A hybrid sparse/diffuse frequency-domain channel model is proposed together with the HALS estimator and new Cramér-Rao bounds that incorporate minimum frequency-parameter separations.
The constrained cram ´er– rao bound from the perspective of fitting a model
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Atomic Hybrid Sparse/Diffuse Channel Estimation and Cram\'er-Rao Bounds Analysis
A hybrid sparse/diffuse frequency-domain channel model is proposed together with the HALS estimator and new Cramér-Rao bounds that incorporate minimum frequency-parameter separations.