Nikolaos Papandreou

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Recommended by Kostas Berberidis Multicarrier modulation is a powerful transmission technique that provides improved performance in various communication fields. A fundamental topic of multicarrier communication systems is the bit and power loading, which is addressed in this article as a constrained multivariable nonlinear optimization problem. In(More)
— Phase-change memory (PCM) has emerged as one among the most promising technologies for next-generation non-volatile solid-state memory. Multilevel storage, namely storage of non-binary information in a memory cell, is a key factor for reducing the total cost-per-bit and thus increasing the competitiveness of PCM technology in the nonvolatile memory(More)
— This paper addresses the problem of efficient resource allocation for multiuser orthogonal frequency division multiplexing over frequency selective channels. For wideband applications, such as power line communications and wireless networks, the development of low-complexity and fast execution time algorithms is important due to the time-varying behavior(More)
NAND Flash memory is not only the ubiquitous storage medium in consumer applications, but has also started to appear in enterprise storage systems as well. MLC and TLC Flash technology made it possible to store multiple bits in the same silicon area as SLC, thus reducing the cost per amount of data stored. However, at current sub-20nm technology nodes, MLC(More)
SPROUTS (Structural Prediction for pRotein fOlding UTility System) is a new database that provides access to various structural data sets and integrated functionalities not yet available to the community. The originality of the SPROUTS database is the ability to gain access to a variety of structural analyses at one place and with a strong interaction(More)
—Far-end crosstalk identification results to improved frequency spectrum utilization in asymmetric digital subscriber line (ADSL) systems. The accurate determination of the crosstalk coupling function is a demanding task that is affected by various system impairments. In this paper, we present a new real-time method that exploits the exchange of signaling(More)