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    • 1. 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。