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 |
顯示於類別: | 期刊論文 |