The BER Performance Analysis of a Cooperative Diversity Scheme

A novel cooperative diversity scheme based on distributed space-time block code and multi-carrier code division multiple access (DSTBC-MC-CDMA) is proposed which works well in multiple single-antenna users in frequency selective fading channels. And an analytical model to describe the symbol decoding error between interusers is established, based on which a theoretical bit error rate (BER) performance of the scheme is derived to analyze the influence of symbol decode error between interusers on the BER performance of the scheme. Then the simulation is complimented to verify the analytical result above, which also shows that the BER performance of DSTBC-MC-CDMA outgoes MC-CDMA with distinct gains. Furthermore, the simulations coincide with the theoretical results well