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|Title:||Semidefinite relaxations for MIMO transmissions with high-order QAM constellations|
|Abstract:||In this letter, simple semidefinite relaxations are proposed for the detection of high-order quadrature amplitude modulations in multiple-input–multiple-output systems. The detector is based on the addition of several convex and concave quadratic inequality constraints into the maximum-likelihood detector before relaxing the problem into a convex one. Combined with a randomized sampling procedure, it is shown that the performance and worst-case computational complexity of the proposed approach makes it very competitive against existing detectors in large problem sizes.|
|Appears in Collections:||IT-RI - Artigo em revista internacional com arbitragem científica|
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