Compressive Toeplitz Covariance Estimation From Few-Bit Quantized Measurements With Applications to DOA Estimation

This paper explores a method for estimating Toeplitz covariance matrices from quantized measurements, focusing on scenarios with limited data and low-bit quantization. The research is particularly relevant to applications like Direction of Arrival (DOA) estimation, where efficient signal processing is crucial. The core contribution lies in developing a compressive sensing approach that can accurately estimate the covariance matrix even with highly quantized data. The paper's strength lies in its practical relevance and potential for improving the performance of DOA estimation algorithms in resource-constrained environments. However, the paper could benefit from a more detailed comparison with existing methods and a thorough analysis of the computational complexity of the proposed approach.