報告題目：基于時間反轉的單載波頻域均衡水下傳輸技術。
（Time reversal based frequency-domain equalization for underwater acoustic single-carrier transmissions.）
報告時間：2018年5月16日上午9:30
報告地點：航海主樓201
聯系人：何成兵
報告人簡介：Aijun Song教授任教于美國阿拉巴馬大學電子與計算機工程學院，研究涉及廣泛，包括：裝設儀器，實驗測試，現場實驗，理論探索，算法設計，模型開發，硬件成型。主要研究現代數字通信，傳感和信號處理技術，并研究其在極端環境下的應用。Aijun Song教授擁有豐富的快速時變無線信道的數字通信和水聲通信的科研經歷，并且在水聲無線通信領域做出了重要貢獻。
報告內容簡介：Prefixes, in forms of cyclic-prefixes or zero-padding, have often been viewed as indispensable in underwater acoustic single-carrier transmissions to avoid inter-block interference (IBI) and to formulate circular convolution. However, the prefix introduces overhead and reduces spectral efficiency. This is especially true in fast time-varying channel conditions. Here we propose a prefix-free scheme to facilitate frequency domain equalization (FDE) in an underwater acoustic communication system, based on the time reversal processing.
