Non Linearity Transponders
Mostrando 1-2 de 2 artigos, teses e dissertações.
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1. REDUCTION OF NON LINEARITY EFFECTS ON OFDM SIGNALS: A PRE-DISTORTION SCHEME BASED ON POWER SERIES / REDUÇÃO DOS EFEITOS DE CANAIS NÃO-LINEARES SOBRE SINAIS OFDM: UM ESQUEMA DE PRÉ-DISTORÇÃO NÃO-LINEAR BASEADO EM SÉRIE DE POTÊNCIAS
The main problems of multiple carriers through non-linear devices are, AM / PM conversion, conversion AM / PM conversion, and intermodulation. These problems are usually present in satellite transmissions, where high-power amplifiers (HPAs) and nonlinear transponders are used, as well as in terrestrial broadcasting systems where, in order to enlarge the serv
Publicado em: 2008
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2. Estudo Analítico e numérico de um enlace digital de comunicação via satélite em condição orbital geo-estacionária / Analytical and numerical analysis of a digital communication geostationary satellite link.
The links of satellites are affected by propagation conditions and distortions that are generated by devices. The propagation losses as well as the passive components attenuation are very simple to analyze, but many calculations involved with the complete link demand to discover the carrier to inter-modulation ratio. This work presents an innovative set of e
Publicado em: 2004