87,021 research outputs found
Computing Three-dimensional Constrained Delaunay Refinement Using the GPU
We propose the first GPU algorithm for the 3D triangulation refinement
problem. For an input of a piecewise linear complex and a
constant , it produces, by adding Steiner points, a constrained Delaunay
triangulation conforming to and containing tetrahedra mostly of
radius-edge ratios smaller than . Our implementation of the algorithm shows
that it can be an order of magnitude faster than the best CPU algorithm while
using a similar amount of Steiner points to produce triangulations of
comparable quality
Iterative Multiuser Minimum Symbol Error Rate Beamforming Aided QAM Receiver
A novel iterative soft interference cancellation (SIC) aided beamforming receiver is developed for high-throughput quadrature amplitude modulation systems. The proposed SIC based minimum symbol error rate (MSER) multiuser detection scheme guarantees the direct and explicit minimization of the symbol error rate at the output of the detector. Adopting the extrinsic information transfer (EXIT) chart technique, we compare the EXIT characteristics of an iterative MSER multiuser detector (MUD) with those of the conventional minimum mean-squared error (MMSE) detector. As expected, the proposed SIC-MSER MUD outperforms the SIC-MMSE MUD. Index TermsâBeamforming, iterative multiuser detection, minimum symbol error rate, quadrature amplitude modulation
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