Prof. Dr. Alejandro Valenzuela

Netzwerktechnik und Datensicherheit

Kontakt

Hochschule Bonn-Rhein-Sieg
E-Mail: 
alejandro.valenzuela [at] h-brs.de

Sankt Augustin

Grantham-Allee 20
53757
Sankt Augustin
Raum: 
B 231

Profil

Lehrgebiete:

Kommunikationstechnik

Vernetzte Systeme


Arbeitsschwerpunkte:

Einsatz und Entwicklung vernetzter Sensoren zum schonenden Umgang mit Ressourcen

Analoge und digitale Schaltungstechnik

Low Power Übertragungstechnik

Funksensornetzwerke

Projekte

Entwicklung von Sensornetzwerkkomponenten für intelligentes Energiemonitoring in großen Gebäuden

Autarke Funksensorsysteme für Umwelt, Landwirtschaft und industrielle Anwendungen

Publikationen

Prof. Dr. Alejandro Valenzuela

2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2006 | 1994 | 1993 | 1992 | 1991 | 1990 | 1989 | 1988

2018

Fadhil S. Hasan, Alejandro A. Valenzuela: Design and Analysis of an OFDM-Based Orthogonal Chaotic Vector Shift Keying Communication System.
doi:10.1109/ACCESS.2018.2862862 BibTeX | RIS

2017

Alejandro Valenzuela: Abwehrvorrichtung für kriechende lnsekten.
URL BibTeX | RIS

J. Vollmer, L. Bernhard, C. Schirrmeister, M. Ulrich, A. Valenzuela: Flexible machine monitoring by combination of autonomous wireless sensors with a web-interfaced sensor system.
doi:10.1109/REM.2017.8075229 BibTeX | RIS

Lucas E. Ramero, Adolfo A. Silnik, Alfredo F. Debattista, Roberto A. Kiessling, Alejandro A. Valenzuela: Propuesta de Arquitectura de Red de Datos para el Proyecto Campo Conectado.
URL BibTeX | RIS

2016

Hikmat N. Abdullah, Sura F. Yousif, Alejandro A. Valenzuela: Wavelet based image steganographic system using chaotic signals.
doi:10.1109/INFOCOMAN.2016.7784229 BibTeX | RIS

A. Gatri, Z. Ghassemlooy, A. Valenzuela: Performance analysis of QPSK FSO system with various operating wavelengths and adaptive optics over fog channel.
doi:10.1109/COBCOM.2016.7593511 BibTeX | RIS

2015

Hikmat N. Abdullah, Fadhil Sahib, Alejandro A. Valenzuela: FPGA based pi/4-DQPSK complex wavelet packet modulation.
doi:10.1109/SCVT.2014.7046713 BibTeX | RIS

2014

A. Gatri, Z. Ghassemlooy, A. Valenzuela, O. Strobel, R. Rejeb: Experimental study of coherent detection BPSK modulated communication link under controlled fog atmospheric conditions.
doi:10.1109/CSNDSP.2014.6923854 BibTeX | RIS

2013

Alejandro A. Valenzuela: Multisensor system for energy consumption awareness in large buildings.
doi:10.1109/SG-TEP.2012.6642392 BibTeX | RIS

Hikmat N. Abdullah, Fadhil Sahib, Alejandro Valenzuela: Hybrid PAPR reduction technique for complex wavelet packet modulation system.
doi:10.1109/WD.2012.6402814 BibTeX | RIS

A. Gatri, Z. Ghassemlooy, A. Valenzuela, O. Strobel, R. Rejeb, E. Leitgeb: Experimental study of the performance for BPSK subcarrier intensity modulation free space optics communications in a laboratory controlled turbulence channel.
doi:10.1109/NOC-OCI.2013.6582901 BibTeX | RIS

Alejandro A. Valenzuela, Hikmat N. Abdullah: Low Power Transmission for Autonomous Wireless Indoor Sensors.
doi:10.5162/sensor2013/C6.3 BibTeX | RIS

