Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Leo Van Biesen"'
A mixer is a device whose output frequency is a sum or a difference of input frequencies. With f1 and f2 as input frequencies, the output frequency is f1+f2 or |f1-f2|. The mixer is generally an analogue device. In this work, we suggest a digital mix
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c90d2f52ac727b3bdd82c286a01e86a8
https://hdl.handle.net/20.500.14017/baebc1cc-8cc9-488d-a94d-dd7c78e422af
https://hdl.handle.net/20.500.14017/baebc1cc-8cc9-488d-a94d-dd7c78e422af
Publikováno v:
Vrije Universiteit Brussel
This paper shows how to measure high frequency angle modulated digital signals using a relatively low frequency spectrum analyzer and a digital frequency divider. The mathematical proof is based on comparison of the signal spectrum before and afther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f4e0a7d960794c00b32ae01f460670c6
https://biblio.vub.ac.be/vubir/power-spectrum-measurement-of-high-frequency-angle-modulated-digital-signal-from-ouput-power-spectrum-of-a-digital-divider(ac1a71eb-6e66-49a6-b321-3ac36365d851).html
https://biblio.vub.ac.be/vubir/power-spectrum-measurement-of-high-frequency-angle-modulated-digital-signal-from-ouput-power-spectrum-of-a-digital-divider(ac1a71eb-6e66-49a6-b321-3ac36365d851).html
Publikováno v:
2016 International Conference on Advanced Technologies for Communications (ATC).
The increasing demand for wider bandwidth in the current wireless networks and the need to work simultaneously with different networks impose many design challenges for power amplifiers (PA) design and the digital predistortion (DPD) in many aspects.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cbc36f70d69f598946267eb38e5e8bc
https://doi.org/10.1109/atc.2016.7764777
https://doi.org/10.1109/atc.2016.7764777
Publikováno v:
Vrije Universiteit Brussel
Increasing transmission speed has always been the target for any telecommunication system. For that purpose, LTE-Advanced adopted components carrier aggregation. Up to 5 components carrier can be aggregated (in 3GPP Release 10), and with 20 Mhz bandw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e4c48092edeb060d4ef1eb256fd4be4d
https://biblio.vub.ac.be/vubir/issues-of-carrier-aggregation-intermodulation-distortions-in-lteadvanced-system(b41676a7-6f6f-42f1-b081-05f801b5d958).html
https://biblio.vub.ac.be/vubir/issues-of-carrier-aggregation-intermodulation-distortions-in-lteadvanced-system(b41676a7-6f6f-42f1-b081-05f801b5d958).html
Autor:
Hernan Cordova, Leo Van Biesen
Publikováno v:
International Journal of Applied Metaheuristic Computing. 2:29-40
One of the major sources of performance degradation of current Digital Subscriber Line systems is the electromagnetic coupling among different twisted pairs within the same cable bundle (crosstalk). Several algorithms for Dynamic Spectrum management
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cb06cced960767e6db78e9005b5727a
https://doi.org/10.4018/jamc.2011100103
https://doi.org/10.4018/jamc.2011100103
Publikováno v:
Journal of Computational Acoustics. :461-476
In this work, the analytical and experimental examination of the problem of diffraction effect is treated. In the laboratory, the diffraction phenomena have been mainly due to the beam spread of the ultrasonic plane wave propagating through a viscoel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c17b54559e900338e1d7e6a38c320d0a
https://doi.org/10.1142/s0218396x01000735
https://doi.org/10.1142/s0218396x01000735
Publikováno v:
The Journal of the Acoustical Society of America. 99:426-432
In this paper, an identification approach is introduced for the parametric calibration of electroacoustic transducers. The method is based on the conventional substitution technique for hydrophone calibration and a parametric estimation technique for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::668156fcf911f33c3b1c89eee3f1c85b
https://doi.org/10.1121/1.414554
https://doi.org/10.1121/1.414554
Autor:
Hernan X. Cordova, Leo Van Biesen
One of the major sources of performance degradation of current Digital Subscriber Line systems is the electromagnetic coupling among different twisted pairs within the same cable bundle (crosstalk). Several algorithms for Dynamic Spectrum management
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e24aab767cd6be1e32744e65200ce20f
https://doi.org/10.4018/978-1-4666-2145-9.ch003
https://doi.org/10.4018/978-1-4666-2145-9.ch003
Autor:
Leo Van Biesen
Publikováno v:
Measurement. 13:257-266
This paper deals with the trends in computer-controlled measurement instruments with respect to the ability to interface to small computers and with the applicability of AI-techniques in building expert systems capable of solving measurement problems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::324a8f6252dea061e428a8c5007ec7d3
https://doi.org/10.1016/0263-2241(94)90050-7
https://doi.org/10.1016/0263-2241(94)90050-7
Autor:
Leo Van Biesen, Hernan Cordova
Publikováno v:
PIMRC
Bit and power allocation remains a challenge in multiuser multicarrier systems though optimal and suboptimal algorithms have been proposed. In this paper, we optimize the multiuser bit removal greedy algorithm by allowing removing bits in parallel, s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8859860e2280f943e044daed1317614a
https://doi.org/10.1109/pimrc.2011.6139725
https://doi.org/10.1109/pimrc.2011.6139725