IEEE 802.15.3c HSI MIMO多載波系統之效能評估

Abstract

在現代化的時代裡,無線網路的品質變得越來越重要。近年來IEEE 802.15.3c為短距離無線傳輸的熱門標準。在這個標準底下資料速率可以達到5Gbps。而如果想進一步提昇其效能其中一個方法就是使用多輸入多輸出天線(MIMO)來達到目的。但在MIMO系統下，如果天線數太龐大，解調將會變得非常困難。為了解決這問題許多學者提出各種有效的解調演算方法。但具有接近最佳效能、低計算複雜度、且適合時做的演算法仍然未出現。為此本論文提出一新的MIMO偵測演算法，此法及具有上述的特性。這個演算法主要是建立在列舉式(list-based),K-best檢測器(K-best detector),以及連續干擾消除(successive- interference-cancellation SIC)檢測器的一個智慧組合，而模擬結果也證實本演算法可以達到預期的結果。

IEEE 802.15.3c is a short distance transmission standard designed for the transmission of high-throughput video signals. Under this standard, the data rate can be reached up to 5Gbps. It is known that the channel capacity can be effectively enhance with the multiple-input-multiple-output (MIMO) technology. However, in MIMO systems, if the MIMO size is large, the complexity of optimum signal detection or demapping will be high. This is particularly true for the high-throughput system such as IEEE802.15.3c. Many suboptimum approaches have been proposed; nevertheless, an algorithm with near optimum performance, low complexity, and good implementation architecture is still not available. In this thesis, we propose a new MIMO detection algorithm having the aforementioned advantages. The idea is combining the listed-based, the K-best, and the successive-interference-cancellation (SIC) algorithms in an intelligent way. Simulations with IEEE802.15.3c systems show that the proposed algorithm works as expected.