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    • 23. 发明申请
    • NONLINEAR SIGNAL PROCESSING METHOD AND APPARATUS FOR PULSED-BASED ULTRA-WIDEBAND SYSTEM
    • 基于脉冲超声波系统的非线性信号处理方法及装置
    • US20130058381A1
    • 2013-03-07
    • US13600681
    • 2012-08-31
    • Zhizhang ChenHong NieZhimeng Xu
    • Zhizhang ChenHong NieZhimeng Xu
    • H04B1/707
    • H04B1/71637
    • A method and apparatus are provided for processing a received pulsed-based ultra-wideband (UWB) signal before the signal is demodulated by an energy detection based receiver. A nonlinear signal processing unit contains one or multiple subunits, and each subunit consists of a nonlinear device and a filter. The nonlinear devices can be any devices that can shift signal, noise, and interference spectra in a nonlinear fashion, and include but are not limited to square law devices and Teager-Kaiser operators. By applying the nonlinear signal processing unit on the received UWB signal, a major part of the energy of noise and narrowband interferences is shifted to specific frequency ranges and then removed by the appropriate filter(s) in the nonlinear signal processing unit. Thus, the signal-to-noise-plus-interference ratio (SNIR) of the received UWB signal can be improved.
    • 提供一种方法和装置,用于在由基于能量检测的接收机解调信号之前处理接收的基于脉冲的超宽带(UWB)信号。 非线性信号处理单元包含一个或多个子单元,每个子单元由非线性设备和滤波器组成。 非线性器件可以是可以以非线性方式移动信号,噪声和干扰光谱的任何器件,并且包括但不限于平方律器件和Teager-Kaiser算子。 通过对所接收的UWB信号应用非线性信号处理单元,将噪声和窄带干扰能量的主要部分移动到特定频率范围,然后通过非线性信号处理单元中的适当滤波器去除。 因此,可以提高接收的UWB信号的信噪比加干扰比(SNIR)。
    • 29. 发明授权
    • Impulse ultra-wideband radio communication system
    • 脉冲超宽带无线电通信系统
    • US08023571B2
    • 2011-09-20
    • US12103117
    • 2008-04-15
    • Hong NieZhizhang Chen
    • Hong NieZhizhang Chen
    • H04L27/00
    • H04B1/719H04B1/71637
    • A method and apparatus are provided for implementing an impulse ultra-wideband communications system which combines the technique of transmitted reference (TR) with a code-sifted reference scheme that separates the reference and the data pulses with a sequence of codes such as a subset of Walsh codes. The combination of the two techniques in ultra-wideband (UWB) radio systems removes the wideband delay elements required by conventional TR UWB systems. The invention provides a system with no analog carriers and lower complexities than other UWB systems, and which has better performances, higher tolerance to nonlinearity, and larger capacities.
    • 提供了一种用于实现脉冲超宽带通信系统的方法和装置,该脉冲超宽带通信系统将传输参考(TR)的技术与使用诸如子集的子序列分离参考和数据脉冲的代码筛选参考方案进行组合 沃尔什码 超宽带(UWB)无线电系统中的两种技术的组合消除了传统TR UWB系统所需的宽带延迟元件。 本发明提供了一种没有模拟载波和比其他UWB系统更低复杂度的系统,其具有更好的性能,更高的对非线性的容忍性和更大的容量。