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Spatially Coupled Turbo Codes

In this paper, we introduce the concept of spatially coupled turbo codes (SC-TCs), as the turbo codes counterpart of spatially coupled low-density parity-check codes. We describe spatial coupling for both Berrou et al. and Benedetto et al. parallel and serially concatenated codes. For the binary erasure channel, we derive the exact density evolution (DE) equations of SC-TCs by using the method pro

Bioactive Pt(II) and Au(I) complexes based on 1,1’-bis(diphenylphosphino)metallocene derivatives

New 1,2,1’ substituted bis(diphenylphoshino)ruthenocenes are described and used as ligands in cis-Pt(II) complexes. The new substances were also employed in Au(I) complexes, together with previously described ferrocene-based ligands. Examples of crystal structures are presented for the ligands, as well as for the platinum and gold complexes. The preliminary biological activity covering antitumour,

Dense high aspect ratio pillar arrays for carbon MEMS devices

This work presents the fabrication and characterization of 3 dimensional electrodes from pyrolysed carbon with spacing and diameter approaching the resolution limit of standard UV photolithography. Our carbon pillar arrays have a diameter of 1.4 µm, spacing of 5 µm and aspect ratio of about 8. We show their characterization by a variety of techniques providing a complete summary of their electro-m

Sum rules and physical limitations for passive metamaterials

Bandwidth is an important parameter in many metamaterial applications. It has been shown that Herglotz functions and sum rules offer a powerful methodology to analyze the trade-off between bandwidth and design parameters. Here, this approach is described for the temporal dispersion of constitutive relations and high-impedance surfaces.

Multiple scattering by a collection of randomly located obstacles Part I: Theory - coherent fields

Scattering of electromagnetic waves by discrete, randomly distributed objects is addressed. In general, the non-intersecting scattering objects can be of arbitrary form, material and shape. The main aim of this paper is to calculate the coherent reflection and transmission characteristics of a finite or semi-infinite slab containing discrete, randomly distributed scatterers. Typical applications o