Doppler Shift Tolerance of Accumulation and Outer Coding in MIMO-PMCW Radar
Doppler Shift Tolerance of Accumulation and Outer Coding in MIMO-PMCW Radar
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DOI：
10.1109/lmwc.2021.3123691
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发表时间：
2021-11-12
影响因子：
3
通讯作者：
Zwick, Thomas
中科院分区：
文献类型：
--
作者：
de Oliveira, Lucas Giroto;Bekker, Elizabeth;Zwick, Thomas
相位调制连续波 (PMCW) 被广泛认为是一种有前景的雷达系统调制方案，例如在高度自动化驾驶 (HAD) 应用中。尽管所谓的外编码可以有效地实现基于 PMCW 的雷达系统的多输入多输出 (MIMO) 操作，但这种复用方法中产生的处理增益可能会随着多普勒频移的增加而降低。在此背景下，这封信介绍了归一化多普勒频移参数，该参数能够预测 MIMO-PMCW 雷达系统中多普勒频移引起的处理增益下降。最后，仿真和测量结果证实了所引入参数在设计 MIMO-PMCW 雷达中的有用性。
Phase-modulated continuous wave (PMCW) has been widely regarded as a promising modulation scheme for radar systems, e.g., in highly automated driving (HAD) applications. Although the so-called outer coding can efficiently enable the multiple-input-multiple-output (MIMO) operation of PMCW-based radar systems, the yielded processing gain in this multiplexing approach may be reduced at increasing Doppler shifts. In this context, this letter introduces a normalized Doppler shift parameter that enables predicting the Doppler-shift-induced degradation of the processing gain in a MIMO-PMCW radar system. Finally, simulation and measurement results confirm the usefulness of the introduced parameter in desigining MIMO-PMCW radars.