公开(公告)号：US20080291992A1

公开(公告)日：2008-11-27

申请号：US11752440

申请日：2007-05-23

申请人： Yih-Ming Tsuie ,  Ming-Luen Liou ,  Chien-Huei Lin ,  Chih-Hung Lin ,  Wei-Tsen Lin

发明人： Yih-Ming Tsuie ,  Ming-Luen Liou ,  Chien-Huei Lin ,  Chih-Hung Lin ,  Wei-Tsen Lin

IPC分类号： H04B1/12 ,  H04B1/66 ,  H04B3/04

CPC分类号： H04L27/38 ,  H04L2027/0046 ,  H04L2027/0081

摘要： A communication system and a method which can reduce the effect of burst noise. The communication system comprises a controllable oscillator, a mixer, a decision circuit, a comparator, a loop filter, and a controller. The controllable oscillator generates an oscillating signal. The mixer coupled to the controllable receives input data and mixes the input data with the oscillating signal. The decision circuit receives the mixed input data and generates an estimated symbol. The comparator generates a decision error between the estimated symbol and the mixed input data. The loop filter coupled to the controllable oscillator filters the decision error, and generates a filtered decision error, and the controllable oscillator generates the oscillating signal according to the filtered decision error. The controller reduces a bandwidth of the loop filter according to the decision error.

摘要翻译： 一种可以减少突发噪声影响的通信系统和方法。 通信系统包括可控振荡器，混频器，判定电路，比较器，环路滤波器和控制器。 可控振荡器产生振荡信号。 耦合到可控制器的混频器接收输入数据并将输入数据与振荡信号混合。 判定电路接收混合输入数据并生成估计符号。 比较器在估计符号和混合输入数据之间产生判定误差。 耦合到可控振荡器的环路滤波器对决策误差进行滤波，并产生滤波决策误差，并且可控振荡器根据滤波决策误差产生振荡信号。 控制器根据决策误差降低环路滤波器的带宽。

公开(公告)号：US07751514B2

公开(公告)日：2010-07-06

申请号：US11752440

申请日：2007-05-23

申请人： Yih-Ming Tsuie ,  Ming-Luen Liou ,  Chien-Huei Lin ,  Chih-Hung Lin ,  Wei-Tsen Lin

发明人： Yih-Ming Tsuie ,  Ming-Luen Liou ,  Chien-Huei Lin ,  Chih-Hung Lin ,  Wei-Tsen Lin

IPC分类号： H04B1/10 ,  H03D3/24

CPC分类号： H04L27/38 ,  H04L2027/0046 ,  H04L2027/0081

摘要： A communication system and a method which can reduce the effect of burst noise. The communication system comprises a controllable oscillator, a mixer, a decision circuit, a comparator, a loop filter, and a controller. The controllable oscillator generates an oscillating signal. The mixer coupled to the controllable receives input data and mixes the input data with the oscillating signal. The decision circuit receives the mixed input data and generates an estimated symbol. The comparator generates a decision error between the estimated symbol and the mixed input data. The loop filter coupled to the controllable oscillator filters the decision error, and generates a filtered decision error, and the controllable oscillator generates the oscillating signal according to the filtered decision error. The controller reduces a bandwidth of the loop filter according to the decision error.

摘要翻译： 一种可以减少突发噪声影响的通信系统和方法。 通信系统包括可控振荡器，混频器，判定电路，比较器，环路滤波器和控制器。 可控振荡器产生振荡信号。 耦合到可控制器的混频器接收输入数据并将输入数据与振荡信号混合。 判定电路接收混合输入数据并生成估计符号。 比较器在估计符号和混合输入数据之间产生判定误差。 耦合到可控振荡器的环路滤波器对决策误差进行滤波，并产生滤波决策误差，并且可控振荡器根据滤波决策误差产生振荡信号。 控制器根据决策误差降低环路滤波器的带宽。

公开(公告)号：US20050089087A1

公开(公告)日：2005-04-28

申请号：US10808888

申请日：2004-03-25

申请人： Wen-Ho Sheen ,  Chii-Horng Chen ,  Chien-Huei Lin ,  Hsin-Hsiung Fang

发明人： Wen-Ho Sheen ,  Chii-Horng Chen ,  Chien-Huei Lin ,  Hsin-Hsiung Fang

IPC分类号： H04B1/69 ,  H04B1/707

CPC分类号： H04B1/70755 ,  H04B1/709

摘要： A signal detection method with high detection probability and low false alarm rate is provided for spread spectrum communication systems. The method includes steps of a) receiving discrete-time input signal, b) converting the input signal into a correlator output signal with finite number of values, c) selecting a maximum value and a minimum value from the magnitude of values, respectively, d) dividing the maximum value by the minimum value for obtaining an enhanced peak value of the correlator output signal, and e) comparing the enhanced peak value of the correlator output signal with a predetermined threshold, wherein the input signal is detected as a spread spectrum signal if the enhanced peak value of the correlator output signal is greater than or equal to the predetermined threshold, whereas the input signal is not detected as a spread spectrum signal if the enhanced peak value of the correlator output signal is less than the predetermined threshold. Simulation results show that the proposed method outperforms the conventional method.

摘要翻译： 为扩频通信系统提供了具有高检测概率和低误报率的信号检测方法。 该方法包括以下步骤：a）接收离散时间输入信号，b）将输入信号转换为具有有限数量值的相关器输出信号，c）从值的大小分别选择最大值和最小值d ）将最大值除以用于获得相关器输出信号的增强峰值的最小值，以及e）将相关器输出信号的增强峰值与预定阈值进行比较，其中输入信号被检测为扩频信号 如果相关器输出信号的增强峰值大于或等于预定阈值，而如果相关器输出信号的增强峰值小于预定阈值，则输入信号未被检测为扩频信号。 仿真结果表明，该方法优于常规方法。