Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Darlene M. Neves"'
Autor:
Darlene M. Neves, Antônio Lúcio Teixeira, Jacklyn D. Reis, Somayeh Ziaie, Mário Lima, Ricardo B. Ferreira, Ali Shahpari
Publikováno v:
Journal of Lightwave Technology. 32:729-735
In this paper, we numerically and experimentally demonstrate a bidirectional Terabit+ ultradense wavelength-division multiplexing (UDWDM) coherent passive optical network with Nyquist shaped 16-ary quadrature amplitude modulation, offering up to 10 G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03095f4e2f1ab712e81e6a798ef3b1c2
https://doi.org/10.1109/jlt.2013.2283017
https://doi.org/10.1109/jlt.2013.2283017
Publikováno v:
Journal of Lightwave Technology. 30:234-241
This paper addresses transmission aspects on very high aggregate wavelength-division multiplexing based passive optical networks (WDM-PON). The ultradense WDM-PON system evaluated in this paper transports high-order modulation formats such as M-ary p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65b92dcb17630e4ad3a7376b0992836e
https://doi.org/10.1109/jlt.2011.2180698
https://doi.org/10.1109/jlt.2011.2180698
Autor:
Darlene M. Neves, Antônio Lúcio Teixeira, Ricardo B. Ferreira, Jacklyn D. Reis, Mário Lima, Ali Shahpari
Publikováno v:
OFC
CIÊNCIAVITAE
Scopus-Elsevier
CIÊNCIAVITAE
Scopus-Elsevier
In this work Nyquist technology application to future optical access networks is discussed. Implementation issues regarding low symbol rates are characterized. The potential benefits of Nyquist in symmetric/bi-directional PON are presented by means o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2f9009fa703dc09e43250f6e582c670
https://doi.org/10.1364/ofc.2014.w3g.3
https://doi.org/10.1364/ofc.2014.w3g.3
Autor:
Jacklyn D. Reis, Mário Lima, Ali Shahpari, Ricardo B. Ferreira, Darlene M. Neves, Antônio Lúcio Teixeira
Publikováno v:
OFC
CIÊNCIAVITAE
Scopus-Elsevier
CIÊNCIAVITAE
Scopus-Elsevier
This work presents a Multi-objective Genetic Algorithm for optimizing upstream and downstream Nyquist bands in coherent PON with self-heterodyne detection. Both power and frequency offset coefficients are found for symmetric Nyquist shaped 10 Gb/s pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe1707013d200aa1026d8c262bdad5f6
https://doi.org/10.1364/ofc.2014.w2a.25
https://doi.org/10.1364/ofc.2014.w2a.25
Autor:
Ricardo B. Ferreira, Darlene M. Neves, Antônio Lúcio Teixeira, Jacklyn D. Reis, Mário Lima, Zoran Vujicic, Ali Shahpari
Publikováno v:
2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching.
We experimentally analyze the required guard band of coherent optical UDWDM networks transporting 16×1.25 Gb/s - QPSK at 3.125 GHz frequency grid to coexist with Video and 10G - NRZ transmissions. Using simple DSP based ONU, guard bands of only 0.8-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73d43957c68223984e0c321b43835c6f
https://doi.org/10.1364/oecc_ps.2013.wp1_4
https://doi.org/10.1364/oecc_ps.2013.wp1_4
Autor:
Mário Lima, Ali Shahpari, Jacklyn D. Reis, Darlene M. Neves, Ricardo B. Ferreira, Antônio Lúcio Teixeira
Publikováno v:
CIÊNCIAVITAE
OFC/NFOEC
Scopus-Elsevier
OFC/NFOEC
Scopus-Elsevier
We experimentally demonstrate a bi-directional Terabit+ UDWDM coherent PON with Nyquist shaped 16QAM modulation, offering up to 10 Gb/s service capabilities per user/wavelength in a total spectrum of 12.8 nm over 40 km of SSMF.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c2239e2711a5931372502b260f38166
https://doi.org/10.1364/ofc.2013.pdp5b.3
https://doi.org/10.1364/ofc.2013.pdp5b.3
Autor:
Fernando P. Guiomar, Darlene M. Neves, Antônio Lúcio Teixeira, Ricardo B. Ferreira, Jacklyn D. Reis, Armando N. Pinto, Ali Shahpari
Publikováno v:
OFC/NFOEC
We analyze the transmission limitations of coherent optical access networks transporting over Terabit data rates with high-order QAM modulation. Additionally, we experimentally demonstrate the coexistence of 16×1.25 Gb/s-QPSK with 10 Gb/s-NRZ consid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c1dd2f088d2ae83bf591010d49902ac
https://doi.org/10.1364/ofc.2013.om2a.5
https://doi.org/10.1364/ofc.2013.om2a.5
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
In this article, we propose and assess an iterative pilot-data-aided channel estimation scheme for space frequency block coding relay-assisted OFDM-based systems. The relay node (RN) employs the equalise-and-forward protocol, and both the base statio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::065b00f081404d5173f4e1cac11b01d5
https://doi.org/10.1186/1687-6180-2012-74
https://doi.org/10.1186/1687-6180-2012-74
Publikováno v:
Optics express. 19(27)
In this paper we address high aggregate data rate coherent UDWDM-PONs (ultra-dense wavelength-division multiplexing passive optical networks) related physical impairments. Firstly, analog to digital converter resolution and laser linewidth are optimi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b18e9cbd289a787961d0b7bcd8e91cf9
https://pubmed.ncbi.nlm.nih.gov/22274240
https://pubmed.ncbi.nlm.nih.gov/22274240
Publikováno v:
GLOBECOM
In this work the maximum density is numerically investigated giving the compromise of physical impairments and spectral efficiency on coherent ultra-dense wavelength division multiplexing passive optical networks (UDWDM-PON). The required guard band
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d4e4fa546d91b6e638c7915eb7c7ea0
https://doi.org/10.1109/glocom.2011.6133558
https://doi.org/10.1109/glocom.2011.6133558