Carlos J. Escudero

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—In this correspondence, we reply to the comments in Gu et al. [ " Comments on 'A blind signal separation method for multiuser communications,' " We explain that the global convergence analysis of the method in Castedo et al. [ " A blind signal separation method for multiuser communications, " IEEE Transactions on Signal Processing,] can be completed as an(More)
The problem of blind channel identiication for Direct-Sequence/Code-Division Multiple-Access (DS/CDMA) multiuser systems is explored. For wideband DS/CDMA signals, multipath distortion is well modeled by a a nite-impulse response model. In this work, a blind channel identiication technique based on second order statistics is investigated. The method(More)
— In this paper we address the problem of indoor tracking using received signal strength (RSS) as a position-dependent data measurement. This type of measurements are very appealing because they can be easily obtained with a variety of wireless technologies which are relatively inexpensive. The extraction of accurate location information from RSS in indoor(More)
The IEEE 802.11p standard has been optimized for low-delay small-bandwidth wireless communications to provide vehicular safety services. However, IEEE 802.11p transceivers can considerably improve their robustness by incorporating MIMO transmission methods. Moreover, multiple antennas can also be used to increase the data transfer rate of IEEE 802.11p(More)
Finite length CMA equalizers contain undesired minima termed Length Dependent Local Minima (LDLM). We note that for auto-regressive (AR) channels, the equalizer output is correlated with a delayed input at these minima. This property is then used to modify the CMA cost function and remove the LDLM in AR channels. Permission to publish this abstract(More)
The rising popularity of location-based services has prompted considerable research in the field of indoor location systems. Since there is no single technology to support these systems, it is necessary to consider the fusion of the information coming from heterogeneous sensors. This paper presents a software architecture designed for a hybrid location(More)
In this paper we address the problem of indoor tracking using received signal strength (RSS) as a position-dependent data measurement. Since RSS is highly influenced by multipath propagation, it turns out very hard to adequately model the correspondence between the received power and the transmitter-to-receiver distance. Although various models have been(More)