Exploració per autor "Valenzuela González, José Luis"
Ara es mostren els items 26-39 de 39
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On the feasibility of Bluetooth, Zigbee and IEEE 802.15.4 technologies on board high speed trains
Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga (2011)
Text en actes de congrés
Accés obertThis paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional land-to-train communication. The presented ... -
On the use of sniffers for spectrum occupancy measurements of Bluetooth low energy primary channels
Valenzuela Pérez, Ana; García Lozano, Mario; Valenzuela González, José Luis; Pérez Díaz de Cerio, David; Hernandez Solana, Angela; Valdovinos, Antonio (Elsevier, 2022-08-01)
Article
Accés obertThe methods usually employed to measure channel occupancy show limitations in the context of Bluetooth Low Energy (BLE) advertisements. We propose and analyze the use of BLE sniffers as light and portable low-cost spectrum ... -
Opportunistic scheduling using an enhanced channel state information update scheme for WLAN systems with DQCA
Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2007)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional ground-to-train communication. The presented ... -
Performance of adaptive bayesian equalizers in outdoor environments
Valenzuela González, José Luis; Casadevall Palacio, Fernando José (IEEE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC., 1997)
Text en actes de congrés
Accés obertOutdoor communications are affected by multipath propagation that imposes an upper limit on the system data rate and restricts possible applications. In order to overcome the degrading effect introduced by the channel, ... -
Performance of blind equalization with higher order statistics in indoor radio environments
Valenzuela González, José Luis; Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1997-05)
Article
Accés obertThis paper analyzes the performance of blind equalization using the complex cepstrum of third-order moments applied to 4-QAM time division multiple access (TDMA) indoor radio communication systems. In particular, we have ... -
Performance of Blind Equalization with Higher Order Statistics in Indoor Radio Environments
Valenzuela González, José Luis; Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José (1997-05)
Article
Accés obertThis paper analyzes the performance of blind equalization using the complex cepstrum of third-order moments applied to 4-QAM time division multiple access (TDMA) indoor radio communication systems. In particular, we have ... -
Principios de comunicaciones móviles
Sallent Roig, Oriol; Valenzuela González, José Luis; Agustí Comes, Ramon (Edicions UPC, 2003)
Llibre
Accés restringit als usuaris de la UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UICEn este libro se presentan los aspectos fundamentales que intervienen en los sistemas de comunicaciones móviles, al objeto de facilitar la comprensión de los principios de funcionamiento y los requerimientos tanto actuales ... -
Proposal and evaluation of BLE discovery process based on new features of bluetooth 5.0
Hernandez Solana, Angela; Pérez Díaz de Cerio, David; Valdovinos, Antonio; Valenzuela González, José Luis (MDPI AG, 2017-09-01)
Article
Accés obertThe device discovery process is one of the most crucial aspects in real deployments of sensor networks. Recently, several works have analyzed the topic of Bluetooth Low Energy (BLE) device discovery through analytical or ... -
Provisioning vehicular services and communications based on a bluetooth sensor network deployment
Pérez Díaz de Cerio, David; Valenzuela González, José Luis (2015-06-01)
Article
Accés obertIt is very common to rule out Bluetooth as a suitable technology for vehicular communications. The reasons behind this decision usually result from misconceptions such as accepting that Bluetooth has a short application ... -
PSM-DMO: power save mode and discontinuous BLE mesh operation
Hernandez Solana, Angela; Pérez Díaz de Cerio, David; García Lozano, Mario; Valdovinos, Antonio; Valenzuela González, José Luis (2022-08-04)
Article
Accés obertThe Bluetooth Low Energy (BLE) mesh profile, standardized by the Bluetooth Special Interest Group (SIG), has an increasing interest in IoT solutions. However, the standard assumes that relay and friend nodes should be ... -
Research activities at WiComTec-UPC research group
Ruiz Boqué, Sílvia; García Lozano, Mario; Pérez Díaz de Cerio, David; Valenzuela González, José Luis; Olmos Bonafé, Juan José; Alonso Zárate, Luis Gonzaga; Joud, Mohammad (2016)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper is an introduction of the main research activities in which the Wireless Communications and Technologies research group (WiComTec-UPC) is involved now or has planned for the next years, oriented to disseminate ... -
Speeding up bluetooth mesh
Pérez Díaz de Cerio, David; Hernandez Solana, Angela; García Lozano, Mario; Valdovinos Bardají, Antonio; Valenzuela González, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
Article
Accés obertBluetooth has constantly evolved from its cradle in 1997 to the last 5.2 version in 2020. With each update and amendment, it has gained in speed, range, and versatility. One of the latest introductions was the Bluetooth ... -
The help4mood wearable sensor network for inconspicuous activity measurement
Pérez Díaz de Cerio, David; Ruiz Boqué, Sílvia; Rosell Ferrer, Francisco Javier; Ramos Castro, Juan José; Valenzuela González, José Luis; Colomé Castellví, Josep Maria (2013-08)
Article
Accés restringit per política de l'editorialThe Help4Mood EU FP7 project (H4M) [1] proposes to significantly advance the state-ofthe-art in computerized support for people with Major Depression by monitoring mood, physical activity and voice characteristics while ... -
Trimming the power consumption of domestic Wi-Fi networks: how much power does your router need?
Pérez Díaz de Cerio, David; González Rodríguez, Marta; Valenzuela González, José Luis; González Arbesú, José María (2015)
Text en actes de congrés
Accés restringit per política de l'editorialThis work is part of a project where the goals are: designing energetically-optimum domestic WiFi routers; obtaining real and accurate power consumed models as a function of router configuration, and providing the ...