Improving diversity order with coordinate interleaving for distributed space-time block codes

In this paper, improving diversity order at the destination is aimed when coordinate interleaved symbols are transmitted using distributed Alamouti´s space-time block code. When users perfectly cooperate, diversity order can be doubled with coordinate interleaving. Error performance of the proposed system is evaluated by computer simulations for QPSK modulation and its superiority compared to the equivalent system without coordinate interleaving is demonstrated.