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  • 學位論文

運用接收端角度迴授修正相位之多輸入/多輸入正交分頻載波多工系統傳輸

Rotation Based MIMO OFDM Transmission Using Angle Feedback

指導教授 : 張進福

摘要


多輸入/多輸出正交分頻載波多工系統擁有訊號分集(diversity)、有效抵抗ISI等優點,因此被現今各大無線通訊標準所採用。本論文探討將第二根天線傳送訊號相位修正(星座圖上),接收端是否可應用此已知資訊來降低系統傳輸位元錯誤率。本論文將針對MMSE等化器及Matched filter兩種接收器提出傳送端預先相位最佳修正角度。最後並將提出傳送及接收方式運用於高速移動環境下,探討在有通道估測誤差情況下,相位修正方法是否仍能改善傳輸位元錯誤率。

並列摘要


There are many advantages for MIMO OFDM system, like spatial diversity, frequency diversity, ISI resistant…and so on. MIMO OFDM has become a key feature for Many communication standards(WiMAX LTE WiFi). From this paper, we want to investigate that while we rotate the phase of signal, whether or not the design will lead to batter BER. We try to find optimal phase shift for two receiver, MMSE equalizer and Matched filter. At last, we apply our designs in high speed environment.

並列關鍵字

MIMO OFDM Angle Feedback Phase Correction

參考文獻


[1] 何宇軒, “正交分頻多工系統再超高速移動環境下的低複雜度
[2] Introduction to MIMO systems, ROHDE & SCHWARZ GmbH &
advanced ambulance
[6] Won Gi Jeon, Kyung Hi Chang, and Yong Soo Cho,” An
Multipath Channels ”, IEEE Transactions on

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