Detection of Spatially Modulated Signals via RLS: Theoretical Bounds and Applications

This paper characterizes the performance of massive multiuser spatial modulation MIMO systems, when a regularized form least-squares method is used for detection. For generic distortion function and right unitarily invariant channel matrices, per-antenna transmit rate asymptotic achieved by this class detectors are derived. Invoking an characterization, we address two particular applications. Namely, derive error computationally-intractable optimal Bayesian detector, propose efficient approach to tune LASSO-type detectors. We further validate our derivations through various numerical experiments.