Semi-blind channel estimation using knowledge of a pulse shape for faster-than-Nyquist signaling

Abstract

In this paper, we propose a semi-blind channel estimation method for faster-than-Nyquist (FTN) signaling. The proposed method combines the least-squares (LS) method using training symbols with a blind estimation method using knowledge of the pulse shape. It is shown that the proposed semi-blind method requires fewer training symbols than the LS method, and it is superior to the blind method regardless of the packing ratio of FTN signaling.