--- title: A Survey on Channel Modeling for Vehicular Communications date: 2023-06-13 authors: Kunal Manish Mehta year: 2019 DOI: tags: [thesis/A/1st-significant thesis/A/read] aliases: --- # A survey on channel modeling for vehicular communications Trucks have attenuation which can be greater than 20dB - larger than personal vehicles Path loss exponent is 1.6-2.9 on highways ### DSRC 1 ctrl channel 6 service channels with 10MHz BW and 5 MHz guard band. ### General V2X specs Distance usually 10-500m Main idea of [channel model](../../../../Concepts/General/channel%20model.md) is usability of the model and amount of geographic information available #objsidenote may need to look at geographic information available for BWSC route ## Chapter 2 Other vehicles might need to be a relay agent between two vehicles. Wifi standard 802.11p used for V2X - 5.9GHz. This can be used in an adverse environment. [Road Side units (RSU)](../../../../Concepts/General/Road%20Side%20units%20(RSU).md) ## Chapter 3 Path loss exponent is 1.6-2.9 on highways (references [11] and [12]). Mean delay spread is 140-400ns Used part of San Diego state uni to use as the environment. ##### 3.1.1.1 Link Types Atennas on top for V2V. ##### 3.1.1.2 Vehicle Types Trucks have attenuation which can be greater than 20dB - larger than personal vehicles #question What is the attenuation of a personal vehicle? #answer check: Geometry-based vehicle to vehicle channel modeling for large-scale simulation and Impact of a truck as an obstacle on vehicle-to-vehicle communications in rural and highway scenarios ##### 3.1.1.3 Objects Mobile objects are priority on highway. Non-line of sight channels show larger root mean square delay spreads than line of sight (LOS). ### 3.2 Classification of Channel models #### 3.2.1 Propagation Mechanisms 1. Varying path loss 2. high doppler shift 3. Frequency selective fading (caused by static/mobile objects) Use [Piecemeal modeling](../../../../Concepts/General/Piecemeal%20modeling.md) #### 3.2.2 Large scale propagation [Log-distance path loss model](../../../../Concepts/General/Log-distance%20path%20loss%20model.md) Other options exist, including a [two-way ground reflection model](../../../../Concepts/General/two-way%20ground%20reflection%20model.md) #### 3.2.3 Small-scale fading ## References 1. [A-SURVEY-ON-CHANNEL-MODELING-FOR-VEHICULAR-COMMUNICATIONS](Spaces/University/Thesis/literature%20review/1st%20-%20significant/A-SURVEY-ON-CHANNEL-MODELING-FOR-VEHICULAR-COMMUNICATIONS.pdf) 2. K. M. Mehta, “A Survey on Channel Modeling for Vehicular Communications,” A survey on channel modeling for vehicular communications | SDSUnbound, https://digitallibrary.sdsu.edu/islandora/object/sdsu%3A28652 (accessed Jul. 25, 2023). 3.