Hikmat N. Abdullah, Fadhil Hassan, Alejandro A. Valenzuela: FPGA based fast complex wavelet packet modulation (FCWPM) system.
doi:10.1109/CircuitsAndSystems.2013.6671610 BibTeX | RIS

2012

Hikmat N. Abdullah, Alejandro A. Valenzuela: Efficient chaotic communication system for wireless sensing applications.
doi:10.1109/SSD.2012.6198019 BibTeX | RIS

2011

Hikmat N. Abdullah, Alejandro A. Valenzuela: Performance Evaluation of FM-COOK Chaotic Communication System.
PDF Download doi:10.4236/jsip.2011.23023 urn:nbn:de:hbz:1044-opus-8455 BibTeX | RIS

A. A. Valenzuela, G. Heinen, M. Neumann, W. Prinz: Energietransparenz durch vernetzte Ethernet‐Stromsensor‐Plattform.
BibTeX | RIS

H. N. Abdullah, A. A. Valenzuela: Chaotic Communication for Wireless Sensing Applications.
BibTeX | RIS

H. N. Abdullah, F. Sahib, A. A. Valenzuela: Design of High Speed Haar Wavelet Packet Modulation (HWPM) System.
BibTeX | RIS

Alejandro A. Valenzuela, Hikmat N. Abdullah: A Joint Matlab/FPGA Design of AM Receiver for Teaching Purposes.
doi:10.1007/978-3-642-18375-1_14 BibTeX | RIS

2010

A. A. Valenzuela, G. Heinen, M. Neumann, W. Prinz: Low Cost Displays: final report prepared for RheinEnergie, Cologne.
BibTeX | RIS

A. A. Valenzuela, H. A. Hadi, H. N. Abdullah: FPGA Based Transceiver with Multiple Modulation Schemes Designed with Simulink HDL Coder.
BibTeX | RIS

A. A. Valenzuela, H. A. Hadi, H. N. Abdullah: Design and Implementation of a FPGA Based Software Defined Radio Using Simulink HDL Coder.
BibTeX | RIS

M. Krist, H. Wilden, A. A. Valenzuela: Design und Charakterisierung alternativer Chirp-basierter Signalgenerierungsschaltungen für Waveform-Diversity-Betrieb in bildgebenden Radaren im K-Band.
BibTeX | RIS

T. S. Beyer, A. A. Valenzuela: Der Entscheidungsweg zu aktuellen Funktechnologien für die M2M-Vernetzung im Alltag.
BibTeX | RIS

2009

A. A. Valenzuela, G. Heinen, M. Neumann, W. Prinz: Evaluation des Smart Metering-Konzepts: final presentation of interview results of the project "Future Housing" at IHK Köln/Bonn, Cologne.
BibTeX | RIS

A. A. Valenzuela, G. Heinen, M. Neumann, W. Prinz: Ergebnisse der Workshops zur Nutzerfreundlichkeit ausgewählter Systeme: final presentation of usability workshops for RheinEnergie, Cologne, November 2009.
BibTeX | RIS

2008

H. N. Abdullah, A. A. Valenzuela: A joint MATLAB/FPGA design of a digital receiver for teaching purposes.
BibTeX | RIS

2006

A. Bunzemeier, R. Lepper, U. Roth, H. Schäfer, A. Schwandt, G. Steinebach, Ch. Uhde, A. A. Valenzuela: Entwicklung von Hard- und Softwaremodulen für einen Kurzwellentransceiver nach dem SDR-Prinzip zum Einsatz in der Lehre: Abschlussbericht.
BibTeX | RIS

1994

W. Rauch, E. Gornik, G. Sölkner, A. A. Valenzuela, H. Behner, G. Gieres: High temperature superconducting coplanar and epitaxially grown microstrip transmission lines studied by a half-wavelength resonator technique.
doi:10.1016/0964-1807(94)90089-2 BibTeX | RIS

H. Hübner, A. A. Valenzuela: Radio frequency performance of superconducting thin films in high magnetic fields.
doi:10.1063/1.111250 BibTeX | RIS

