在本論文中，我們在多重輸入多重輸出 (multiple input multiple output ; MIMO)情形下研究一種基於離散哈特利轉換 (discrete Hartley transform；DHT) 的替代性濾波器組多載波 (FBMC) 系統，而不是基於離散傅立葉轉換 (discrete Fourier transform；DFT) 。為了提高資料偵測性能，在基於DHT的MIMO FBMC系統，我們結合了空頻區塊碼 (SFBC)，因為可以達到空間和頻率分集增益，我們的傳送資料會先經由convolution 編碼器編碼後，每個傳送端則使用適當的 SFBC編碼器。而對於接收端的數據偵測，我們除了採用SFBC解碼器之外，我們還使用了full-tap MMSE的等化方式。電腦模擬結果顯示我們所提出的SFBC DHT-MIMO FBMC系統可以達到比原有的 DFT-MIMO FBMC系統有較好的位元錯誤率，然而前者所使用的聯合資料偵測需要比較高的運算量，以開發DHT系統中的多樣性增益。

In this thesis, we study an alternative filter bank multi-carrier (FBMC) system based on the discrete Hartley transform (DHT), in the context of multiple input multiple output (MIMO), not based on the discrete Fourier transform (DFT). To improve the data detection performance in the DHT-based MIMO FBMC system, we combine it with the space-frequency block code (SFBC), which increases the space and frequency diversity. Our transmission data is first encoded by the convolution encoder, and each transmission end uses the appropriate SFBC encoder. For data detection at the receiver, in addition to the SFBC decoder, we also use the full-tap minimum mean square error (MMSE) equalization method. Computer simulation results show that our proposed SFBC DHT-MIMO FBMC system can achieve a better bit error rate (BER) than the SFBC DFT-MIMO FBMC system; however, the proposed system also requires higher computational complexity for joint data detection at the receiver to exploit the diversity gain.

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