Beam-Squint-Aided Hierarchical Sensing for Integrated Sensing and Communications
Analysis
This paper introduces a novel hierarchical sensing framework for wideband integrated sensing and communications using uniform planar arrays (UPAs). The key innovation lies in leveraging the beam-squint effect in OFDM systems to enable efficient 2D angle estimation. The proposed method uses a multi-stage sensing process, formulating angle estimation as a sparse signal recovery problem and employing a modified matching pursuit algorithm. The paper also addresses power allocation strategies for optimal performance. The significance lies in improving sensing performance and reducing sensing power compared to conventional methods, which is crucial for efficient integrated sensing and communication systems.
Key Takeaways
- •Proposes a hierarchical sensing framework for wideband integrated sensing and communications.
- •Leverages the beam-squint effect for efficient 2D angle estimation.
- •Formulates angle estimation as a sparse signal recovery problem.
- •Develops a modified matching pursuit algorithm for the hierarchical architecture.
- •Designs power allocation strategies to optimize performance.
“The proposed framework achieves superior performance over conventional sensing methods with reduced sensing power.”