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    • 2. 发明申请
    • SPARSE SAMPLING OF SIGNAL INNOVATIONS
    • 信号创新的稀疏抽样
    • WO2009096994A3
    • 2012-05-31
    • PCT/US2008067159
    • 2008-06-16
    • QUALCOMM INCBLU THIERRYVETTERLI MARTINCOULOT LIONEL
    • BLU THIERRYVETTERLI MARTINCOULOT LIONEL
    • G06F17/10
    • H04L25/03006G06F17/10H03M1/0626H03M1/127H04B1/71637H04L27/2647
    • Signals, including signals from outside of the subspace of bandlimited signals associated with the Shannon theorem, are acquired while still providing an acceptable reconstruction. In some aspects a denoising process is used in conjunction with sparse sampling techniques. For example, a denoising process utilizing a Cadzow algorithm may be used to reduce the amount of noise associated with sampled information. In some aspects the denoising process may be iterative such that the denoising process is repeated until the samples are denoised to a sufficient degree. In some aspects, the denoising process converts a set of received samples into another set corresponding to a signal with a Finite Rate of Innovation (FRI), or to an approximation of such a signal. The disclosure relates in some aspects to combination of a denoising process with annihilating filter methods to retrieve information from a noisy, sparse sampled signal. The disclosure relates in some aspects to determining a sampling kernel to be used to sample the signal based on noise associated with the signal. The disclosure relates in some aspects to determining the number of samples to obtain from a signal over a period of time based on noise associated with the signal. The disclosure relates in some aspects to determining the finite number of innovations of a received signal.
    • 获取信号,包括来自与香农定理相关的带限信号的子空间外部的信号,同时仍然提供可接受的重建。 在一些方面,去噪过程与稀疏采样技术结合使用。 例如,可以使用利用Cadzow算法的去噪过程来减少与采样信息相关联的噪声量。 在一些方面,去噪过程可以是迭代的,使得去噪过程被重复直到样本被去噪到足够的程度。 在一些方面,去噪过程将一组接收样本转换为与具有有限创新速率(FRI)的信号相对应的另一组,或者近似于这样的信号。 本公开在一些方面涉及去噪处理与湮没滤波方法的组合以从嘈杂的稀疏采样信号中检索信息。 本发明在一些方面涉及基于与信号相关联的噪声来确定将被用于采样信号的采样内核。 本公开在一些方面涉及基于与信号相关联的噪声来确定在一段时间内从信号获得的采样的数量。 本公开在一些方面涉及确定接收信号的有限数量的创新。
    • 3. 发明申请
    • SPARSE SAMPLING OF SIGNAL INNOVATIONS
    • 信号创新的微量抽样
    • WO2009096995A3
    • 2012-07-19
    • PCT/US2008067163
    • 2008-06-16
    • QUALCOMM INCBLU THIERRYVETTERLI MARTINCOULOT LIONEL
    • BLU THIERRYVETTERLI MARTINCOULOT LIONEL
    • G06F17/10H03M1/12
    • H04L25/03006G06F17/10H03M1/0626H03M1/127H04B1/71637H04L27/2647
    • Signals, including signals from outside of the subspace of bandlimited signals associated with the Shannon theorem, are acquired while still providing an acceptable reconstruction. In some aspects a denoising process is used in conjunction with sparse sampling techniques. For example, a denoising process utilizing a Cadzow algorithm may be used to reduce the amount of noise associated with sampled information. In some aspects the denoising process may be iterative such that the denoising process is repeated until the samples are denoised to a sufficient degree. In some aspects, the denoising process converts a set of received samples into another set corresponding to a signal with a Finite Rate of Innovation (FRI), or to an approximation of such a signal. The disclosure relates in some aspects to combination of a denoising process with annihilating filter methods to retrieve information from a noisy, sparse sampled signal. The disclosure relates in some aspects to determining a sampling kernel to be used to sample the signal based on noise associated with the signal. The disclosure relates in some aspects to determining the number of samples to obtain from a signal over a period of time based on noise associated with the signal. The disclosure relates in some aspects to determining the finite number of innovations of a received signal.
