Sample records for CORRIMIENTO ESPECTRAL (spectral shift)
from WorldWideScience.org

Sample records 1 - 20 shown. Select sample records:



1

Estudio y comparación en eficiencia espectral y probabilidad de error de los esquemas de modulación GMSK y DBPSK/ Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes

Torres Nova, Juan Mario; Paz Penagos, Hernán
2008-12-01

Resumen en español GMSK (Gaussian Minimum Shift Keying) y DBPSK (Differential Binary Phase Shift Keying) son dos esquemas de modulación digital usados frecuentemente en los sistemas de comunicaciones vía radio; sin embargo, existe interdependencia en el aprovechamiento de sus beneficios (eficiencia espectral, baja tasa de error de bit, baja interferencia intersímbolos, etc.); es decir, la optimización de un parámetro acarrea problemas en otro; por ejemplo, el esquema GMSK logra reducir (mas) el ancho de banda al introducirle un filtro gaussiano a un modulador MSK (Minimum Shift keying) a cambio de incrementar la interferencia intersímbolos en el sistema. Por su parte, el esquema DBPSK obtiene menor probabilidad de error, ocupando mayor ancho de banda; así mismo, facilita la transmisión de los datos de forma síncrona debido al retardo de un bit que tiene el receptor al recuperar la señal. Resumen en inglés Gaussian minimum shift keying (GMSK) and differential binary phase shift keying (DBPSK) are two digital modulation schemes which are -frequently used in radio communication systems; however, there is interdependence in the use of its benefits (spectral efficiency, low bit error rate, low inter symbol interference, etc). Optimising one parameter creates problems for another; for example, the GMSK scheme succeeds in reducing bandwidth when introducing a Gaussian filter into (mas) an MSK (minimum shift keying) modulator in exchange for increasing inter-symbol interference in the system. The DBPSK scheme leads to lower error probability, occupying more bandwidth; it likewise facilitates synchronous data transmission due to the receiver’s bit delay when recovering a signal.

Scientific Electronic Library Online (Spanish)

2

Unparticles-Higgs Interplay

Delgado, Antonio; Espinosa, José Ramón; Quirós, Mariano
2007-08-13

Digital.CSIC (Spain)

3

Tuning of spontaneous emission of two-dimensional photonic crystal microcavities by accurate control of slab thickness

Alija, Alfonso R.; Martínez Rodríguez, Luis Javier; García-Martín, Antonio; Dotor, María Luisa; Golmayo, Dolores; Postigo, Pablo Aitor
2005-03-29

Digital.CSIC (Spain)

4

The structure and function of the LH2 (B800–850) complex from the purple photosynthetic bacterium Rhodopseudomonas acidophila strain 10050

Cogdell, Richard J.; Isaacs, Neil W.; Freer, Andy A.; Arellano, Juan B.; Howard, Tina D.; Papiz, Miroslav Z.; Hawthornthwaite-Lawless, Anna; Prince, Stephen
1997-01-01

Digital.CSIC (Spain)

5

Supercontinuum generation using raman pumped optical cavity

Harper, Paul; Karalekas, Vasileios; El-Taher, Atalla; Ania Castañón, Juan Diego
2010-03-04

Digital.CSIC (Spain)

6

Supercontinuum generation from intense partially coherent laser beams in optical fibers

Corredera, P.; Martín-López, S.; González-Herráez, M.
2009-01-01

Digital.CSIC (Spain)

9

Spectral, Photophysical, and Stability Properties of Isolated Photosystem II Reaction Center

Seibert, Michael; Picorel Castaño, Rafael; Rubin, Andrew B.; Connolly, John S.
1988-06-01

Digital.CSIC (Spain)

11

Selective photobleaching of chlorophylls and carotenoids in Photosystem I particles under high-light treatment

Andreeva, Atanaska; Abarovaа, Silvia; Stoitchkovaa, Katerina; Picorel Castaño, Rafael; Velitchkova, Maya
2007-01-06

Digital.CSIC (Spain)

12

Probing Nanocavities with Proton-Transfer Fluorescence

Douhal, Abderrazzak; Amat-Guerri, Francisco; Acuña Fernandez, Alberto Ulises
1997-01-01

Digital.CSIC (Spain)

13

Polar di-halogen molecules solvated in bosonic helium clusters: The paradigm of ICl(X)

Lara Castells, M. Pilar de; Prosmiti, Rita; Delgado Barrio, Gerardo; López Durán, David; Villarreal, Pablo

11 pages, 6 figures, 5 tables.-- PACS nrs.: 36.40.Mr; 31.15.Ar; 33.20.Fb; 33.80.Gj. | Energies and structures of 4He(N)-ICl(X) complexes, N ≤ 30, are determined within the framework of a recently developed Hartree-like approach [Phys. Rev. A 71, 033203 (2005)], in which the He atoms play the role of...

