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1. 发明申请

WO2008157646A2 MIMO TRANSMIT BEAMFORMING UNDER UNIFORM ELEMENTAL PEAK POWER CONSTANT 审中-公开
标题翻译：基于均匀单元峰值功率的MIMO发射波束
公开(公告)号：WO2008157646A2
公开(公告)日：2008-12-24
申请号：PCT/US2008/067412
申请日：2008-06-18
申请人： UNIVERSITY OF FLORIDA RESEARCH FOUNDATION , INC. , LI, Jian , ZHENG, Xiayu , XIE, Yao
发明人： LI, Jian , ZHENG, Xiayu , XIE, Yao
IPC分类号： H04B7/04
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0634 , H04B7/0639 , H04B7/0663
摘要： Embodiments of the invention pertain to a MIMO transmit beamforming method that is under the uniform elemental peak power constraint. Embodiments of the MIMO transmit beamforming method can be implemented without requiring unbalanced transmit power allocations among the various transmit antennas. Traditionally, MIMO transmit beamformer design under the uniform elemental power constraint is a non-convex optimization problem. Embodiments of the invention can relax this problem to a convex optimization problem via Semi-Definite Relaxation (SDR). For the multi-input single-output (MISO) case, the globally optimal solution to the relaxed problem has a closed-form and is also optimal to the original problem. With minor modifications, the closed-form MISO solution can be extended to that for the MIMO case, and a suboptimal closed-form solution to the MIMO transmit beamformer design can be obtained.
摘要翻译：本发明的实施例涉及在均匀元素峰值功率约束下的MIMO发射波束成形方法。可以实现MIMO发射波束形成方法的实施例，而不需要各种发射天线之间的不平衡发射功率分配。传统上，均匀元素功率约束下的MIMO发射波束形成器设计是一个非凸优化问题。本发明的实施例可以通过半定位松弛（SDR）将该问题放松到凸优化问题。对于多输入单输出（MISO）情况，放宽问题的全局最优解是闭包的，也是原始问题的最优解。通过轻微修改，封闭形式的MISO解决方案可以扩展到MIMO情况的解决方案，并且可以获得针对MIMO发射波束形成器设计的次优封闭形式的解决方案。

2. 发明申请

WO2007115200A2 METHOD AND SYSTEM FOR ADAPTIVE AND ROBUST DETECTION 审中-公开
标题翻译：用于自适应和鲁棒检测的方法和系统
公开(公告)号：WO2007115200A2
公开(公告)日：2007-10-11
申请号：PCT/US2007/065680
申请日：2007-03-30
申请人： UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. , XIE, Yao , GUO, Bin , LI, Jian , KU, Geng , WANG, Lihong
发明人： XIE, Yao , GUO, Bin , LI, Jian , KU, Geng , WANG, Lihong
IPC分类号： A61B5/00 , G01N21/17
CPC分类号： A61B5/0095 , A61B5/0091 , A61B5/05 , A61B5/4312 , G01N21/1702
摘要： A method of and system of adaptive and robust detection for use in thermoacoustic tomography is provided. The method includes estimating (410) a bipolar acoustic pulse generated by a focal point from multiple thermoacoustic signals using Robust Capon Beamforming, searching (430) for two peaks of the bipolar acoustic pulse within an interval around a calculated arrival time, wherein the interval is determined from an estimated variance of arrival time differences; and calculating (450) a response intensity at the focal point by calculating a peak-to-peak difference of the two peaks.
摘要翻译：提供了一种用于热声层析成像的自适应和鲁棒检测方法和系统。该方法包括使用鲁棒卡波束形成来估计（410）由多个热声信号由焦点产生的双极性声脉冲，在计算的到达时间周围的间隔内搜索（430）双极性声脉冲的两个峰值，其中间隔是根据估计的到达时间差异方差确定; 以及通过计算两个峰值的峰 - 峰差来计算（450）焦点处的响应强度。

3. 发明申请

WO2008105909A2 OPTIMAL BEAM PATTERN SYNTHESIS VIA MATRIX WEIGHTING 审中-公开
标题翻译：通过矩阵加权的最佳波束图案合成
公开(公告)号：WO2008105909A2
公开(公告)日：2008-09-04
申请号：PCT/US2007/074739
申请日：2007-07-30
申请人： UNIVERSITY OF FLORIDA , LI, Jian , XIE, Yao , ZHENG, Xiayu , WARD, James
发明人： LI, Jian , XIE, Yao , ZHENG, Xiayu , WARD, James
IPC分类号： H01Q3/30
CPC分类号： H01Q3/30

4. 发明申请

WO2007127929A1 METHOD AND SYSTEM FOR FLEXIBLE BEAMPATTERN DESIGN USING WAVEFORM DIVERSITY 审中-公开
标题翻译：使用波形多样性的柔性贝叶斯设计的方法和系统
公开(公告)号：WO2007127929A1
公开(公告)日：2007-11-08
申请号：PCT/US2007/067648
申请日：2007-04-27
申请人： UNNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC , LI, Jian , STOICA, Petre , XIE, Yao
发明人： LI, Jian , STOICA, Petre , XIE, Yao
IPC分类号： G01S7/28 , G01S7/282
CPC分类号： G01S7/2813 , G01S7/282
摘要： A system and method of designing a transmit beam pattern for Waveform Diversity is provided. The method can include minimizing a difference between the transmit beampattern and a desired beampattern under an elemental constraint, and minimizing the cross- correlations between the plurality of probing signals at the one or more target locations. Desirable features of a probing signal can be achieved by designing a covariance matrix of the probing signal. The method also can include minimizing the peak sidelobe level while pointing an energy beam in a prescribed direction under an elemental power constraint.
摘要翻译：提供了一种设计波形分集的发射波束图案的系统和方法。该方法可以包括在元素约束下最小化发射波形图和期望的波峰图案之间的差异，并且使得在一个或多个目标位置处的多个探测信号之间的相互关系最小化。可以通过设计探测信号的协方差矩阵来实现探测信号的期望特征。该方法还可以包括在基本功率约束下将能量束指向规定方向的同时最小化峰值旁瓣电平。

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