1993

R. Weigel, A. A. Valenzuela, P. Russer: Koplanare hochtemperatur­supraleitende Hochfrequenzbauelemente.
BibTeX | RIS

R. Weigel, M. Nalezinski, A. A. Valenzuela, P. Russer: High-temperature superconducting X-band CPW band-pass filters with small band­width.
BibTeX | RIS

R. Weigel, A. A. Valenzuela, P. Russer: YBCO superconducting microwave components.
doi:10.1016/0964-1807(93)90307-N BibTeX | RIS

R. Weigel, M. Nalezinski, A. A. Valenzuela, P. Russer: Narrow-band YBCO superconducting parallel-coupled coplanar waveguide band-pass filters at 10 GHz.
doi:10.1109/MWSYM.1993.277109 BibTeX | RIS

A. A. Valenzuela, G. Sölkner, J. Kessler, P. Russer: Microwave Characterisation of Structured YBa2Cu3O7-δ - Thin Films.
doi:10.4028/www.scientific.net/MSF.130-132.349 BibTeX | RIS

A. A. Valenzuela, G. Sölkner, J. Kessier, P. Russer: Surface resistance and magnetic penetration depth of structured YBa2Cu3O7-δ-thin films.
doi:10.1016/0964-1807(93)90309-P BibTeX | RIS

W. Rauch, A. A. Valenzuela, G. Sölkner, F. Fox, H. Behner, G. Gieres, E. Gornik: Coplanar waveguide and epitaxial YBa2Cu3O7-x/NdAlO3/YBa2Cu3O7-x-trilayer transmission line resonators for microwave applications.
doi:10.1016/0964-1807(93)90310-X BibTeX | RIS

W. Rauch, E. Gornik, A. A. Valenzuela, G. Sölkner, F. Fox, H. Behner, G. Gieres, P. Russer: Planar transmission line resonators from YBa2Cu3O7-x thin films and epitaxial SIS multilayers.
doi:10.1109/77.233895 BibTeX | RIS

W. Rauch, E. Gornik, G. Sölkner, A. A. Valenzuela, F. Fox, H. Behner: Microwave properties of YBa2Cu3O7−x thin films studied with coplanar transmission line resonators.
doi:10.1063/1.353173 BibTeX | RIS

W. Rauch, E. Gornik, G. Sölkner, A. A. Valenzuela, F. Fox, H. Behner: Microwave properties of structured YBa2Cu3O7−x thin films.
doi:10.1016/0925-8388(93)90802-T BibTeX | RIS

1992

A. A. Valenzuela, G. Sölkner, J. Kessler, P. Russer: Surface resistance and magnetic penetration depth of structured YBa2Cu3O7-x-thin films.
BibTeX | RIS

A. A. Valenzuela: High temperature superconducting high frequency devices.
BibTeX | RIS

Robert Weigel, Alejandro A. Valenzuela, Peter H. Russer: YBCO Superconducting Microwave Oscillator.
BibTeX | RIS

Alejandro A. Valenzuela, M. Nalezinski, Robert Weigel, B. Daalmans, Peter H. Russer: Transmission Line filters with High Tc Superconducters.
BibTeX | RIS

Peter H. Russer, Alejandro A. Valenzuela: Linear Passive Microwave Circuits with High Temperatur Superconductors.
BibTeX | RIS

W. Rauch, A. A. Valenzuela, G. Sölkner, H. Behner, G. Gieres, E. Gornik: Microstrip transmission line resonator with epitaxial YBa2Cu3O7-x/NdAIO3/YBa2Cu2O7-x trilayer.
doi:10.1049/el:19920365 BibTeX | RIS

W. Rauch, H. Behner, G. Gieres, G. Sölkner, F. Fox, A. A. Valenzuela, E. Gornik: DC-magnetron sputtering of YBa2Cu3O7−δ thin films for microwave applications.
doi:10.1016/0921-4534(92)90218-2 BibTeX | RIS

Roland Ramisch, Ralf Klieber, Martin H. Schwab, Alejandro A. Valenzuela, Robert Weigel, Peter H. Russer: On the design and performance of a hybrid-integrated high-T c superconducting C-band oscillator.
BibTeX | RIS

