Near-Field Sensing Limits for 6G Antenna Arrays
Analysis
Key Takeaways
- •Develops a unified narrow-band near-field signal model for joint parameter sensing.
- •Derives closed-form Cram'er-Rao bounds (CRBs) for target parameter estimation.
- •Provides explicit far-field and near-field approximations to understand scaling laws.
- •Offers guidelines for beamformer and algorithm design for near-field sensing.
“The paper derives closed-form Cram'er--Rao bounds (CRBs) for joint estimation of target position, velocity, and radar cross-section (RCS).”