Debido a la complejidad para introducir por primera vez la temática de los convertidores de imped... more Debido a la complejidad para introducir por primera vez la temática de los convertidores de impedancia en el ámbito universitario, específicamente los giradores (Circuito de Antoniou) y circuitos FDNR (Frequency Dependent Negative Resistance), se elabora una introducción didáctica, básica y detallada de los convertidores de impedancia, específicamente de los giradores y los circuitos FDNR usados en el curso de Electrónica II de la Universidad de la Costa.
ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, iden... more ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, identify valid vehicles, and remove misbehaving ones. A Public Key Infrastructure (PKI) can provide this functionality using digital certificates. In PKI, key management and corresponding issuance and revocation of digital certificates is one of the key issues that have to be solved. The IEEE 1609.2 standard states that VANETs will rely on the use of certificate revocation lists (CRLs) to achieve revocation. In this paper, we analyze the problems of using CRLs in these type of networks. Moreover, we describe the Risk Aware Revocation (RAR) mechanism that improves the traditional use of CRLs. RAR takes advantage of the two distinct channel types in VANETs to increase the freshness of the revocation information. Moreover, RAR allows users to gauge the risk of operating in a VANET when using CRLs.
2012 IEEE 3rd Latin American Symposium on Circuits and Systems (LASCAS), 2012
A digital system architecture for a three-input one-output zero-order ANFIS (Adaptive Neuro-Fuzzy... more A digital system architecture for a three-input one-output zero-order ANFIS (Adaptive Neuro-Fuzzy Inference System) is presented. The proposed architecture takes into account that the training process is done off-line in the MATLAB environment. The system is implemented as a nonlinear-function generator for test purposes. Post-place and route simulation results obtained on a Xilinx Spartan-3 XC3S200 FPGA are presented. Its correct
Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster,... more Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster, UK Antonio Ferrari, Univ. Aveiro, PT Antonio Garcia Rozo, Uniandes, CO Arlindo Oliveira, IST, PT Armando Gomes, Motorola, BR Bernard Courtois, TIMA, FR Carlos Llanos QuinteiroIESB, BR Carlos Montoro, UFSC, BR Carlos Silva-Cardenas, PUC, PE Christian Piguet, CSEM,CH David Déharbe, UFRN, BR Dominique Borrione, TIMA, FR Edgar Sanchez-Sinencio, Texas A&M Univ.,USA Edmund Clarke, CMU/SCS, USA Edna Barros, ...
Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster,... more Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster, UK Antonio Ferrari, Univ. Aveiro, PT Antonio Garcia Rozo, Uniandes, CO Arlindo Oliveira, IST, PT Armando Gomes, Motorola, BR Bernard Courtois, TIMA, FR Carlos Llanos QuinteiroIESB, BR Carlos Montoro, UFSC, BR Carlos Silva-Cardenas, PUC, PE Christian Piguet, CSEM,CH David Déharbe, UFRN, BR Dominique Borrione, TIMA, FR Edgar Sanchez-Sinencio, Texas A&M Univ.,USA Edmund Clarke, CMU/SCS, USA Edna Barros, ...
Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster,... more Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster, UK Antonio Ferrari, Univ. Aveiro, PT Antonio Garcia Rozo, Uniandes, CO Arlindo Oliveira, IST, PT Armando Gomes, Motorola, BR Bernard Courtois, TIMA, FR Carlos Llanos QuinteiroIESB, BR Carlos Montoro, UFSC, BR Carlos Silva-Cardenas, PUC, PE Christian Piguet, CSEM,CH David Déharbe, UFRN, BR Dominique Borrione, TIMA, FR Edgar Sanchez-Sinencio, Texas A&M Univ.,USA Edmund Clarke, CMU/SCS, USA Edna Barros, ...
Debido a la complejidad para introducir por primera vez la temática de los convertidores de imped... more Debido a la complejidad para introducir por primera vez la temática de los convertidores de impedancia en el ámbito universitario, específicamente los giradores (Circuito de Antoniou) y circuitos FDNR (Frequency Dependent Negative Resistance), se elabora una introducción didáctica, básica y detallada de los convertidores de impedancia, específicamente de los giradores y los circuitos FDNR usados en el curso de Electrónica II de la Universidad de la Costa.
This work proposes an FPGA implementation of software radio architecture for a FM modulator. The ... more This work proposes an FPGA implementation of software radio architecture for a FM modulator. The architecture is based on the Altera Nios II ® soft-processor. The frequency synthesis is performed by the digital direct synthesizer. It's a real time system that uses an audio codec WM8731 [1] to acquire the audio signal. This signal is adapted to be a parameter of the DDS. Then the digital signal produced by the DDS is transformed to the analog domain using a 10-bit video DAC ADV7123 [2].
ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, iden... more ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, identify valid vehicles, and remove misbehaving ones. A Public Key Infrastructure (PKI) can provide this functionality using digital certificates. In PKI, key management and corresponding issuance and revocation of digital certificates is one of the key issues that have to be solved. The IEEE 1609.2 standard states that VANETs will rely on the use of certificate revocation lists (CRLs) to achieve revocation. In this paper, we analyze the problems of using CRLs in these type of networks. Moreover, we describe the Risk Aware Revocation (RAR) mechanism that improves the traditional use of CRLs. RAR takes advantage of the two distinct channel types in VANETs to increase the freshness of the revocation information. Moreover, RAR allows users to gauge the risk of operating in a VANET when using CRLs.
