Fading Improves Connectivity in Vehicular Ad-hoc Networks

10/08/2019
by   Samar Elaraby, et al.
0

Connectivity analysis is a crucial metric for network performance in vehicular ad-hoc networks (VANETs). Although VANET connectivity has been intensively studied and investigated under channel models without fading for their simplicity, the connectivity probability provided by these studies does not mimic the real-world scenarios that suffer from channel impairments. However, the connectivity probability was too challenging to be caught by a closed formula due to the emerging complexity associated with the randomness in a fading channel. In this paper, we precisely estimate the connectivity probability using a proposed graph-based algorithm. The results prove that Rayleigh-fading channels reinforce the connectivity compared to no-fading models at the same level of transmitting power and vehicle densities. Using simulations and analysis, we thoroughly investigate these outcomes and their causes providing closed formulas for single-link connectivity and an upper bound for vehicle connectivity under fading conditions. We also exploit the numeric results of the proposed algorithm to deduce an upper bound for the VANET connectivity probability under Rayleigh-fading channels.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
03/19/2023

Connectivity Analysis of Directed Highway VANETs using Graph Theory

Graph theory is a promising approach in handling the problem of estimati...
research
07/29/2022

A Modified Union Bound on Symbol Error Probability for Fading Channels

In this paper, we propose a new upper bound on the error probability per...
research
05/29/2020

Two-Hop Connectivity to the Roadside in a VANET Under the Random Connection Model

We compute the expected number of cars that have at least one two-hop pa...
research
04/19/2018

Connectivity of Ad Hoc Wireless Networks with Node Faults

Connectivity of wireless sensor networks (WSNs) is a fundamental global ...
research
09/17/2018

Doppler Spectrum Analysis of a Roadside Scatterer Model for Vehicle-to-Vehicle Channels: An Indirect Method

In vehicle-to-vehicle (V2V) channels, such roadside scatterers (RSSs) as...
research
12/20/2019

Statistical Properties of Transmissions Subject to Rayleigh Fading and Ornstein-Uhlenbeck Mobility

In this paper, we derive closed-form expressions for significant statist...
research
09/03/2018

PEP Analysis of Selective Decode and Forward Protocol over Keyhole Fading

We provide a closed form upper bound formulation for the average pairwis...

Please sign up or login with your details

Forgot password? Click here to reset