A design of enhanced space time block codes in MIMO wireless systems

In order to achieve full diversity in the MIMO wireless communication system, most of the exist OSTBC is based on the ML decoding at the receiver, and this is computationally expensive. However, the symbol rate of the OSTBC is low due to the limitation of the code structure. This paper proposes a design of high symbol rate STBC that achieves full diversity with the linear receiver which named EOAC. It is constructed by interchanging the Alamouti codes into each element of the Overlapped-Alamouti Codes (OAC). Simulation results suggest that the proposed EOAC can give a better symbol error rate (SER) performance and have higher symbol rate than the OAC.