空時碼與接收天線選擇之研究

Study of Space Time Coding with Receive Antenna Selection

李昌穆(Chang-Mu Li)

指導教授 ： 王瑞騰

國立暨南國際大學/科技學院/通訊工程研究所/碩士(2009年)

摘要

就多輸入多輸出(MIMO)系統而言，有空時方塊碼(STBC)和空時籬柵碼(STTC)這兩種空時編碼技術。根據文獻可得知，接收天線選擇(RAS)能夠提供足夠的系統性能並且也能夠降低計算複雜度。在本篇論文中，我們研究STBC、STTC以及結合前面兩者的STTC-STBC系統。為了了解STC系統加入RAS的影響，我們進一步在STBC、STTC及STTC-STBC的系統中加入RAS。經由模擬結果顯示，加入RAS的系統之位元錯誤率(BER)會接近於未加入RAS的系統，而STTC-STBC系統之性能為本論文中所有系統之最；再者，我們計算出本論文中所有系統之複雜度。然而，結果顯示出加入RAS的系統比起未加入RAS的系統有較低的計算複雜度。

關鍵字

多輸入多輸出系統 ； 空時方塊碼 ； 空時籬柵碼 ； 複雜度

並列摘要

There can be two space-time codes for MIMO systems: space-time block code (STBC) and space-time trellis code (STTC). And it was reported that receive antenna selection (RAS) can provide the competent performance and can reduce the computational complexity. In this thesis, we study STBC, STTC, and their combination: STTC-STBC. To evaluate the effects of RAS on space-time coding, we further impose RAS on STBC, STTC, and STTC-STBC. Simulation results show that the bit error rate (BER) for the schemes with RAS is close to that for the schemes without RAS, and STTC-STBC has the lowest BER among all studied schemes. Also, we evaluate the computational complexity for the studied schemes and the results show the schemes with RAS can have lower computational complexity than the schemes without RAS.

並列關鍵字

MIMO ； STBC ； STTC ； Complexity

參考文獻

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