Zobrazeno 1 - 10 of 10 pro vyhledávání: '"M N, Vieira"'
2
Doppler resilient modulation in a CDMA-based acoustic local positioning system
Autor: J. M. N. Vieira, Sérgio I. Lopes, Daniel Albuquerque, Teodoro Aguilera, Fernando Alvarez
Publikováno v: IPIN
This paper proposes a Doppler resilient modulation approach that can be used in acoustic local positioning systems with Binary Phase-Shift Keying (BPSK) modulated signals for Time-of-Flight (ToF) estimation. The proposed approach is implemented in th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ed074d1492143a9e5a0fc79126dcdba
https://doi.org/10.1109/ipin.2016.7743611
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3
High Energy OFDM Pulse Design Algorithm for Acoustic ToF Ranging and Localization
Autor: Sérgio I. Lopes, Daniel Albuquerque, J. M. N. Vieira, Teodoro Aguilera, Fernando Alvarez
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
IPIN
This paper proposes an algorithm to design band-limited Orthogonal Frequency Division Multiplexing (OFDM) pulses for accurate time-of-flight ranging in acoustic-based localization systems. The proposed algorithm is capable to generate OFDM pulses wit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a12a13da391ce644ca8e68920601de56
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5
Characterization of the Near-Far problem in a CDMA-based acoustic localization system
Autor: J. M. N. Vieira, Daniel Albuquerque, Sérgio I. Lopes, Teodoro Aguilera, A. Sanchez, Fernando Alvarez
Publikováno v: ICIT
In this work the Near-Far problem is characterized in the context of an acoustic local positioning system (ALPS). First, a simple energy normalization algorithm is presented to identify the Near-Far situation and also to resolve the signal detection
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b29465ff4f1fa3b8dedc861d635fd3f
https://doi.org/10.1109/icit.2015.7125604
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6
RF and IF channelizers for wide-band sensing in cognitive/Software-Defined-Radio receivers
Autor: Jose P. Magalhaes, J. M. N. Vieira, Roberto Gomez-Garcia, Nuno Borges Carvalho
Publikováno v: 2012 42nd European Microwave Conference.
This paper proposes an original architecture for a Software-Defined-Radio receiver based on an Hybrid Filter Bank. The key issue for its proper operation is the channelization of the incoming signal into multiple sub-bands, that is performed at two s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbd1cf660c2c9b923f4a1a16c85c2904
https://doi.org/10.23919/eumc.2012.6459265
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9
[Anti-Leptospira agglutinins in different professional groups in the city of Londrina, Paraná]
Autor: L M, Vasconcelos, E O, Cisalpino, M N, Vieira, M C, Koury
Publikováno v: Revista da Sociedade Brasileira de Medicina Tropical. 25(4)
Serum samples were obtained from 208 individuals in Londrina, Paraná, Brazil. The serum were analysed for leptospiral agglutinins by agglutination microscopic tests and 28.4% were positive. The highest positivity was found for the serum of garbage c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d3609d48f05458c1db3bebfee45beea9
https://pubmed.ncbi.nlm.nih.gov/1340540
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