# Doppler-Resilient 802.11ad-Based Ultra-Short Range Automotive Joint Radar-Communications System

## TL;DR

This paper introduces a Doppler-resilient joint radar-communications system based on IEEE 802.11ad, enhancing automotive object detection and false alarm reduction at high velocities using Prouhet-Thue-Morse sequences.

## Contribution

It proposes a novel Doppler-resilient processing method for 802.11ad-based JRC systems using Prouhet-Thue-Morse sequences, improving detection performance in automotive scenarios.

## Key findings

- 2.5% reduction in false alarm probability at low SNR
- Enhanced peak-to-sidelobe dynamic range up to ±144 km/hr
- Detailed micro-feature detection of automotive objects

## Abstract

We present an ultra-short range IEEE 802.11ad-based automotive joint radar-communications (JRC) framework, wherein we improve the radar's Doppler resilience by incorporating Prouhet-Thue-Morse sequences in the preamble. The proposed processing reveals detailed micro-features of common automotive objects verified through extended scattering center models of animated pedestrian, bicycle, and car targets. Numerical experiments demonstrate $2.5$% reduction in the probability-of-false-alarm at low signal-to-noise-ratios and improvement in the peak-to-sidelobe level dynamic range up to Doppler velocities of $\pm144$ km/hr over conventional 802.11ad JRC.