    • 包括来自与香农定理相关联的带限信号的子空间之外的信号,同时仍然提供可接受的重建。 在某些方面,去噪过程与稀疏采样技术结合使用。 例如,可以使用利用Cadzow算法的去噪处理来减少与采样信息相关联的噪声量。 在一些方面,去噪过程可以是迭代的,使得去除去噪过程直到样品被去除去达到足够的程度。 在一些方面,去噪处理将一组接收到的采样转换为对应于具有有限创新速率(FRI)的信号的另一组,或将其转换为近似这样的信号。 本公开在一些方面涉及去噪处理与消除滤波器方法的组合以从嘈杂的稀疏采样信号中检索信息。 本公开在一些方面涉及确定要用于基于与信号相关联的噪声对信号进行采样的采样内核。 本公开在一些方面涉及基于与信号相关联的噪声来确定在一段时间内从信号获得的样本数量。 本公开在一些方面涉及确定接收信号的创新的有限数量。
    • 5. 发明申请
    • A METHOD AND AN APPARATUS FOR ADAPTIVELY LEARNING A SPARSE IMPULSE RESPONSE OF A CONTINUOUS CHANNEL
    • 适应学习连续通道的微小冲击反应的方法和装置
    • WO2011059767A3
    • 2011-10-13
    • PCT/US2010054560
    • 2010-10-28
    • QUALCOMM INCVETTERLI MARTINLU YUEMCCORMICK MARTIN
    • VETTERLI MARTINLU YUEMCCORMICK MARTIN
    • H04L25/02H04B3/23H04L25/03
    • H04L25/0212H04L25/025H04L25/03038H04L25/03987H04L2025/03617H04L2025/03636Y10T428/115
    • A method for adaptively learning a sparse impulse response (100) of a continuous channel to which an input signal (x (t)) is applied and which delivers an output signal (y(t)), comprising the following steps: - low-pass filtering the input signal and the output signal and obtain a filtered input signal (xF(t)) and a filtered output signal (yF(t)); - sampling the filtered input signal and the filtered output signal with a sampling rate below the Nyquist rate and obtaining a sampled input signal (xS(t)) and a sampled output signal (yS(t)); - retrieving from the sampled input signal (xS(t)) and the sampled output signal (yS(t)) an estimate (400) of the sparse impulse response (100) of the continuous channel. This method can be applied in CDMA channels, in acoustic room context, in ultra-wideband ranging and line echo cancellation problems, in transmission systems for optical fibres, in body scan devices, to name a few.
    • 一种用于自适应地学习施加输入信号(x(t))的连续信道的稀疏脉冲响应(100)并且传送输出信号(y(t))的方法,包括以下步骤: 对输入信号和输出信号进行滤波,并获得滤波输入信号(xF(t))和滤波输出信号(yF(t)); - 采样速率低于奈奎斯特速率并获得采样输入信号(xS(t))和采样输出信号(yS(t)),对滤波后的输入信号和滤波后的输出信号进行采样; - 从采样的输入信号(xS(t))和采样的输出信号(yS(t))中获取连续信道的稀疏脉冲响应(100)的估计(400)。 这种方法可以应用于CDMA信道,在声学室上下文中,在超宽带测距和线路回声消除问题中,在用于光纤的传输系统中,在身体扫描设备中,仅举几例。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR ALLOCATING A PILOT SIGNAL
    • 分配引航信号的方法和装置
    • WO2011053732A3
    • 2011-09-29
    • PCT/US2010054565
    • 2010-10-28
    • QUALCOMM INCVETTERLI MARTINHORMATI ALIBARBOTIN YANN
    • VETTERLI MARTINHORMATI ALIBARBOTIN YANN
    • H04L5/00H04L25/02
    • H04L5/0051H04L25/0228H04L25/03987
    • Embodiments include a method for sending a selected number of pilots (20) to a sparse channel having a channel impulse response limited in time comprising sending the selected number of the pilots (20). The pilots (20) are equally spaced in the frequency domain the number is selected based on the finite rate of innovation of the channel impulse response. Once received the pilots (20), such a channel is estimated by: low-pass filtering (100) the received pilots, sampling (200) the filtered pilots with a rate below the Nyquist rate of the pilots, applying a FFT (300) on the sampled pilots, verifying (500) the level of noise of the transformed pilots, if the level of noise is below to a determined threshold, applying an annihilating filter method (600) to the transformed pilots, and dividing the temporal parameters by the distance (D) between two consecutive pilots.
    • 实施例包括用于将选定数量的导频(20)发送到具有时间限制的信道脉冲响应的稀疏信道的方法,包括发送所选择的导频数量(20)。 导频(20)在频域中等间隔,其数量基于信道脉冲响应的有限创新速率来选择。 一旦接收到导频(20),这样的信道是通过以下方式估计的:对接收到的导频进行低通滤波(100),以低于导频的奈奎斯特速率的频率采样(200)经滤波的导频,应用FFT(300) 在采样导频上,如果噪声水平低于确定的阈值,验证(500)变换导频的噪声水平,对变换的导频应用湮灭滤波方法(600),并将时间参数除以 两个连续飞行员之间的距离(D)。