About: Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Abstract - radiotransmitters capable to transform variable envelope signals into constant envelope signals can be associated with high-efficiency switched-mode power amplifiers. One of the techniques providing this conversion is Polar Sigma-Delta architecture. This approach provides efficient solution for high-dynamic signals and moreover, it offers flexibility in a multi-radio environment. The overall concept of the polar transmitter is presented here along with novel modifications and improvements. Namely, when recombining the envelope and the phase signals, it is suggested to replace the analog mixing by a digital mixing. The impact of a frequency synthesizer with a switched loop bandwidth and its imperfections on the overall polar architecture is investigated as well. The Mobile WiMAX standard has been chosen for validation due to very high requirements in terms of power dynamics and the variable channel bandwidth. Simulation results are presented in this paper and advantages and drawbacks of thi Abstract - radiotransmitters capable to transform variable envelope signals into constant envelope signals can be associated with high-efficiency switched-mode power amplifiers. One of the techniques providing this conversion is Polar Sigma-Delta architecture. This approach provides efficient solution for high-dynamic signals and moreover, it offers flexibility in a multi-radio environment. The overall concept of the polar transmitter is presented here along with novel modifications and improvements. Namely, when recombining the envelope and the phase signals, it is suggested to replace the analog mixing by a digital mixing. The impact of a frequency synthesizer with a switched loop bandwidth and its imperfections on the overall polar architecture is investigated as well. The Mobile WiMAX standard has been chosen for validation due to very high requirements in terms of power dynamics and the variable channel bandwidth. Simulation results are presented in this paper and advantages and drawbacks of thi (en)
Title	Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications (en)
skos:prefLabel	Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications (en)
skos:notation	RIV/00216305:26220/10:PU88059!RIV11-GA0-26220___
http://linked.open...avai/riv/aktivita	P R S Z
http://linked.open...avai/riv/aktivity	P(GA102/09/0776), P(GD102/08/H027), P(OC09016), R, S, Z(MSM0021630513)
http://linked.open...iv/cisloPeriodika	2010
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Maršálek, Roman Valenta, Václav Baudoin, Genevieve
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	272252
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/10:PU88059
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sigma delta transceiver, multi-radio (en)
http://linked.open.../riv/klicoveSlovo	multi-radio sigma delta transceiver
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[E7C4DDD6CCCB]
http://linked.open...i/riv/nazevZdroje	EURASIP Journal on Wireless Communications and Networking
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Algorithms and subsystems for software defined and cognitive multicarrier radio Advanced Methods, Structures and Components of Electronic Wireless Communication Components of advanced radio-communication systems (CARS)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	2010
http://linked.open...iv/tvurceVysledku	Maršálek, Roman Valenta, Václav Baudoin, Genevieve Villegas, Martine SUAREZ PENALOZA, Martha Liliana
http://linked.open...n/vavai/riv/zamer	Advanced Electronic Communication Systems and Technologies (ELCOM)
issn	1687-1499
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	26220

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