Novel Performance Analysis of Multi-Access MIMO Relay Cooperative RM-DCSK over Nakagami-m Fading Subject to AWGGN

In this paper, a novel performance analysis of the multi-access multiple-input multiple-output relay reference-modulated differential chaos shift keying cooperative diversity (RM-DCSK-CD) is presented. New closed-form expressions for the average bit error rates are derived for multiple relaying protocols. The carried analysis is based on a novel approximation of the bit error rates of RM-DCSK systems that directly applies for high- efficiency DCSK (HE-DCSK). The analysis assumes Additive White Generalized Gaussian Noise (AWGGN) model, which includes many other noise models as special cases, and Nakagami-m fading (and hence the Rayleigh fading). Numerical results prove the accuracy of our derived expressions.