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http://hdl.handle.net/10071/12324
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Title: Semidefinite relaxations for MIMO transmissions with high-order QAM constellations
Authors: Souto, N.
Ribeiro, M.
Sebastião, P.
Keywords: MIMO detection
QAM constellations
Semidefinite relaxation
Issue Date: 2016
Publisher: IEEE
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.
Peer reviewed: yes
URI: http://hdl.handle.net/10071/12324
DOI: 10.1109/LSP.2016.2576640
ISSN: 1070-9908
Ciência-IUL: https://ciencia.iscte-iul.pt/id/ci-pub-29339
Accession number: WOS:000379694800003
Appears in Collections:IT-RI - Artigo em revista internacional com arbitragem científica

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