Spatial Modulation Scheme With Low-Complexity Detection Algorithms

In this letter, two sphere-decoding (SD) algorithms for spatial modulation (SM) are proposed to reduce the computational complexity of maximum-likelihood (ML) optimum detector. Through theoretical analysis and simulation results, it is shown that the proposed algorithms offer a near-optimum performance. Under the same spectral efficiency, both the SDs offer a significant reduction in computational complexity with respect to not only the ML...