Knowledge Centre
Find a document written by the best international scientists in our secure database.
24776 documents found.
Antenna Coupling Effect on the Characteristics of On-Channel-Repeater
Antenna Coupling Effect on the Characteristics of On-Channel-Repeater Sanggee Kang, Hyukje Kim, Myungsun Song, Seongyoung Hong* Electronics and Telecommunication Research Institute, * Chungnam National Univ. Abstract OCR(On channel repeater) has the advantages of the frequency efficiency because the frequency of the input signal and output signal is same. The oscillation probability of OCRs is hi
New Receiver Front-End Using BPSK to ASK conversion
New Receiver Front-End Using BPSK to ASK conversion J.A. Osorio1, J.G Macias1, J. Cabanillas1, J. J. Sieiro1, N. Vidal2, J. Samitier1 and J.M. López-Villegas1 1 University of Barcelona, Department of Electronics, Martí i Franqués 1, 08028 Barcelona, SPAIN, josem@el.ub.es 2 Escola Universitaria Salesiana de Sarrià (EUSS), Passeig Sant Joan Bosco 74, 08017 Barcelona, SPAIN Abstract -- This work pr
An experimental frequency converter for DVB-T transmitter tests
An experimental frequency converter for DVB-T transmitter tests Ville-Hermanni Kilpi¨ 1 and Pekka Eskelinen2 a 1 Helsinki University of Technology, Department of Electrical and Communications Engineering, Radio Laboratory Po. box 3000, FIN-02015 TKK, Finland Tel: +358 9 451 61 41, E-Mail: vkilpia@cc.hut.fi 2 Helsinki University of Technology, Institute of Digital Communications Po. box 3000, FIN
Precise Local Positioning Radar with implemented Extended Kalman filter.
T4A.2 Precise Local Positioning Radar with implemented Extended Kalman filter. L. Wiebking(2), M. Vossiek(2), L. Reindl(1), M. Christmann(2), D. Mastela(1) (1) Institute of Electrical Engineering, D-38678 Clausthal (2) Siemens AG, D-81730 München , Germany E-mail: leif.wiebking@siemens.com Abstract In this paper a novel solution for the tracking of a moving object based on Kalman-filtering is
Spread Spectrum Data Transmission at Low Signal Power with a Short-Range Wireless Link at 24 GHz
Spread Spectrum Data Transmission at Low Signal Power with a Short-Range Wireless Link at 24 GHz S. Lindenmeier, A. Terzis, J.F. Luy DaimlerChrysler Research and Technology, Wilhelm-Runge-Str.11, 89081 Ulm ,Germany, +49-(0)731-505-2024, stefan.lindenmeier@daimlerchrysler.com Abstract -- A DSSS-concept for robust wireless data transmission is investigated in order to suppress spurious narrow band
The Influence of User Frequency Offset on the Up-link Performance of SS-MC-MA
The Influence of User Frequency Offset on the Up-link Performance of SS-MC-MA Alexander Arkhipov, Michael Schnell German Aerospace Center (DLR), Inst. of Communications and Navigation, D-82234, Wessling, Germany, Phone: +49-8153-282873, alexander.arkhipov@dlr.de /Phone: +49-8153-282858, michael.schnell@dlr.de Abstract-- In this paper, we investigate the influence of Doppler induced user frequency
Optimization of a Frequency and Polarization Scheme for LMDS at 28 GHz
Optimization of a Frequency and Polarization Scheme for LMDS at 28 GHz G. Bauer, T. Gomber, R. Jakoby Technische Universität Darmstadt, Institut für Hochfrequenztechnik Merckstraße 25, 64283 Darmstadt, Germany. Phone: +49-6151-165161 Abstract -- For Local Multipoint Distribution Systems (LMDS) operating in frequency bands between 26 and 43 GHz a regular network of squared cells with a dual frequen
The Quantitative Assessment of the Effects of Dissipative Loading on the Time-Domain Performance of Antennas
The Quantitative Assessment of the Effects of Dissipative Loading on the Time-Domain Performance of Antennas James McLean1, Heinrich Foltz2, Robert Sutton1, 2 TDK R. & D. Corp., 1101 Cypress Creek Road, Cedar Park, Texas, 78613, USA, +1 512 258 9478 Univ. of Texas-Pan American, Dept. of Elect. Eng., 1201 W. University, Edinburg, Texas USA, +1 956 384 5016 waveform cannot be preserved. Algorithms
An Overview of Modeling of Ultra Wide Band Indoor Channels
An Overview of Modeling of Ultra Wide Band Indoor Channels Z. Irahhauten, H. Nikookar and G. Janssen Center for Wireless Personal Communications (CWPC) Department of Electrical Engineering, Mathematics and Computer Science-Delft University of Technology Mekelweg 4, 2628 CD Delft, The Netherlands Phone:+31-15-278 13 89, Fax: +31-15-278 40 46 Email: {Z.Irahhauten, H.Nikookar, G.Janssen}@EWI.tudelft.
Wireless IP Access System for low cost FWA services
Wireless IP Access System for low cost FWA services Tetsuya Shirouzu1, Katsutoshi Nidaira1, Mitsuhiro Baba1, Toshio Saitoh1 1 NTT Corporation, NTT Access Network Service Systems Laboratories, 1-1 Hikari-no-oka, Yokosuka city, Kanagawa, 239-0847, Japan, +81 46 859 3312 cost of WIPAS equipment is approximately 1/10 as that of conventional FWA system, and its weight is approximately 1/5 as that of c