報告嘉賓: 劉亞鋒
報告時間：2018年12月27日周四下午4:00
報告地點：西教五416（理學院）
報告題目: A New and Enhanced Semidefinite Relaxation for a Class of Nonconvex Complex Quadratic Problems with Applications in Wireless Communications
報告摘要: In this talk, we shall consider a special class of nonconvex Complex Quadratic Problems (CQP), which finds many important and interesting applications in wireless communications. In this talk, we shall first develop a new and Enhanced Complex SemiDefinite Program, called ECSDP, for the considered CQP and then apply the ECSDP to MIMO detection, a fundamental problem in modern wireless communications. As our main result, we show the tightness of the ECSDP for MIMO detection under an easily checkable condition. This result answers an open question posed by So in 2010. Based on the ECSDP, we can also develop a branch-and-bound algorithm for globally solving the MIMO detection problem (even though the above condition does not hold true).
報告嘉賓簡介：劉亞鋒，中國科學院數(shù)學與系統(tǒng)科學研究院副研究員。2007年畢業(yè)于西安電子科技大學理學院數(shù)學系，2012年在中國科學院數(shù)學與系統(tǒng)科學研究院獲得博士學位（導師：戴彧虹研究員）；博士期間，受中國科學院數(shù)學與系統(tǒng)科學研究院資助訪問明尼蘇達大學羅智泉教授一年。畢業(yè)后，一直在中國科學院數(shù)學與系統(tǒng)科學研究院計算數(shù)學所工作。主要研究興趣是最優(yōu)化理論與算法及其在信號處理和無線通信等領域中的應用，已在Mathematical Programming, SIAM Journal on Optimization, Mathematics of Operations Research等優(yōu)化頂級期刊以及 IEEE Transactions on Signal Processing, IEEE Journal on Selected Areas in Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Information Theory等IEEE交叉領域頂級期刊發(fā)表論文三十余篇。曾獲2011年國際通信大會“最佳論文獎”（由IEEE通信學會頒發(fā)），2015年WiOpt (International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks)“最佳學生論文獎”，2018年數(shù)學與系統(tǒng)科學研究院“陳景潤未來之星”，2018年中國運籌學會“青年科技獎”等。目前擔任《Journal of Global Optimization》期刊的客座編委，IEEE高級會員（Senior Member）、亞太信號與信息處理學會（Asia-Pacific Signal and Information Processing Association）無線通信和網(wǎng)絡（Wireless Communications and Networking）方向的技術委員會成員（Technical Committee）。
