Blind estimation of multiple co-channel digital signals using base station antenna arrays

摘要

In this correspondence,we are concerned with estimation of multiple co-channel digital signals with base station antenna arrays.By exploiting a specific characteristic of signal subspace,we devise a refined iterative least squares projection algorithm that tends to be more promising than an existing one in terms of both estimation accuracy and convergence rate,particularly,in low SNR scenarios.We also present numerical examples to demonstrate the potential of the proposed algorithm.