Asymptotic Properties of Likelihood Based Linear Modulation Classification Systems
Abstract
The problem of linear modulation classification using likelihood based methods is considered. Asymptotic properties of most commonly used classifiers in the literature are derived. These classifiers are based on hybrid likelihood ratio test (HLRT) and average likelihood ratio test (ALRT), respectively. Both a single-sensor setting and a multi-sensor setting that uses a distributed decision fusion approach are analyzed. For a modulation classification system using a single sensor, it is shown that HLRT achieves asymptotically vanishing probability of error (Pe) whereas the same result cannot be proven for ALRT. In a multi-sensor setting using soft decision fusion, conditions are derived under which Pe vanishes asymptotically. Furthermore, the asymptotic analysis of the fusion rule that assumes independent sensor decisions is carried out.
Keywords
Cite
@article{arxiv.1211.6631,
title = {Asymptotic Properties of Likelihood Based Linear Modulation Classification Systems},
author = {Onur Ozdemir and Pramod K. Varshney and Wei Su and Andrew L. Drozd},
journal= {arXiv preprint arXiv:1211.6631},
year = {2012}
}
Comments
12 pages double-column, 6 figures, submitted to IEEE Transactions on Wireless Communications