Jaime Calle-Sánchez

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SUMMARY This paper assesses the main challenges associated with the propagation and channel modeling of broadband radio systems in a complex environment of high speed and metropolitan railways. These challenges comprise practical simulation, modeling interferences, radio planning , test trials and performance evaluation in different railway scenarios using(More)
In this article, a novel approach to deal with the design of in-building wireless networks deployments is proposed. This approach known as MOQZEA (Multiobjective Quality Zone Based Evolutionary Algorithm) is a hybrid evolutionary algorithm adapted to use a novel fitness function, based on the definition of quality zones for the different objective functions(More)
Nowadays interest has grown in using Mobile Relay Station (MRS) system to provide cellular coverage to the onboard users in public transport, particularly in High Speed Trains (HSTs) due to high penetration rate of portable electronic devices such as smart phones, tablets and laptops. In the railway scenarios, when the signal propagates into the train, it(More)
Nowadays the number of vehicular users demanding mobile data services greatly increases due to the high penetration rate of smart phones, laptops and tablets. Under this scope, the 3GPP working group for LTE standardization, is paying more attention on vehicular scenarios, like railways environments. The proposed solution for improving performance in high(More)
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