公开(公告)号：US20110305306A1

公开(公告)日：2011-12-15

申请号：US12933416

申请日：2010-08-03

Applicant: Gang Hu ,  Yuanfei Nie ,  Meiwu Wu

Inventor： Gang Hu ,  Yuanfei Nie ,  Meiwu Wu

IPC: H04B1/10

CPC classification number: H03H21/0021 ,  H03H2021/0094

Abstract: The present invention relates to a blind adaptive filter for narrowband interference cancellation, which includes an adaptive filter, a delay unit coupled to the adaptive filter for generating a delayed signal with a predetermined delay length from the output signal of the adaptive filter, and an error calculation unit coupled to the adaptive filter and the delay unit. The error calculation unit compares the output signal from the adaptive filter and the delayed signal from the delay unit to extract error information, and feedback the first error information to the adaptive filter. The first error information is formed of a transfer function including a number of coefficients, and used to adjust the adaptive filter and remove interference in the next input signal. The disclosed technique is also applicable in wideband receivers, as well as resisting multiple strong narrowband interferences having a frequency sweep rate of tens of milliseconds.

Abstract translation: 本发明涉及一种用于窄带干扰消除的盲自适应滤波器，其包括自适应滤波器，耦合到自适应滤波器的延迟单元，用于从自适应滤波器的输出信号产生具有预定延迟长度的延迟信号，以及误差 计算单元耦合到自适应滤波器和延迟单元。 误差计算单元将来自自适应滤波器的输出信号和来自延迟单元的延迟信号进行比较以提取错误信息，并将第一误差信息反馈给自适应滤波器。 第一误差信息由包括多个系数的传递函数形成，并用于调整自适应滤波器并消除下一个输入信号中的干扰。 所公开的技术也可应用于宽带接收机，以及抵抗具有几十毫秒的频率扫描速率的多个强窄带干扰。

公开(公告)号：US20110026570A1

公开(公告)日：2011-02-03

申请号：US12544596

申请日：2009-08-20

Applicant: Shen Feng ,  Gang Hu ,  Yuanfei Nie ,  Meiwu Wu ,  Yu Chen ,  Xiaomin Si ,  Yiu Leechung

Inventor： Shen Feng ,  Gang Hu ,  Yuanfei Nie ,  Meiwu Wu ,  Yu Chen ,  Xiaomin Si ,  Yiu Leechung

IPC: H04B17/00

CPC classification number: H04B17/21

Abstract: A method and apparatus for measuring parameters of a receiver having a mixer for generating an I signal and a Q signal using an input signal, an I channel circuit for processing the I signal, and a Q channel circuit for processing the Q signal. The method includes feeding the receiver a first testing signal before the mixer. The method includes feeding the receiver a second testing signal on the I channel circuit. The method includes feeding the receiver a third testing signal on the Q channel circuit. The method includes measuring I/Q quadrature deviation and I/Q delay imbalance of the receiver using the first, the second, and the third testing signals. This separates the I/Q quadrature deviation and I/Q delay imbalance.

Abstract translation: 一种用于测量具有用于使用输入信号产生I信号和Q信号的混合器的接收机的参数的方法和装置，用于处理I信号的I信道电路和用于处理Q信号的Q信道电路。 该方法包括在混合器之前向接收器馈送第一测试信号。 该方法包括在I信道电路上馈送接收机第二测试信号。 该方法包括在Q通道电路上馈送接收器第三测试信号。 该方法包括使用第一，第二和第三测试信号测量接收机的I / Q正交偏差和I / Q延迟不平衡。 这样就分离了I / Q正交偏差和I / Q延迟不平衡。