Artículo
Alias-free digital click modulator
Fecha de publicación:
05/2013
Editorial:
Ieee-inst Electrical Electronics Engineers Inc
Revista:
Ieee Transactions On Industrial Informatics
ISSN:
1551-3203
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
An alias-free, discrete-time click modulator is developed in this paper. Previous approaches rely on translating the continuous-time click modulator to a discrete-time setting, although a key component in the click modulator—the analytic exponential modulator-cannot be exactly transformed to the discrete domain. Every discrete-time version of the click modulator reported in the literature is prone to aliasing effects that are ameliorated, but not eliminated, using interpolation techniques. The precision of the switching times of the output square wave is critical to click modulation because uncertainties in their determination adversely affect the performance and SNR of the modulator. A novel method that uses frequency domain information to compute these switching times without error is also presented. This two techniques are used to develop an off-line discrete-time click modulator that achieves a SNR larger than 180 dB for both multitonal and bandpass signals.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IIIE)
Articulos de INST.DE INVEST.EN ING.ELECTRICA "A.DESAGES"
Articulos de INST.DE INVEST.EN ING.ELECTRICA "A.DESAGES"
Citación
Stefanazzi, Leandro; Oliva, Alejandro Raul; Paolini, Eduardo Emilio; Alias-free digital click modulator; Ieee-inst Electrical Electronics Engineers Inc; Ieee Transactions On Industrial Informatics; 9; 2; 5-2013; 1074-1083
Compartir