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    • 3. 发明申请
    • NONLINEAR IDENTIFICATION USING COMPRESSED SENSING AND MINIMAL SYSTEM SAMPLING
    • 使用压缩感知和最小系统采样的非线性识别
    • WO2011139858A2
    • 2011-11-10
    • PCT/US2011034395
    • 2011-04-28
    • QUALCOMM INCAPARIN VLADIMIRGILMORE ROBERT P
    • APARIN VLADIMIRGILMORE ROBERT P
    • G06K9/00G06N3/00H03M1/12H03M7/30H03M13/00H04B1/04H04B7/005
    • H03M7/30G06K9/00496H03F1/3258
    • Compressed sensing is used to determine a model of a nonlinear system. In one example, L1-norm minimization is used to fit a generic model function to a set of samples thereby obtaining a fitted model. Convex optimization can be used to determine model coefficients that minimize the L1-norm. In one application, the fitted model is used to calibrate a predistorter. In another application, the fitted model function is used to predict future actions of the system. The generic model is made of up of constituent functions that may or may not be orthogonal to one another. In one example, an initial model function of non-orthogonal constituent functions is orthogonalized to generate a generic model function of constituent orthogonal functions. Although the number of samples to which the generic model is fitted can be less than the number of model coefficients, the fitted model nevertheless accurately models system nonlinearities.
    • 压缩感测用于确定非线性系统的模型。 在一个示例中,L1范数最小化用于将通用模型函数拟合到一组样本,从而获得拟合模型。 凸度优化可用于确定最小化L1范数的模型系数。 在一个应用中,拟合模型用于校准预失真器。 在另一个应用中,拟合模型函数用于预测系统的未来动作。 通用模型由可能彼此或可能不相互正交的组成函数构成。 在一个示例中,非正交组成函数的初始模型函数被正交化以生成组成正交函数的通用模型函数。 虽然通用模型拟合的样本数量可以小于模型系数的数量,但拟合模型仍然能够准确地模拟系统非线性。
    • 5. 发明申请
    • SIGNAL SEPARATION FOR ENERGY HARVESTING
    • 能量收集信号分离
    • WO2011038041A1
    • 2011-03-31
    • PCT/US2010/049884
    • 2010-09-22
    • QUALCOMM IncorporatedGILMORE, Robert P.
    • GILMORE, Robert P.
    • H02J17/00H04B1/38H04M1/60
    • H04B1/3877H02J7/025H02J17/00H02J50/20H04M1/6066
    • Techniques for designing a communications unit including a signal separation module for energy harvesting. In an exemplary aspect, the signal separation module includes first and second quadrature hybrids coupled by band-pass filters (BPF's). Incoming signals within the pass-band of the BPF's are directed through the quadrature hybrids and through the BPF's, and emerge as a desired pass-band signal to be processed by an RX processing module. Incoming signals lying outside the pass-band of the BPF's are reflected from the BPF's back to the first quadrature hybrid, and output as a non-pass-band signal to be processed by an energy harvesting module. In a further exemplary aspect, the signal separation module resides in a detachable module coupleable to a wireless communications device, and a signal transmitted by the wireless communications device is coupled to the signal separation module for energy harvesting.
    • 用于设计包括用于能量收集的信号分离模块的通信单元的技术。 在示例性方面,信号分离模块包括通过带通滤波器(BPF)耦合的第一和第二正交混合。 BPF通带内的传入信号通过正交混合和通过BPF引导,并出现为要由RX处理模块处理的期望的通带信号。 位于BPF通带外的传入信号从BPF反射回第一正交混合,并作为非通带信号输出,由能量采集模块处理。 在另一示例性方面,信号分离模块驻留在可耦合到无线通信设备的可拆卸模块中,并且由无线通信设备发送的信号耦合到用于能量收集的信号分离模块。