Dictionary Learning for Channel Estimation in Hybrid Frequency-Selective mmWave MIMO Systems

Xie Hongxiang
Xie Hongxiang
Rodríguez-Fernández Javier
Rodríguez-Fernández Javier
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Abstract:

Exploiting channel sparsity at millimeter wave (mmWave) frequencies reduces the high training overhead associated with the channel estimation stage. Compressive sensing (CS) channel estimation techniques usually adopt the (overcomplete) wavelet/Fourier transform matrix as a sparsifying dictionary. This may not be the best choice when co...More

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