to develop, evaluate and validate new protocols and systems architectures configurations under more realistic propagation conditions.

Spatial Characterization of Radio Propagation Channel in Urban Vehicle-to-Infrastructure Environments to Support WSNs Deployment

“…In general, these results are coherent with those obtained in Figure 2 and reported in the literature [ 46 , 49 ]. PLE ranges from 2.07 to 3.25 for LOS and QLOS, and 3.64 to 4.27 for NLOS; higher values have been derived from building obstruction.…”

A Grid-Based Coverage Analysis of Urban mmWave Vehicular Ad Hoc Networks

“…4 present the SINR threshold dependence of the coverage probability for various d and for mmWave communications, LOS-NLOS and LOS-always, and VANET. The latter comparison was made by assigning m = 1, lower path loss exponentials α L and α N [11], 10 MHz bandwidth, equal lobe alignment probabilities and assigning G = g = 1 due to omnidirectionality. These results show, that in dense vehicular communications networks, due to large α L and α N , mmWave communications significantly outperform lower carrier frequency communications protocols, such as VANET, because of the reduced effect of nearby interferers.…”

“…(d) in(11) is the Probability Generating Functional (PGFL) of PPP. 2p i λ t (Q(rh;αL,rmin,λ −1 )+Q(rh;αN,λ −1 ,r ma x )) (12)…”

V2V radio channel properties at urban intersection and ramp on urban viaduct at 5.9 GHz

“…Moreover, the unavailability of LOS caused by surroundings, such as buildings, obstructions or other larger vehicles, is also worth investing in safety applications of vehicular communication. Because non‐LOS (NLOS) case will create different propagation phenomena and it will have a severe effect on channel characteristics [7, 8]. Thus, Karedal et al [2] compared the difference of V2V channel characteristics between LOS and NLOS cases based on the four measurements.…”