Sample records for RADIORECEPTORES (radio receivers)
from WorldWideScience.org

Sample records 1 - 11 shown.



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)

3

Systematic Design of CMOS Switched-Current Bandpass Sigma-Delta Modulators for Digital Communication Chips

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Rodríguez Vázquez, Angel
2002-01-01

Digital.CSIC (Spain)

4

Switched-Current Bandpass Sigma-Delta Modulators for AM Digital Radio Receivers

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Angel

This paper discusses the use of switched-current (SI) circuits to design Band-Pass ΣΔ Modulators (BP-ΣΔMs) suitable for AM digital radio receivers. First of all, the paper briefly outlines the concept and principles of BP-ΣΔMs, and introduces two modulator architectures which are obtained by applyin...

DRIVER (Spanish)

5

Switched-Current Bandpass Sigma-Delta Modulators for AM Digital Radio Receivers

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Angel
2001-11-01

Digital.CSIC (Spain)

6

Dissociative Shocks in the Neighborhood of Orion IRc2 Traced with Atomic Carbon

Pardo Carrión, Juan Ramón; Cernicharo, José; Phillips, Thomas G.
2005-11-20

Digital.CSIC (Spain)

7

Behavioral Modeling, Simulation and Synthesis of Multi-Standard RF Transceivers in MATLAB/SIMULINK

Morgado, Alonso; Rivas, Vicente J.; Río Fernández, Rocío del; Castro López, Rafael; Fernández, Francisco V.
2008-02-01

Digital.CSIC (Spain)

8

BandPass Sigma-Delta Analog-to-Digital Converters

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Angel
2003-01-01

Digital.CSIC (Spain)

9

Age, growth and mortality of the toadfish, Halobatrachus didactylus (Schneider, 1801) (Pisces: Batrachoididae), in the Bay of Cádiz (southwestern Spain)

Palazón Fernández, Josè Luis; Potts, Jennifer C.; Manooch III, Charles S.; Sarasquete, M.ª Carmen
2010-03-30

Digital.CSIC (Spain)

10

A SIMULINK Block Set for the High-Level Simulation of Multistandard Radio Receivers

Morgado, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la

DRIVER (Spanish)

11

A SIMULINK Block Set for the High-Level Simulation of Multistandard Radio Receivers

Morgado, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la
2007-05-01

Digital.CSIC (Spain)