Semidefinite programming relaxation approach for multiuser detection of QAM signals


A semidefinite programming (SDP) relaxation approach is proposed to solve multiuser detection problems in systems with M-ary quadrature amplitude modulation (M-QAM). In the proposed approach, the optimal M-ary maximum likelihood (ML) detection is carried out by converting the associated M-ary integer programming problem into a binary integer programming… (More)
DOI: 10.1109/TWC.2007.060418

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