Cooperative Amplify and Forward SSK Sparse Code Multiple Access System: Performance Analysis

In this manuscript, a novel approach is proposed to enhance the performance of sparse code multiple access (SCMA) systems through facilitating the advantages of co-operative multiple-input multiple-output (MIMO) systems. In particular, MIMO-Space shift keying (SSK) system is adopted because of its inherent advantages. As well, amplify and forward (AF) cooperative relays are assumed. The performance of the presented system is studied over Rayleigh fading channels in terms of average bit error ratio (ABER) and compared to the performance of SCMA-SSK-MIMO systems. Reported results reveal the considerable enhancements attained from adding the cooperative technique. The superiority of the presented system over orthogonal multiple access (OMA) in terms of ABER is also depicted in the results.