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A low-complexity transmit antenna selection (TAS) scheme is proposed for spatial modulation systems to provide a better trade-off between computational complexity and system performance. The proposed scheme can achieve a performance similar to the optimal TAS scheme in the low SNR region, but with much lower complexity compared with existing schemes in the literature.
In this study, the authors investigate the benefits of phase-rotation-assisted precoding (PRP) technique in spatial modulation (SM) systems, which are based on maximum free distance dmin. First, a closed-form solution of the maximum-dmin PRP matrix is derived for the scenario of having two transmit antennas (Nt = 2). Moreover, two numerical methods are proposed for dealing with the case of Nt >...
In this paper, an order reduction maximum likelihood (OR-ML) algorithm for spatial modulation systems is proposed to reduce the receiver complexity. The proposed algorithm relies on a smaller order neighbourhood constellation which is relative to the conventional mapping constellation, where the active transmitting antenna indices or the possible quadrant transmission symbols locate in is obtained...
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