Compressed Sensing-Based Sparse Spatial Channel Estimation under IQ Imbalance
Compressive sensing (CS) enables fast spatial channel estimation in millimeter-wave and terahertz systems by leveraging the sparsity of the channel in the angle-domain. CS measurements, however, are often distorted by in-phase and quadrature-phase (IQ) imbalance at the oscillator, leading to a model mismatch. In this p...