FMCW Chirp Diversity for Mutual Interference Mitigation in Short-range Automotive Radars under Realistic Traffic Model

Authors

  • Md Anowar Hossain Electrical Engineering Department King Saud University, 11421, Riyadh, Saudi Arabia
  • Ibrahim Elshafiey Electrical Engineering Department King Saud University, 11421, Riyadh, Saudi Arabia
  • Abdulhameed Al-Sanie Electrical Engineering Department King Saud University, 11421, Riyadh, Saudi Arabia

Keywords:

Automotive radar, FMCW chirp, mutual interference, waveform diversity

Abstract

With the worldwide harmonized frequency allocation for automotive radars and increasing rate of modern vehicles equipped with radar systems, mutual interference among automotive radars is becoming a key problem. This paper presents a novel approach for mutual interference mitigation based on diverse waveform design by imposing time and frequency diversity to frequency modulated continuous wave (FMCW) chirp signal considering 79 GHz short-range automotive radar. Performance of the proposed waveform in terms of auto-correlation and cross-correlation has been investigated using software-defined radio (SDR) transceiver and measurement results are provided. The system concept is validated by developing an automotive radar channel model considering a realistic 3D road traffic scenario using a ray-tracing tool. Theoretical analysis and simulation examples of different mutual interference scenarios in an automotive environment are provided to evaluate the effectiveness of the proposed method. Results show that the proposed waveform is able to detect the targets of interest successfully while mitigating the false targets in mutual interference environments.

Downloads

Download data is not yet available.

References

B. H. Ku, P. Schmalenberg, O. Inac, O. D. Gurbuz, J. S. Lee, K. Shiozaki, and G. M. Rebeiz, “A 77-81 GHz 16-element phased-array receiver with ±50° beam scanning for advanced automotive radars,” IEEE Trans. on Microwave Theory and Techniques, vol. 62, pp. 2823-2832, 2014.

N. Sönmez, F. Tokan, and N. Türker Tokan, “Double lens antennas in millimeter-wave automotive radar sensors,” Applied Computational Electromagnetics Society (ACES), vol. 32, no. 10, pp. 901-907, 2017.

V. Jain, F. Tzeng, L. Zhou, and P. Heydari, “A single-chip dual-band 77-81 GHz BiCMOS transceiver for automotive radars,” IEEE Journal of Solid-State Circuits, vol. 44, pp. 3469-3485, 2009.

G. Brooker, “Mutual interference of millimeterwave radar systems,” IEEE Trans. on Electromagnetic Compatibility, vol. 49, pp. 170-181, 2007.

Y. Han, E. Ekici, H. Kremo, and O. Altintas, “Automotive radar and communications sharing of the 79-GHz band,” ACM Int. Workshop on Smart, Autonomous, and Connected Vehicular Systems and Services, pp. 6-13, 2016.

S. Heuel, “Automotive radar sensors must address interference issues,” Microwave Journal, vol. 59, pp. 22-36, 2016.

A. Al-Hourani, R. J. Evans, S. Kandeepan, B. Moran, and H. Eltom, “Stochastic geometry methods for modeling automotive radar interference,” IEEE Trans. on Intelligent Transportation Systems, vol. 19, no. 2, pp. 333-344, 2018.

T. Schipper, M. Harter, T. Mahler, O. Kern, and T. Zwick, “Discussion of the operating range of frequency modulated radars in the presence of interference,” Int. Journal of Microwave and Wireless Technologies, vol. 6, pp. 371-378, 2014.

Y. Kim, “Identification of FMCW radar in mutual interference environments using frequency ramp modulation,” European Conf. on Antennas and Propagation (EuCAP), pp. 1-3, 2016.

Q. Nguyen, M. Park, Y. Kim, and F. Bien, “77 GHz waveform generator with multiple frequency shift keying modulation for multitarget detection automotive radar applications,” Electronics Letters, vol. 51, pp. 595-596, 2015.

C. Kärnfelt, A. Péden, A. Bazzi, G. E. H. Shhadé, M. Abbas, and T. Chonavel, “77 GHz ACC radar simulation platform,” Int. Conf. on Intelligent Transport Systems Telecommunications (ITST), pp. 209-214, 2009.

G. Galati and G. Pavan, “Noise radar technology as an interference prevention method,” Journal of Electrical and Computer Engineering, vol. 2013, p. 4, 2013.

B. Kim and J. Lee, “Mutual interference-resilient vehicular spread spectrum radar using ZCZ code,” IEMEK Journal of Embedded Systems and Applications, vol. 11, pp. 29-37, 2016.

Remcom. Wireless InSite. Available at: http:// www.remcom.com/wireless-insite

S. Kim, I. Paek, and M. Ka, “Simulation and test results of triangular fast ramp FMCW waveform,” IEEE Radar Conf., pp. 1-4, 2013.

H. L. Van Trees, “Optimum array processing, part IV of detection, estimation, and modulation theory,” EISBN: 0-471-09390-4, pp. 362-382, 2002.

Downloads

Published

2021-07-16

How to Cite

[1]
Md Anowar Hossain, Ibrahim Elshafiey, and Abdulhameed Al-Sanie, “FMCW Chirp Diversity for Mutual Interference Mitigation in Short-range Automotive Radars under Realistic Traffic Model”, ACES Journal, vol. 34, no. 01, pp. 82–92, Jul. 2021.

Issue

Section

Articles