Bistatic ISAC: Practical Challenges and Solutions

TL;DR

This paper explores practical challenges and solutions for implementing bistatic integrated sensing and communication in 6G networks, focusing on waveform design, synchronization, and system performance.

Contribution

It provides a comprehensive analysis of system design, signal processing techniques, and simulation results for bistatic ISAC in 6G, addressing hardware impairments and open deployment challenges.

Findings

Effective over-the-air synchronization methods

Simulation demonstrates feasible sensing and communication performance

Identification of key open challenges for future 6G ISAC deployments

Abstract

This article presents and discusses challenges and solutions for practical issues in bistatic integrated sensing and communication (ISAC) in 6G networks. Considering orthogonal frequency-division multiplexing as the adopted waveform, a discussion on system design aiming to achieve both a desired sensing key performance indicators and limit the impact of hardware impairments is presented. In addition, signal processing techniques to enable over-the-air synchronization and generation of periodograms with range, Doppler shift, and angular information are discussed. Simulation results are then presented for a cellular-based ISAC scenario considering system parameterization compliant to current 5G and, finally, a discussion on open challenges for future deployments is presented.