Compressive Sensing Assisted Generalized Quadrature Spatial Modulation for Massive MIMO Systems

Abstract

A novel Multiple-Input and Multiple-Output (MIMO) transmission scheme termed as Generalized Quadrature Spatial Modulation (G-QSM) is proposed. It amalgamates the concept of Quadrature Spatial Modulation (QSM) and spatial multiplexing for the sake of achieving a high throughput, despite relying on low number of Radio Frequency (RF) chains. In the proposed G-QSM scheme, the conventional constellation points of the spatial multiplexing structure are replaced by the QSM symbols, hence the information bits are conveyed both by the antenna indices as well as by the classic Amplitude/Phase Modulated (APM) constellation points. The upper bounds of the Average Bit Error Probability (ABEP) of the proposed G-QSM system in high throughput massive MIMO configurations are derived. Furthermore, an Efficient Multipath Orthogonal Matching Pursuit (EM-OMP) based Compressive Sensing (CS) detector is developed for our proposed G-QSM system. Both our analytical and simulation results demonstrated that the proposed scheme is capable of providing considerable performance gains over the existing schemes in massive MIMO configurations.

Differentially-Encoded Rectangular Spatial Modulation Approaches the Performance of Its Coherent Counterpart

“…where χ is the set of SM symbol, (13). Due to the non-square structure, the performance of (19) can be further improved by introducing the forgetting factor α aŝ…”

The Achievable Rate Analysis of Generalized Quadrature Spatial Modulation and a Pair of Low-Complexity Detectors

“…In the QSM scheme, the indices of the real and imaginary parts are different, resulting in higher transmission rates than SM. Given the rate advantages of QSM and GSM, the authors of [24] combine these two schemes for increasing the rate. More specifically, [24] divides N t antennas into L groups and employs QSM in each group.…”

Deep Learning-Aided OFDM-Based Generalized Optical Quadrature Spatial Modulation

“…In [8], quadrature OSM (QOSM) has been studied where spatial mapping is performed in both the in-phase and quadrature components, resulting in a doubled number of spatial bits. As a joint scheme of generalized spatial modulation (GSM) and quadrature spatial modulation (QSM), generalized quadrature spatial modulation (GQSM) has been introduced in radio frequency (RF)-based vehicular networks and massive MIMO systems [9], [10]. Moreover, generalized optical QSM (GOQSM) has also been applied in visible lightbased OWC systems [11].…”