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- Laureano Moreno-Pozas, F. Javier López-Martínez, José F. Paris, Eduardo Martos-Naya
- IEEE Trans. Vehicular Technology
- 2016

- Milind Rao, F. Javier López-Martínez, Mohamed-Slim Alouini, Andrea J. Goldsmith
- IEEE Transactions on Wireless Communications
- 2015

We analyze a class of generalized two-ray (GTR) fading channels that consist of two line-of-sight (LOS) components with random phase plus a diffuse component. We derive a closed-form expression for the moment-generating function of the signal-to-noise ratio (SNR) for this model, which greatly simplifies its analysis. This expression arises from the… (More)

- F. Javier López-Martínez, Gerardo Gómez, José María Garrido-Balsells
- IEEE Photonics Journal
- 2015

The communication between two legitimate peers in the presence of an external eavesdropper is studied from a physical-layer security perspective in the context of free-space optical (FSO) communications. We discuss viable mechanisms to eavesdrop the communication and study the effect of random optical irradiance fluctuations inherent to FSO communications… (More)

- David Morales-Jiménez, F. Javier López-Martínez, Eduardo Martos-Naya, José F. Paris, Angel E. Lozano
- IEEE Trans. Information Theory
- 2014

This paper presents a new connection between the generalized Marcum-Q function and the confluent hypergeometric function of two variables, Φ3. This result is then applied to the closed-form characterization of the bivariate Nakagami-m distribution and of the distribution of the minimum eigenvalue of correlated non-central Wishart matrices, both important in… (More)

- F. Javier López-Martínez, Eduardo Martos-Naya, José F. Paris, Unai Fernández-Plazaola
- IEEE Transactions on Vehicular Technology
- 2010

A general framework for the bit error rate (BER) analysis of quadrature amplitude modulation (QAM) systems is presented. This analysis is valid for any QAM system with independent bit mapping for in-phase and quadrature components and includes previous analyses in the literature as particular cases. We use this methodology to analyze BER in maximal ratio… (More)

- F. Javier López-Martínez, Eduardo Martos-Naya, José F. Paris, Unai Fernández-Plazaola
- IEEE Transactions on Vehicular Technology
- 2012

In this paper, we present a novel analytical framework for the calculation of the level crossing rate (LCR) and the average fade duration (AFD) of fading channels sampled at a certain sampling period <i>T</i><sub>S</sub>. These expressions are valid for arbitrary fading distributions with arbitrary correlation and can be easily computed in terms of the… (More)

- Juan Manuel Romero-Jerez, F. Javier López-Martínez
- IEEE Transactions on Information Theory
- 2017

We present a novel relationship between the distribution of circular and non-circular complex Gaussian random variables. Specifically, we show that the distribution of the squared norm of a non-circular complex Gaussian random variable, usually referred to as the squared Hoyt distribution, can be constructed from a conditional exponential distribution. From… (More)

- Eduardo del Castillo-Sánchez, F. Javier López-Martínez, Eduardo Martos-Naya, José T. Entrambasaguas
- 2009 IEEE Wireless Communications and Networking…
- 2009

A blind method for jointly estimating and correcting time, carrier frequency and sampling clock frequency synchronization in OFDM based systems is proposed. The algorithm is particularlly suitable for low-cost terminal implementations, since it provides a great efficiency in terms of hardware complexity. Its performance has been tested on a real system,… (More)

- Juan Manuel Romero-Jerez, F. Javier López-Martínez, José F. Paris, Andrea J. Goldsmith
- IEEE Transactions on Wireless Communications
- 2017

We introduce the fluctuating two-ray (FTR) fading model, a new statistical channel model that consists of two fluctuating specular components with random phases plus a diffuse component. The FTR model arises as the natural generalization of the two-wave with diffuse power (TWDP) fading model; this generalization allows its two specular components to exhibit… (More)

- F. Javier López-Martínez, Eduardo del Castillo-Sánchez, Eduardo Martos-Naya, José T. Entrambasaguas
- Digital Signal Processing
- 2012