2021
Reduced-Complexity Channel Estimation by Hierarchical Interpolation Exploiting Sparsity for Massive MIMO Systems with Uniform Rectangular Array
ICASSP 2021accepted
Angle reciprocity is an important property adopted for massive MIMO channel estimation. For systems equipped with uniform rectangular antenna array, two-dimensional fast Fourier transform (2D-FFT) is often employed to transform the information in the spatial domain to the angular domain. To save the…