Derives wideband compressed-domain CRB for near-field XL-MIMO, decomposing Fisher information into dominant data-diversity gain scaling as 10 log10(Ks) dB and secondary geometric-diversity from frequency-dependent Fresnel curvature, with +27.8 dB total improvement at 28 GHz and 400 MHz bandwidth.
Fundamental limits for near-field sensing - part ii: Wide-band systems
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A parametric SNS channel model with geometric constraints and the GC-SAGE algorithm enable joint near-field channel estimation and environment mapping for ELAAs in ISAC systems.
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Wideband Compressed-Domain Cramer-Rao Bounds for Near-Field XL-MIMO: Data and Geometric Diversity Decomposition
Derives wideband compressed-domain CRB for near-field XL-MIMO, decomposing Fisher information into dominant data-diversity gain scaling as 10 log10(Ks) dB and secondary geometric-diversity from frequency-dependent Fresnel curvature, with +27.8 dB total improvement at 28 GHz and 400 MHz bandwidth.
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Propagation Mechanism-Aware Near-Field Spatially Non-Stationary Channel Estimation and Environment Mapping
A parametric SNS channel model with geometric constraints and the GC-SAGE algorithm enable joint near-field channel estimation and environment mapping for ELAAs in ISAC systems.