Blind Non-Minimum Phase Channel Identification Using 3rd and 4th Order Cumulants

Abstract

In this paper we propose a family of algorithms based on 3 rd and 4 th order cumulants for blind single-input single-output (SISO) Non-Minimum Phase (NMP) Finite Impulse Response (FIR) channel estimation driven by non-Gaussian signal. The input signal represents the signal used in 10GBASE-T (or IEEE 802.3an-2006) as a Tomlinson-Harashima Precoded (THP) version of random Pulse-Amplitude Modulation with 16 discrete levels (PAM-16). The proposed algorithms are tested using three non-minimum phase channel for different Signal-to-Noise Ratios (SN R) and for different data input length. Numerical simulation results are presented to illustrate the performance of the proposed algorithms. Keywords—Higher Order Cumulants, Channel identification, Ethernet communication.