標題: Interference avoidance and cancellation in automotive OFDM radar networks
作者: Lin, Yu-Chien
Lee, Ta-Sung
Lin, Chia-Hung
交大名義發表
電信工程研究所
National Chiao Tung University
Institute of Communications Engineering
關鍵字: OFDM radars;Millimeter-wave radars;Interference avoidance;Interference cancellation;Logical channel selection
公開日期: 1-一月-1970
摘要: With increasing use of millimeter-wave radars in driving safety applications, interference between vehicles becomes a significant issue. Moreover, oscillator imperfections and relative velocity effects induce inter-carrier interference (ICI) owing to frequency offset, leading to degradation of target detection. In this paper, time-frequency resources are divided into several orthogonal logical channels according to the time-frequency division (TFD) scheme. We propose a two-stage interference mitigation method. First, an interference avoidance technique is designed for each piece of radar equipment (RE) to select logical channels with the least ICI. Then, each RE reconstructs and cancels interference according to estimated parameters based on the proposed interference cancellation technique. Computer simulations reveal that the proposed interference avoidance technique can approximately achieve the performance of ground truth, especially when the number of interferers is small. In addition, noise enhancement effects can be effectively mitigated through the proposed cancellation technique.
URI: http://dx.doi.org/10.1007/s11265-020-01539-w
http://hdl.handle.net/11536/154871
ISSN: 1939-8018
DOI: 10.1007/s11265-020-01539-w
期刊: JOURNAL OF SIGNAL PROCESSING SYSTEMS FOR SIGNAL IMAGE AND VIDEO TECHNOLOGY
起始頁: 0
結束頁: 0
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