Inspec keywords: MIMO communication; maximum likelihood detection; antenna arrays; computational complexity; approximation theory; modulation; wireless channels; compressed sensing

Other keywords: imaginary parts; GQSM; lesser complexity; antenna index; ordering-based structured orthogonal matching pursuit; compressive sensing; near-maximum likelihood low-complexity detector; higher throughput; multiinput multioutput systems; maximum likelihood detector; M-ary complex symbols; trade-off between complexity; SM techniques; spatial dimension; real parts; bits-per-channel use; multiple antennas; generalised QSM transmission; transmission schemes; generalised quadrature spatial modulation

Subjects: Antenna arrays; Radio links and equipment; Modulation and coding methods; Interpolation and function approximation (numerical analysis); Other topics in statistics; Signal detection