Improved Estimation of the Ricean K Factor from I/Q Samples

@article{Baddour2007ImprovedEO,
  title={Improved Estimation of the Ricean K Factor from I/Q Samples},
  author={Kareem E. Baddour and Tricia J. Willink},
  journal={2007 IEEE 66th Vehicular Technology Conference},
  year={2007},
  pages={1228-1232}
}
Knowledge of the Ricean K factor is important in many communication applications as it reveals the fading severity experienced by a wireless receiver. In this paper, a statistical analysis of the maximum likelihood estimator (MLE) of K from complex (I/Q) Ricean channel samples is derived. Based on our analysis, an improved estimator of the K factor is proposed with superior bias and efficiency properties for short data records. The lack of robustness of the tractable MLE in mobile applications… CONTINUE READING

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