Browsing by Author "Cartagena Gordillo, Alex"
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Item A study on residents willingness to pay for personal carbon trading and relevant factors(CUPUM, 2013) Zhou, Kui; Jia, San; Kondo, Akio; Konbdo, Akiko; Cartagena Gordillo, AlexUn estudio sobre la disposición de los residentes a pagar por el comercio de carbono personal y los factores relevantesItem Design and implementation of a body coupled communication system for streaming music(Institute of Electrical and Electronics Engineers Inc., 2017) Murillo Arenas, Giancarlo; Cartagena Gordillo, AlexThanks to the revolution in electronics and telecommunications, there is a proliferation of devices for medical applications and others operating in the body area. There is a novel way to connect two transceivers with the human body as a communication channel by body capacitive coupling. BCC (Body Coupled Communication) is a technology that uses the human body as an electric field propagation medium without using wires or RF technology. This work aims to design and implement a BCC audio transmission system by using the USRP1 hardware and GNU radio for the design, in this work we use measure the body channel frequency response by using a signal generator and an oscilloscope and we used a portable VNA to measure the impedance and verify the data. We were able to transmit at a bit rate of 128 Kbps. © 2016 IEEE.Item Designing a complementary system of authentication base on galvanic body communication(Institute of Electrical and Electronics Engineers Inc., 2017) Correa Zúñiga, Eduardo; Cartagena Gordillo, AlexThis article deals with the design, development and operation of security applications oriented in bodycommunication, along with analysis, evaluation and design of a complementary system of user authentication through fingerprint galvanic coupling and an authentication code. Different tests of galvanic model were performed to observe the frequency range, bandwidth, and also the conductivity of the human body. This way you can get a model safer and easier for users authentication. Besides it was designed and implemented a method to limit the transmission power and the signal is only transmitted in one part of the body, and prevent the information can be spread to other areas of the body. This galvanic method excludes the emission of electromagnetic fields which reduces the possibility of information theft. © 2016 IEEE.Item Implementation of an energy harvesting system by piezoelectric elements exploiting the human footsteps(Institute of Electrical and Electronics Engineers Inc., 2017) Savina Quispe, Johnny Nelson; Cartagena Gordillo, AlexThe fundamental idea of this research work is to present an approach to energy harvesting, which basically uses piezoelectric technology and is implemented in a shoe. It takes advantage of the energy that the user waste when walks and thus is able to convert it into electric energy and can be use in an electronic device that requires low power. © 2017 IEEE.Item Pulse design for reducing intercarrier interference in FBMC(Institute of Electrical and Electronics Engineers Inc., 2017) Madariaga Charaja, Alejandra Ximena; Cartagena Gordillo, AlexOFDM is widely used as a solution for broadband communications with multicarrier signals, but has disadvantages when it is used on certain applications especially in multiuser environments, where each user is assigned a subset of the system subcarriers. Although some researchers first investigated FBMC and then OFDM, FBMC recently has been recognized by the scientific community. In this article, we analyze why FBMC exceeds OFDM in terms of intercarrier interference, this interference is influenced by the filter used in FBMC and OFDM. The advantage of the former over the later is that you can design the pulse shape filter to reduce the inter-user interference, which is a big problem when you have multiple users; therefore FBMC is a solution for reducing this interference to not affect significantly to the subcarriers. © 2016 IEEE.