Performance Analysis of RIS-Aided Double Spatial Scattering Modulation for mmWave MIMO Systems

Abstract

In this paper, we propose a novel transmissive reconfigurable intelligent surface (TRIS) transmitter-enabled spatial modulation (SM) multiple-input multiple-output (MIMO) system. In the transmission phase, a column-wise activation strategy is implemented for the TRIS panel, where the specific column elements are activated per time slot. Concurrently, the receiver employs the maximum likelihood detection technique. Based on this, for the transmit signals, we derive the closedform expressions for the upper bounds of the average bit error probability (ABEP) of the proposed scheme from different perspectives, employing both vector-based and element-based approaches. Furthermore, we provide the asymptotic closed-form expressions for the ABEP of the TRIS-SM scheme, as well as the diversity gain. To improve the performance of the proposed TRIS-SM system, we optimize ABEP with a fixed data rate. Additionally, we provide lower bounds to simplify the computational complexity of improved TRIS-SM scheme. The Monte Carlo simulation method is used to validate the theoretical derivations exhaustively. The results demonstrate that the proposed TRIS-SM scheme can achieve better ABEP performance compared to the conventional SM scheme. Furthermore, the improved TRIS-SM scheme outperforms the TRIS-SM scheme in terms of reliability.

Performance Analysis of RIS-Aided Space Shift Keying With Channel Estimation Errors

“…Derivative operations with respect to x Pout Outage probability T Throughput communication paradigms based on RIS and IM [19]- [31].…”

“…In [30], the authors presented the RIS-double SSM (DSSM) scheme, in which the RIS is deployed in the middle of the channel, and the transmitter-to-RIS and RIS-to-receiver sub-channels are communicated with NLoS paths. Next, [31] investigated the system performance of RIS-DSSM scheme in terms of the ABEP and ergodic capacity.…”