ML estimator based on the EM algorithm for subcarrier SNR estimation in multicarrier transmissions

@article{Descure2009MLEB,
  title={ML estimator based on the EM algorithm for subcarrier SNR estimation in multicarrier transmissions},
  author={Jean-Guy Descure and Faouzi Bellili and Sofi{\`e}ne Affes},
  journal={AFRICON 2009},
  year={2009},
  pages={1-5}
}
In this paper, considering multicarrier transmissions, we present a maximum likelihood estimator of the subcarrier signal-to-noise ratio (SNR) based on the expectation-maximization (EM) algorithm. This new estimator is applicable to any linearly-modulated signal. It is a non-data-aided (NDA) method since no a priori knowledge is assumed about the transmitted data. The channel gains and phase distortions on the different subcarriers are assumed to be constant during the observation window, and… CONTINUE READING