RIS-Enabled Transmitter Design for Joint Radar and Communication
Emanuele Grossi, Marco Lops, Luca Venturino
TL;DR
This paper proposes a RIS-based dual-function transmitter for integrated radar and communication systems, optimizing waveforms and phase shifts to achieve desired radiation patterns and improve detection and data transmission.
Contribution
It introduces a novel RIS-enabled transmitter design that jointly optimizes source waveforms and RIS phase shifts for ISAC systems, addressing a key challenge in efficient beampattern control.
Findings
Enhanced radar detection probability
Improved data transmission rate
Effective joint waveform and phase shift optimization
Abstract
Achieving efficient and cost-effective transmit beampattern control for integrated sensing and communication (ISAC) systems is a significant challenge. This paper addresses this by proposing a dual-function radar communication (DFRC) transmitter based on a reconfigurable intelligent surface (RIS) illuminated by a limited number of active sources. We formulate and solve the joint design of source waveforms and RIS phase shifts to match a desired space-frequency radiation pattern, and we evaluate the resulting ISAC system's performance in terms of radar detection probability and data transmission rate. Numerical results demonstrate the promising capabilities of this RIS-enabled transmitter for ISAC applications.
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