DRIVER (Spanish)

14

Polar di-halogen molecules solvated in bosonic helium clusters: The paradigm of ICl(X)

Lara Castells, M. Pilar de; Prosmiti, Rita; Delgado Barrio, Gerardo; López Durán, David; Villarreal, Pablo; Gianturco, Franco Antonio; Jellinek, J.
2006-11-28

Digital.CSIC (Spain)

15

Parameters of the Protein Energy Landscapes of Several Light-Harvesting Complexes Probed via Spectral Hole Growth Kinetics Measurements

Herascu, Nicoleta; Najafi, Mehdi; Amunts, Alexey; Pieper, Joerg; Irrgang, Klaus-Dieter; Picorel Castaño, Rafael; Seibert, Michael; Zazubovich, Valter
2011-03-10

Digital.CSIC (Spain)

16

Nonlocal effects in the plasmons of nanowires and nanocavities excited by fast electron beams

Aizpurúa, Javier; Rivacoba, Alberto

14 pp.-- PACS: 73.20.Mf, 79.20.Uv, 68.37.Lp, 78.70.-g. | The solutions of surface modes in cylindrical metallic wires and cavities are obtained within a nonlocal dielectric formalism. We compare the results with those obtained from standard local approaches. The specular reflection model is applied ...

DRIVER (Spanish)

18

New contributions on image fusion and compression based on space-frequency representations

Cristóbal Pérez, Gabriel; Ledesma, María Jesús; Redondo, Rafael
2007-04-20

Digital.CSIC (Spain)

19

Mössbauer spectral study of RFe11.3W0.7 compounds (R=Dy, Ho, Er, and Lu)

Lazar, D. P.; Plugaru, N.; Kuncser, Victor; Valeanu, M.; Filoti, George; Bartolomé, Juan; Rubín, Javier
2006-07-01

Digital.CSIC (Spain)

20

Multiwavelength observations of the energetic GRB 080810: detailed mapping of the broad-band spectral evolution

Page, K. L.; Willingale, R.; Bissaldi, E.; Ugarte Postigo, A. de; Holland, S. T.; McBreen, S.; O’Brien, P. T.; Osborne, J. P.; Prochaska, J. X.; Rol, E.; Rykoff, E. S.; Starling, R. L. C.; Tanvir, N. R.; Van der Horst, A. J.; Wiersema, K.; Zhang, B.; Aceituno, Francisco José; Akerlof, C.; Beardmore, A. P.; Briggs, M. S.; Burrows, D. N.; Castro-Tirado, Alberto J.; Connaughton, V.; Evans, P. A.; Fynbo, J. P. U.; Gehrels, N.; Guidorzi, C.; Howard, A. W.; Kennea, J. A.; Kouveliotou, C.; Pagani, C.; Preece, R.; Perley, D.; Steele, I. A.; Yuan, F.
2009-09-01

Digital.CSIC (Spain)

22

Microstructural analysis of nickel hydroxide: Anisotropic size versus stacking faults

Casas Cabanas, Montse; Palacín, M. R.; Rodríguez-Carvajal, Juan
2005-12-01

Digital.CSIC (Spain)

23

Highly fluorescent crystalline and liquid crystalline columnar phases of pyrene-based structures

Hayer, Anna; Halleux, Véronique de; Köhler, Anna; El-Garoughy, Abdel; Meijer, E. W.; Barberá, Joaquín; Tant, Julien; Levin, Jeremy; Lehmann, Matthias; Gierschner, Johannes; Cornil, Jérôme; Henri Geerts, Yves
2006-03-29

Digital.CSIC (Spain)

26

Experimental Study on the Role of Chromatic Dispersion in Continuous-Wave Supercontinuum Generation

Abrardi, Laura; Martín-López, Sonia; Carrasco-Sanz, Ana; Rodríguez-Barrios, Félix; Corredera, Pedro; Hernanz, Mª Luisa; González-Herráez, Miguel
2009-02-15

Digital.CSIC (Spain)

27

Evaluation of performance in some ultrasonic procedures for non-invasive thermal estimation into hyperthermia phantoms

Bazán, I.; Ramos, Antonio; Vázquez Valero, Manuela; Vera, A.; Leija, Lorenzo
2008-07-01

Digital.CSIC (Spain)

29

Characteristics of Modified Leghemoglobins Isolated from Soybean (Glycine max Merr.) Root Nodules

Jun, H. K.; Sarath, G.; Morán, José F.; Becana Ausejo, Manuel; Klucas, R. V.; Wagner, F. W.
1994-04-01

Digital.CSIC (Spain)

30

An overview on potential energy surfaces of rare-gas dihalogen van der Waals clusters

Delgado Barrio, Gerardo; Prosmiti, Rita; Valdés, Álvaro; Villarreal, Pablo
2006-01-01

Digital.CSIC (Spain)

31

Ab initio potential energy surface and spectrum of the B(3Π) state of the HeI2 complex

Valdés, Álvaro; Prosmiti, Rita; Villarreal, Pablo; Delgado Barrio, Gerardo; Werner, Hans-Joachim

9 pages, 6 figures, 4 tables.-- PACS nrs.: 31.15.Ar; 31.50.-x; 33.50.Dq; 33.15.Bh; 31.15.Dv; 33.70.Jg. | The three-dimensional interaction potential for I2(B 3Π0(u)+)+He is computed using accurate ab initio methods and a large basis set. Scalar relativistic effects are accounted for by large-core re...

DRIVER (Spanish)

32

Ab initio potential energy surface and spectrum of the B(3Π) state of the HeI2 complex

Valdés, Álvaro; Prosmiti, Rita; Villarreal, Pablo; Delgado Barrio, Gerardo; Werner, Hans-Joachim
2007-05-22

Digital.CSIC (Spain)

33

A theoretical approach to the vibrational analysis of the nitroenamine system

Chiara, José Luis; Gómez-Sánchez, Antonio; Sánchez Marcos, Enrique
1990-01-01

Digital.CSIC (Spain)