Encontrados 5 documentos, a visualizar página 1 de 1
Electronic Circuits for Wireless Optical LANs - I
Rui L. Aguiar; António Tavares; José Luis Cura; Eduardo de Vasconcelos; Luis Nero Alves; Rui Valadas; Dinis M. SantosThis is the first of two papers discussing practical issues and results on the implementation of low-cost transceivers for several wireless optical LANs, covering most physical layer elements.Target optical LANs under consideration have bit-rates varying between 4Mbps and 25Mbps, and input photodiode capacitance may vary between 10pF and 50pF. PPM modulation, either in a 4-PPM or 1...
Electronic Circuits for Wireless Optical LANs - II
Rui L. Aguiar; António Tavares; José Luis Cura; Eduardo de Vasconcelos; Luis Nero Alves; Rui Valadas; Dinis M. SantosThis is the second of two papers discussing practical issues and results on the implementation of low-cost transceivers for several wireless optical LANs, covering most physical layer elements.Target optical LANs under consideration have bit-rates varying between 4Mbps and 25Mbps, and input photodiode capacitance may vary between 10pF and 50pF. PPM modulation, either in a 4-PPM or ...
Sistema de Transmissão para Fibra Óptica a 622Mb/s
António Maria Sarsfield; Eduardo de Vasconcelos; Rui Aguiar; Dinis Magalhães dos SantosThe article discusses the implementation of an optical fiber transmission system, witch suports rates of 622 Mb/s (OC-12). The circuit was developed in a CMOS technology of 1.0μm (ES2). It implements the necessary serial-to-parallel and parallel-to-serial conversions. This ASIC designed in Full Custom is particulary suitable for SONET/SDH (STM-4) based applications. ; O artigo ...
Instituições fortes, moeda estável e Banco Central do Brasil autônomo
Raposo,Eduardo de Vasconcelos; Kasahara,YuriThe article discusses the autonomy of Brazil's Central Bank and its potential relationship to the national currency's stability. Beyond the government budget balance and the Central Bank's autonomy, we seek to demonstrate that the currency's stability also depends on the Bank's own political and institutional stability. Due to a gap in the literature, which has focused little attention on the political conditio...
A systematic model for evaluation activity and software testing
Eduardo de Vasconcelos SilvaA atividade da escrita de casos de testes para software é em sua essência não determinística e por conseguinte envolve riscos. Por outro lado, o grau de densidade de testes dos requisitos do sistema sofre influência da forma que esses requisitos são interpretados. Uma proposta para sistematizar o processo de criação de casos de teste encontra-se no uso de uma rede Bayesiana que modela a arquitetura de testes a ...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||