EM-based Semi-blind Channel Estimation in AF Two-Way Relay Networks

Saeed Abdallah; Ioannis N. Psaromiligkos

EM-based Semi-blind Channel Estimation in AF Two-Way Relay Networks

Information Theory 2013-04-25 v1 math.IT Other Statistics

Authors: Saeed Abdallah , Ioannis N. Psaromiligkos

Abstract

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 incorporating both data samples and pilots into the estimation, the proposed algorithm provides substantially higher accuracy than the conventional training-based approach. Furthermore, the proposed algorithm has a linear computational complexity per iteration and converges after a small number of iterations.

Keywords

expectation maximization semi-blind channel estimation amplify-and-forward two-way relay networks reciprocal channels pilot-assisted estimation

Cite

@article{arxiv.1304.6617,
  title  = {EM-based Semi-blind Channel Estimation in AF Two-Way Relay Networks},
  author = {Saeed Abdallah and Ioannis N. Psaromiligkos},
  journal= {arXiv preprint arXiv:1304.6617},
  year   = {2013}
}

Comments

3 pages, 2 figures

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