Analysis of adjacent channel interference using distribution function for V2X communication systems in the 5.9‐GHz band for ITS

摘要

Many use cases have been presented on providing convenience and safety for vehicles employing wireless access in vehicular environments and long‐term evolution communication technologies. As the 70‐MHz bandwidth in the 5.9‐GHz band is allocated as an intelligent transportation system (ITS) service, there exists the issue that vehicular communication systems should not interfere with each other during their usage. Numerous studies have been conducted on adjacent interfering channels, but there is insufficient research on vehicular communication systems in the ITS band. In this paper, we analyze the interference channel performance between communication systems using distribution functions. Two types of scenarios comprising adjacent channel interference are defined. In each scenario, a combination of an aggressor and victim network is categorized into four test cases. The minimum requirements and conditions to meet a 10% packet error rate are analyzed in terms of outage probability, packet error rate, and throughput for different transmission rates. This paper presents an adjacent channel interference ratio and communication coverage to obtain a satisfactory performance. To date, limited research has been conducted on adjacent channel interference (ACI) for intelligent transportation systems (ITS), with regard to the coverage and distribution of the desired and interfering vehicle‐to‐vehicle (V2X) signals in the 5.9‐GHz band. The communication range varies with the applications and communication environment. Therefore, the analysis of ACI is important when adjacent channels have varying communication ranges. This study analyzes the performance of vehicles in two adjacent channels based on the communication range, distribution, and RF characteristics.