37 citations · 47 across the 5 of their papers we have counts for
5 papers
EM-based Semi-blind Channel Estimation in AF Two-Way Relay Networks
Saeed Abdallah, Ioannis N. Psaromiligkos
We propose an expectation maximization (EM)-based algorithm for semi-blind channel estimation of reciprocal channels in amplify-and-forward (AF) two-way relay networks (TWRNs). By…
Exact Cramer-Rao Bounds for Semi-blind Channel Estimation in Amplify-and-Forward Two-Way Relay Networks
Saeed Abdallah, Ioannis N. Psaromiligkos
In this paper, we derive for the first time the exact Cramer-Rao bounds (CRBs) on semi-blind channel estimation for amplify-and-forward two-way relay networks. The bounds cover a w…
Partially-blind Estimation of Reciprocal Channels for AF Two-Way Relay Networks Employing M-PSK Modulation
Saeed Abdallah, Ioannis N. Psaromiligkos
We consider the problem of channel estimation for amplify-and-forward two-way relays assuming channel reciprocity and M-PSK modulation. In an earlier work, a partially-blind maximu…
Widely Linear vs. Conventional Subspace-Based Estimation of SIMO Flat-Fading Channels: Mean-Squared Error Analysis
Saeed Abdallah, Ioannis N. Psaromiligkos
We analyze the mean-squared error (MSE) performance of widely linear (WL) and conventional subspace-based channel estimation for single-input multiple-output (SIMO) flat-fading cha…
Blind Channel Estimation for Amplify-and-Forward Two-Way Relay Networks Employing M-PSK Modulation
Saeed Abdallah, Ioannis N. Psaromiligkos
We consider the problem of channel estimation for amplify-and-forward (AF) two-way relay networks (TWRNs). Most works on this problem focus on pilot-based approaches which impose a…