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.
Bilinear Matrix Factorization Methods for Time-Varying Narrowband Channel Esti- mation: Exploiting Sparsity and Rank
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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.