A Codebook Approach to Spillover Cancellation in Multi-Antenna Radar and Communication Systems

Abstract

This paper considers the problem of radar sensing under the influence of strong spillover. The problem is important in the context of integrating radar into collocated communication systems since the hardware must be able to accommodate full-duplex and the associated spillover without saturating. The concept of beamforming cancellation is adopted and a design suited for beamforming codebooks is formulated based on the peak to sidelobe ratio objective and a peak power and signal-to-noise ratio constraint. The performance is demonstrated numerically with non-ideal hardware models, where we show the feasibility of using beamforming codebooks for simultaneous beamsteering and cancellation of strong spillover signals.