BER Closed Form for Generalized MC-DS-CDMA using New Q-Function Approximation

This paper introduces a closed form expression for the bit error rate (BER) of generalized multicarrier code division multiple access (MC-CDMA) system based on a new modified exponential approximation. The closed form of the BER will be derived using the proposed new approximation as well as the exponential approximation proposed previously in the work of Chiani et al. (2003). The results using both approximations are compared to the results that arc previously published. The BER can be now easily computed using simple substitution without either the need to use computer simulation or to perform a numerical integration.