| Texto completo | |
| Autor(es): |
Magalhaes Afonso, Rubens Junqueira
[1]
;
Harrop Galvao, Roberto Kawakami
[1]
;
Kienitz, Karl Heinz
[1]
;
Alyami, Hashem
[2]
;
Becerra, Victor M.
[2, 3]
;
Hadjiloucas, Sillas
[2]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Inst Tecnol Aeronaut, Div Engn Eletron, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[2] Univ Reading, Sch Syst Engn, Reading RG6 6AY, Berks - England
[3] Univ Portsmouth, Sch Engn, Anglesea Bldg, Anglesea Rd, Portsmouth PO1 3DJ, Hants - England
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | OPTICAL AND QUANTUM ELECTRONICS; v. 48, n. 7 JUL 2016. |
| Citações Web of Science: | 1 |
| Resumo | |
Multi-path propagation is modelled assuming a multi-layer RC network with randomly allocated resistors and capacitors to represent the transmission medium. Due to frequency-selective attenuation, the waveforms associated with each propagation path incur path-dependent distortion. A pre-equalization procedure that takes into account the capabilities of the transmission source as well as the transmission properties of the medium is developed. The problem is cast within a Mixed Integer Linear Programming optimization framework that uses the developed nominal RC network model, with the excitation waveform customized to optimize signal fidelity from the transmitter to the receiver. The objective is to match a Gaussian pulse input accounting for frequency regions where there would be pronounced fading. Simulations are carried out with different network realizations in order to evaluate the sensitivity of the solution with respect to changes in the transmission medium mimicking the multi-path propagation. The proposed approach is of relevance where equalization techniques are difficult to implement. Applications are discussed within the context of emergent communication modalities across the EM spectrum such as light percolation as well as emergent indoor communications assuming various modulation protocols or UWB schemes as well as within the context of space division multiplexing. (AU) | |
| Processo FAPESP: | 11/13777-8 - Espectroscopia terahertz no domínio do tempo: desenvolvimento de métodos analíticos, técnicas de processamento de sinais, estudos bioquímicos e fundamentais |
| Beneficiário: | Celio Pasquini |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 11/17610-0 - Monitoramento e controle de sistemas dinâmicos sujeitos a falhas |
| Beneficiário: | Roberto Kawakami Harrop Galvão |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 11/18632-8 - Controle Preditivo tolerante a falhas com planejamento de trajetórias na presença de obstáculos |
| Beneficiário: | Rubens Junqueira Magalhães Afonso |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |