設計與分析空間排列調變傳輸機於多輸入多輸出系統

We have proposed a new multiple-input multiple-output (MIMO) transmission technology called spatial permutation modulation (SPM) and studied this topic for 2 years under the support of two successive MOST projects. SPM maps the information bits to the QAM symbols and the permutation array. The QAM symbols are transmitted by different transmit antennas at different time instants, selected by the associated permutation array. In this project, we have fruitful results that include three IEEE journal papers and one IEEE conference paper. At this moment, another journal is under submission and review. This year, we complete the design of the SPM transmitter and the associated theoretical performance analysis. In particular, the design space of SPM is multidimensional including modulation of QAM symbols, the allocation of QAM symbols in the time-space grid, and the mapping between the permutation array and the active transmit antennas. Such complicated design space requires a thorough theoretical analysis for the SPM transmission optimization. In particular, the pair-wise error probability (PEP) is derived by using the Chernoff bound, moment generating function, and certain numerical methods, e.g., saddle-point approximation. We will derive the closed-form expression to shed light on the relations among transmission parameters. Moreover, we investigate the combination of SPM with other transmission technologies, that is, the space-time block coded spatial modulation (STBC-SM) and the quadrature spatial modulation (QSM). The integrated techniques called space-time block coded spatial permutation modulation (STBC-SPM) and the quadrature spatial permutation modulation (QSPM) show superior error rate performance to their original versions. This result demonstrates the high compatibility of SPM, which can be easily integrated with other advanced SM techniques for higher transmission efficiency.