多傳多收天線系統(MIMO)作為4G、5G的核心技術近幾年蓬勃發，比單傳單收(SISO)更能增強通訊系統容量，系統的效能有著明顯的提升，而且又能提高頻譜效率，然而社會對於通訊系統的需求不僅僅滿足於現狀、而是追求更高效率、更高穩定度和更高正確性的通訊系統、本篇論文將討論時空區段碼結合多階層編碼在無線通訊系統中的效能及更改內部編碼來跟QPSK做比較。;Multi-input Multi-output system(MIMO) has flourished in recent years as the core technology of 4G and 5G ,It can enhance the communication system capacity more than single-input single-output system (SISO). The system performance has been significantly improved, and the spectrum efficiency can be improved. However, the society′s demand for communication systems is not only satisfied with the status quo, but also pursues higher efficiency and more Communication system with high stability and higher accuracy. This paper will discuss the performance of space-time block codes combined with multi-level coding in wireless communication systems and change the internal coding to compare with the performance of QPSK.
