Interference Characterization and Power Optimization for Automotive Radar With Directional Antenna

被引：15
作者：
Chu, Ping [1 ,2 ]
Zhang, J. Andrew [3 ]
Wang, Xiaoxiang [1 ]
Fei, Zesong [4 ]
Fang, Gengfa [3 ]
Wang, Dongyu [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Beijing 100786, Peoples R China
[2] Univ Technol Sydney, Sydney, NSW 2007, Australia
[3] Univ Technol Sydney, Global Big Data Technol Ctr, Ultimo, NSW 2007, Australia
[4] Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China
来源：
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2020年 / 69卷 / 04期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Automotive radars; radar-to-radar interference; stochastic geometry; interference modelling; power allocation; STOCHASTIC GEOMETRY; MUTUAL INTERFERENCE; ALLOCATION STRATEGY; SYSTEMS; NETWORKS; DESIGN;
D O I：
10.1109/TVT.2020.2968929
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Wide deployment of radar sensors on automotive vehicles can potentially lead to a severe interference problem. Such interference has been characterized without considering directional antenna patterns, which could lead to results significantly larger than the actual ones. In this paper, we study the mean power of effective echo signals and interference, by considering both front- and side- mounted radars equipped with directional antennas. We employ the stochastic geometry method to characterize the randomness of vehicles and hence radars in both two-lane and multilane scenarios, and derive closed-form expressions for the mean interference by approximating the radiation pattern by Gaussian waveforms. Simulation results are shown to match the analytical results very well, and insights are obtained for the impact of radar parameters on interference. Based on the interference analysis, we aim to minimize the total transmission power of each vehicle with constraints on the required signal to interference and noise ratio. Anoptimal solution is obtained based on linear programming techniques and corroborated by simulation results.
引用
收藏
页码：3703 / 3716
页数：14
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