Analytical and empirical evaluation of the impact of Gaussian noise on the modulations employed by Bluetooth Enhanced Data Rates

Bluetooth (BT) is a leading technology for the deployment of wireless Personal Area Networks and Body Area Networks. Versions 2.0 and 2.1 of the standard, which are massively implemented in commercial devices, improve the throughput of the BT technology by enabling the so-called Enhanced Data Rates (EDR). EDRs are achieved by utilizing new modulation techniques (π/4-DQPSK and 8-DPSK), apart from the typical Gaussian Frequency Shift Keying modulation supported by previous versions of BT. This manuscript presents and validates a model to characterize the impact of white noise on the performance of these modulations. The validation is systematically accomplished in a testbed with actual BT interfaces and a calibrated white noise generator.Ministerio de Educación y Ciencia TEC2009-13763-C02-0

A characterization of the performance of Bluetooth 2.x + EDR technology in noisy environments

Bluetooth (BT) is by far the most popular shortrange technology for the development of wireless personal area networks and body area networks. Nowadays, BT 2.0 and 2.1 ? EDR are the most extended and implemented versions of BT standard. This article presents an analytical model that computes the packet delay of transmissions that utilize this version of BT in noisy environments. The model, which takes into account the packet retransmissions caused by noise, is particularized to calculate the mean packet delay as a function of the signal-to-noise ratio for the different enhanced data rates provided by BT 2.0 and 2.1 specifications. Thus, the model permits evaluating the efficiency of using these enhanced rates in the presence of a certain noise level.Ministerio de Ciencia e Innovación TEC2009-13763-C02-01Ministerio de Ciencia e Innovación TEC2013-42711-

Co-existence of wireless communication systems in ISM bands: An analytical study

Ph.DDOCTOR OF PHILOSOPH

Dispositivo para telemetría de señales biológicas que permite la utilización de diferentes tecnologías

La medicina ha tenido una gran evolución en el último siglo debido a la implementación y modernización de las tecnólogos en comunicaciones, esto ha facilitado que se pueda monitorear los signos vitales tales como la temperatura corporal y el electrocardiograma, sin necesidad que el especialista este al lado del paciente, para tal efecto se transmite estas señales hasta el sitio donde él se encuentre (central de enfermermería o consultorio médico) utilizando tecnólogos por separado, tales como Irda, Bluetooth, WiFi, entre otras.Pregrad