J. Kraus, G. Soelkner, A. A. Valenzuela: An electro-optic laser probe at low temperature for the characterization of planar integrated microwave resonators.
doi:10.1016/0167-9317(92)90354-T BibTeX | RIS

R. Klieber, R. Ramisch, R. Weigel, M. Schwab, A. A. Valenzuela, R. Dill, P. Russer: Single-Substrate High-Tc Superconducting Coplanar Oscillator at 6.5 GHz.
doi:10.1109/APMC.1992.671974 BibTeX | RIS

R. Klieber, R. Ramisch, A. A. Valenzuela, R. Weigel, P. Russer: A coplanar transmission line high-T/sub c/ superconductive oscillator at 6.5 GHz on a single substrate.
doi:10.1109/75.109131 BibTeX | RIS

1991

R. Klieber, R. Ramisch, R. Weigel, M. Schwab, R. Dill, A. A. Valenzuela, P. Russer: High-temperature superconducting resonator-stabilized coplanar hybrid-integrated oscillator at 6.5 GHz.
BibTeX | RIS

J. Keßler, P. Russer, R. Dill, A. A. Valenzuela: Characterization of high-Tc superconducting coplanar structures by a partial wave synthesis.
BibTeX | RIS

J. Keßler, R. Dill, P. Russer, A. A. Valenzuela: Analyse von koplanaren Resonatoren aus hochtemperatur-supraleitenden Dünnfilmen.
BibTeX | RIS

G. Gieres, B. Roas, P. Russer, G. Sölkner, A. A. Valenzuela, E. Wolfgang: Planar resonators for the characterization of high-Tc thin films.
BibTeX | RIS

G. Gieres, J. Kessler, J. Kraus, B. Roas, P. Russer, G. Soelkner, A. A. Valenzuela: High-frequency characterization of YBa 2 Cu 3 O 7-x thin films with coplanar resonators.
doi:10.1088/0953-2048/4/11/020 BibTeX | RIS

1990

Alejandro A. Valenzuela: Testchip für passive Bauelemente der Hochfrequenztechnik.
BibTeX | RIS

A. A. Valenzuela, B. Roas, P. Prieto, U. Poppe, B. Daalmans, G. Sölkner, E. Wolfgang: Koplanare Leitungsresonatoren hoher Güte aus YBa2Cu3O7-x.
BibTeX | RIS

A. A. Valenzuela, G. Daalmans, R. Dill, P. Russer, L. Schultz, G. Sölkner, E. Wolfgang: Testchip for high temperature superconductor passive devices.
BibTeX | RIS

J. Kebler, R. Dill, P. Russer, A. A. Valenzuela: Property Calculations of a Superconducting Coplanar Waveguide Resonator.
doi:10.1109/EUMA.1990.336141 BibTeX | RIS

R. Dill, J. Otto, G. Riha, P. Russer, L. Schultz, G. Sölkner, A. A. Valenzuela, E. Wolfgang: Testchip for high temperature superconductor passive devices.
doi:10.1109/MWSYM.1990.99715 BibTeX | RIS

B. Daalmans, G. Sölkner, A. A. Valenzuela, E. Wolfgang: Passive high-Tc components.
BibTeX | RIS

1989

A. A. Valenzuela: Entwicklung von Mikrowellenbauelementen aus Hochtemperatur-Supraleitern.
BibTeX | RIS

A. A. Valenzuela, P. Russer: High Q coplanar transmission line resonator of YBa 2 Cu 3 O 7− x on MgO.
doi:10.1063/1.101576 BibTeX | RIS

A. A. Valenzuela, B. Daalmans, B. Roas: High-Q coplanar transmission line resonator of YBa2Cu3O7−x on LaAlO3.
doi:10.1049/el:19890958 BibTeX | RIS

A. A. Valenzuela: Koplanare Resonanzstrukturen aus Hochtemperatursupraleitern.
BibTeX | RIS

1988

J. Hausner, G. R. Olbrich, P. Russer, A. A. Valenzuela: Nonlinear Approach for the Optimization of a DRO at 10.4GHz.
doi:10.1109/EUMA.1988.333827 BibTeX | RIS