Partially-blind Estimation of Reciprocal Channels for AF Two-Way Relay Networks Employing M-PSK Modulation
Information Theory
2012-02-17 v1 math.IT
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Abstract
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 maximum-likelihood estimator was derived by treating the data as deterministic unknowns. We prove that this estimator approaches the true channel with high probability at high signal-to-noise ratio (SNR) but is not consistent. We then propose an alternative estimator which is consistent and has similarly favorable high SNR performance. We also derive the Cramer-Rao bound on the variance of unbiased estimators.
Keywords
Cite
@article{arxiv.1202.3468,
title = {Partially-blind Estimation of Reciprocal Channels for AF Two-Way Relay Networks Employing M-PSK Modulation},
author = {Saeed Abdallah and Ioannis N. Psaromiligkos},
journal= {arXiv preprint arXiv:1202.3468},
year = {2012}
}
Comments
6 pages, 4 figures