Debido a la complejidad para introducir por primera vez la temática de los convertidores de imped... more Debido a la complejidad para introducir por primera vez la temática de los convertidores de impedancia en el ámbito universitario, específicamente los giradores (Circuito de Antoniou) y circuitos FDNR (Frequency Dependent Negative Resistance), se elabora una introducción didáctica, básica y detallada de los convertidores de impedancia, específicamente de los giradores y los circuitos FDNR usados en el curso de Electrónica II de la Universidad de la Costa.
ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, iden... more ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, identify valid vehicles, and remove misbehaving ones. A Public Key Infrastructure (PKI) can provide this functionality using digital certificates. In PKI, key management and corresponding issuance and revocation of digital certificates is one of the key issues that have to be solved. The IEEE 1609.2 standard states that VANETs will rely on the use of certificate revocation lists (CRLs) to achieve revocation. In this paper, we analyze the problems of using CRLs in these type of networks. Moreover, we describe the Risk Aware Revocation (RAR) mechanism that improves the traditional use of CRLs. RAR takes advantage of the two distinct channel types in VANETs to increase the freshness of the revocation information. Moreover, RAR allows users to gauge the risk of operating in a VANET when using CRLs.
2012 IEEE 3rd Latin American Symposium on Circuits and Systems (LASCAS), 2012
A digital system architecture for a three-input one-output zero-order ANFIS (Adaptive Neuro-Fuzzy... more A digital system architecture for a three-input one-output zero-order ANFIS (Adaptive Neuro-Fuzzy Inference System) is presented. The proposed architecture takes into account that the training process is done off-line in the MATLAB environment. The system is implemented as a nonlinear-function generator for test purposes. Post-place and route simulation results obtained on a Xilinx Spartan-3 XC3S200 FPGA are presented. Its correct
Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster,... more Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster, UK Antonio Ferrari, Univ. Aveiro, PT Antonio Garcia Rozo, Uniandes, CO Arlindo Oliveira, IST, PT Armando Gomes, Motorola, BR Bernard Courtois, TIMA, FR Carlos Llanos QuinteiroIESB, BR Carlos Montoro, UFSC, BR Carlos Silva-Cardenas, PUC, PE Christian Piguet, CSEM,CH David Déharbe, UFRN, BR Dominique Borrione, TIMA, FR Edgar Sanchez-Sinencio, Texas A&M Univ.,USA Edmund Clarke, CMU/SCS, USA Edna Barros, ...
Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster,... more Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster, UK Antonio Ferrari, Univ. Aveiro, PT Antonio Garcia Rozo, Uniandes, CO Arlindo Oliveira, IST, PT Armando Gomes, Motorola, BR Bernard Courtois, TIMA, FR Carlos Llanos QuinteiroIESB, BR Carlos Montoro, UFSC, BR Carlos Silva-Cardenas, PUC, PE Christian Piguet, CSEM,CH David Déharbe, UFRN, BR Dominique Borrione, TIMA, FR Edgar Sanchez-Sinencio, Texas A&M Univ.,USA Edmund Clarke, CMU/SCS, USA Edna Barros, ...
Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster,... more Adoracion Rueda, IMSE-CNM, ES Alex Orailoglu, UC San Diego, USA Andrew Richardson, CME-Lancaster, UK Antonio Ferrari, Univ. Aveiro, PT Antonio Garcia Rozo, Uniandes, CO Arlindo Oliveira, IST, PT Armando Gomes, Motorola, BR Bernard Courtois, TIMA, FR Carlos Llanos QuinteiroIESB, BR Carlos Montoro, UFSC, BR Carlos Silva-Cardenas, PUC, PE Christian Piguet, CSEM,CH David Déharbe, UFRN, BR Dominique Borrione, TIMA, FR Edgar Sanchez-Sinencio, Texas A&M Univ.,USA Edmund Clarke, CMU/SCS, USA Edna Barros, ...
Debido a la complejidad para introducir por primera vez la temática de los convertidores de imped... more Debido a la complejidad para introducir por primera vez la temática de los convertidores de impedancia en el ámbito universitario, específicamente los giradores (Circuito de Antoniou) y circuitos FDNR (Frequency Dependent Negative Resistance), se elabora una introducción didáctica, básica y detallada de los convertidores de impedancia, específicamente de los giradores y los circuitos FDNR usados en el curso de Electrónica II de la Universidad de la Costa.
This work proposes an FPGA implementation of software radio architecture for a FM modulator. The ... more This work proposes an FPGA implementation of software radio architecture for a FM modulator. The architecture is based on the Altera Nios II ® soft-processor. The frequency synthesis is performed by the digital direct synthesizer. It's a real time system that uses an audio codec WM8731 [1] to acquire the audio signal. This signal is adapted to be a parameter of the DDS. Then the digital signal produced by the DDS is transformed to the analog domain using a 10-bit video DAC ADV7123 [2].
ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, iden... more ABSTRACT Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, identify valid vehicles, and remove misbehaving ones. A Public Key Infrastructure (PKI) can provide this functionality using digital certificates. In PKI, key management and corresponding issuance and revocation of digital certificates is one of the key issues that have to be solved. The IEEE 1609.2 standard states that VANETs will rely on the use of certificate revocation lists (CRLs) to achieve revocation. In this paper, we analyze the problems of using CRLs in these type of networks. Moreover, we describe the Risk Aware Revocation (RAR) mechanism that improves the traditional use of CRLs. RAR takes advantage of the two distinct channel types in VANETs to increase the freshness of the revocation information. Moreover, RAR allows users to gauge the risk of operating in a VANET when using CRLs.
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Electrónica II de la Universidad de la Costa.
Electrónica II de la Universidad de la Costa.