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We propose an approach for the estimation of sparse filters from a convolutive mixture of sources, exploiting the time-domain sparsity of the mixing filters and the sparsity of the sources in the time-frequency (TF) domain. The proposed approach is based o ...
We present the experimental demonstration of broadband four-wave mixing in a 2.5 cm-long segment of AsSe Chalcogenide microstructured fiber. The parametric mixing was driven by a continuous-wave pump compatible with data signal wavelength conversion. Four- ...
Dramatic growth of urban populations in the developing countries is being a challenging issue in the upcoming decades. Tabriz is one of those megacities in the northwest of Iran with a rapid rate of development and modernization. As a consequence an urban- ...
We present characterization of a two-pump parametric device for analog linear multicasting. Linearity of parametric multicasting is assessed from highly linearized input seed by two-tone intermodulation measurements. Experimental results confirm distortion ...
Wave and tide are important forcing factors that typically co-exist in coastal environments. A numerical study was conducted to investigate individual and combined effects of these forces on flow and mixing processes in a near-shore subterranean estuary. A ...
We propose a framework for blind multiple filter estimation from convolutive mixtures, exploiting the time-domain sparsity of the mixing filters and the disjointness of the sources in the time-frequency domain. The proposed framework includes two steps: (a ...
Several regional augmentation GNSS systems (like SBAS) are already fully operational and other are under development with new frequencies and signals on the way. Therefore, it becomes imperative to guarantee for all GNSS users the compatibility, interopera ...
Driven by the commercial success of recombinant biopharmaceuticals, there is an increasing demand for novel, cost-effective mammalian cell culture bioreactor systems for the production of biologicals requiring mammalian protein processing. Recently, orbita ...
We report the experimental demonstration of all-optical
wavelength multicasting of OC-768 (40 Gbps) channel using
a single-pass, pump modulated parametric amplifier. The performances
of 1-to-20 and 1-to-40 multicasting with excellent signal fidelity
we ...
Institute of Electrical and Electronics Engineers2009
Efficient mixing in bioreactors is essential in order to avoid concentration gradients which can be harmful for mammalian cells. To study mixing and its scalability in orbitally shaken cylindrical bioreactors, we measured mixing times in containers with no ...