N. J. Gomes

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A low-cost option for transporting global system for mobile communication, Universal Mobile Telecommunication System and wideband local area network (WLAN) signals using multimode fiber (MMF) with 850-nm vertical-cavity surface-emitting lasers (VCSELs) is investigated through range predictions from a link budget analysis. These predictions are(More)
We transmit multilevel quadrature amplitude modulation (QAM) data-IEEE 802.16 schemes-at 20 MSps and an orthogonal frequency-division multiplexing (OFDM) 802.11 g signal (54 Mbps) with a 25 GHz millimeter-wave over fiber system, which employs a dual wavelength source, over 20 km of single mode fiber. Downlink data transmission is successfully demonstrated(More)
Quadrature phase-shift keying, 16 quadrature amplitude modulation (QAM), and 64-QAM data transmission - Worldwide Interoperability for Microwave Access modulation schemes - at 6 and 20 MS/s is demonstrated for a link that emulates a cost-effective 1.55 mum vertical-cavity surface-emitting laser based radio over fiber millimeter-wave indoor picocellular(More)
but the transfer function is not totally flat, like in the simulations. The reason of this difference between simulations and measurements is caused by the imperfections of the OSSB filter. After the experiments of the OSSB modulation, the effect of the mode filter is measured as well. The SMF patchcord theoretically filters off every mode groups except(More)
An investigation into high spectral efficiency modulation schemes used in optical communication systems including the effects of fibre chromatic and polarisation mode dispersion and nonlinearity is described. The modulation schemes include optical duobinary AM-PSK and phase shaped binary transmission. The paper reports on transmission distances achievable(More)
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