title: Joint Parameter Estimation for the Two-Wave with Diffuse Power Fading Model.
abstract: Wireless sensor networks deployed within metallic cavities are known to suffer from a very severe fading, even in strong line-of-sight propagation conditions. This behavior is well-captured by the Two-Wave with Diffuse Power (TWDP) fading distribution, which shows great fit to field measurements in such scenarios. In this paper, we address the joint estimation of the parameters K and Δ that characterize the TWDP fading model, based on the observation of the received signal envelope. We use a moment-based approach to derive closed-form expressions for the estimators of K and Δ, as well as closed-form expressions for their asymptotic variance. Results show that the estimation error is close to the Cramer-Rao lower bound for a wide range of values of the parameters K and Δ. The performance degradation due to a finite number of observations is also analyzed.
authors.affiliation: Departamento de Ingenier&#237;a de Comunicaciones, ETS Ingenier&#237;a de Telecomunicaci&#243;n, Universidad de M&#225;laga, M&#225;laga 29071, Spain. jlf@ic.uma.es.
authors.forename: Jesus
authors.initials: J
authors.lastname: Lopez-Fernandez
authors.affiliation: Departamento de Ingenier&#237;a de Comunicaciones, ETS Ingenier&#237;a de Telecomunicaci&#243;n, Universidad de M&#225;laga, M&#225;laga 29071, Spain. lmp@ic.uma.es.
authors.forename: Laureano
authors.initials: L
authors.lastname: Moreno-Pozas
authors.affiliation: Departamento de Ingenier&#237;a de Comunicaciones, ETS Ingenier&#237;a de Telecomunicaci&#243;n, Universidad de M&#225;laga, M&#225;laga 29071, Spain. fjlopezm@ic.uma.es.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Lopez-Martinez
authors.affiliation: Departamento de Ingenier&#237;a de Comunicaciones, ETS Ingenier&#237;a de Telecomunicaci&#243;n, Universidad de M&#225;laga, M&#225;laga 29071, Spain. eduardo@ic.uma.es.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Martos-Naya
keywords: Cramer-Rao bound; Rician fading; Two-Wave with diffuse power; fading channels; moment-based estimation