Novel construction methods of quaternion orthogonal designs based on complex orthogonal designs

摘要: Quaternion orthogonal designs (QODs) are considered the foundation of space time polarization block codes (OSTPBCs). OSTPBCs benefit from polarizations and coding simultaneously to enhance capacity wireless communication systems. To exploit these advantages OSTPBCs, this paper explores two generalized construction techniques QODs, where first one is based on symmetric-paired while second technique maps complex (CODs) QODs directly. With schemes, for any number transmit antennas can be constructed. Moreover, a low-complexity maximum-likelihood (ML) decoder proposed has been presented that provides optimal decoupled decoding with phenomenal complexity reduction. Simulation results show diversity order QOD higher than design given same.