%0 Journal Article
%T 认知无线电协同传输在车联网中的应用及性能分析<br>Application and Performance analysis of Cognitive Radio Cooperative Transmission in Internet of Vehicles
%A 刘阳
%A 黎锁平
%J Hans Journal of Wireless Communications
%P 1-7
%@ 2163-3991
%D 2021
%I Hans Publishing
%R 10.12677/HJWC.2021.111001
%X <div style=\"text-align:justify;\">
	随着通信技术与智能天线技术的快速发展，车联网得到广泛关注与研究。但频谱匮乏、通信覆盖范围有限一直困扰着车联网的发展与应用，本文将认知无线电协同传输引入到车联网系统中，通过协同传输在不增加发射功率的前提下扩大了传输范围。通过对信干噪比的分析与推导，计算出了端到端传输的中断概率；数值模拟结果表明相较于直接通信，采用认知无线电协同传输能够有效降低中断概率，提升车联网的性能。<br />
With the rapid development of communication and smart antenna technology, the Internet of Vehicles (IoV) has received extensive attention and research. The application of IoV is hampered by lack of spectrum and limited communication coverage. In this paper, cognitive radio cooperative transmission is introduced into the IoV system to expand the transmission range without increasing the transmission power. The outage probability of end-to-end transmission is calculated by analyzing and deducing the signal to interference plus noise ratio. Numerical simulation results show that compared with direct communication, the use of cognitive radio cooperative transmission can effectively reduce the outage probability and improve the performance of the IoV.
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%K 车联网，认知无线电，协同传输，中断概率<br>Internet of Vehicles
%K Cognitive Radio
%K Cooperative Transmission
%K Outage Probability
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=41571