Efficient Differential Quasi-Orthogonal Space-Time Block Code System

In this paper, we present an efficient differential quasi-orthogonal space-time block code (ED-QOSTBC) system. In particular, it is shown that our proposed system performs symbol-wise complex symbol decoding with the maximum likelihood (ML) receiver. From the performance evaluations, it is demonstrated that the ED-QOSTBC system has the same performance compared to conventional D-QOSTBC transmission in terms of bit-error-rate (BER), and it reduces decoding complexity proportional to the cardinality of the constellation set.