Joint Radar-Communications Performance Inner Bounds: Data versus Estimation Information Rates

TL;DR

This paper derives inner bounds on the performance of a joint radar-communications system, quantifying achievable data and estimation information rates when both operate in the same frequency band, challenging traditional interference mitigation.

Contribution

It introduces a novel framework for analyzing joint radar and communications performance using information rate bounds, integrating radar estimation and data transmission metrics.

Findings

Derived achievable bounds for joint system performance

Proposed a new radar estimation information rate parameterization

Demonstrated the potential for integrated radar-communications operation

Abstract

We investigate cooperative radar and communications signaling. Each system typically considers the other system a source of interference. Consequently, the traditional solution is to isolate the two systems spectrally or spatially. By considering the radar and communications operations to be a single joint system, we derive inner or achievable performance bounds on a receiver that observes communications and radar return in the same frequency allocation. Bounds on performance of the joint system are measured in terms of data information rate for communications and a novel radar estimation information rate parameterization for the radar.