公开(公告)号：US20040114542A1

公开(公告)日：2004-06-17

申请号：US10318423

申请日：2002-12-13

Applicant: TIOGA TECHNOLOGIES LTD ,  STMicroelectronics Ltd.

Inventor： Danny Stopler

IPC: H04B003/20

CPC classification number: H04B3/23 ,  H04M9/082

Abstract: A receiver for receiving an incoming signal over a communication medium includes an echo canceller, which is adapted to receive an outgoing signal transmitted over the communication medium, and to process the outgoing signal using a set of variable processing coefficients in order to generate an echo cancellation signal. A summer combines the incoming signal with the echo cancellation signal so as to generate an echo-cancelled signal. An equalizer applies an equalization operation to the echo-cancelled signal so as to generate an equalized signal. A residual echo cancellation circuit processes the equalized signal so as to adaptively update the variable processing coefficients of the echo canceller.

Abstract translation: 用于通过通信介质接收输入信号的接收机包括回波消除器，其适于接收通过通信介质发送的输出信号，并且使用一组可变处理系数来处理输出信号，以便产生回声消除 信号。 夏天将输入信号与回波消除信号相结合，以产生回声消除信号。 均衡器对回波消除信号施加均衡操作，以产生均衡的信号。 残余回波消除电路处理均衡信号，以自适应地更新回波消除器的可变处理系数。

公开(公告)号：US20030043925A1

公开(公告)日：2003-03-06

申请号：US09866870

申请日：2001-05-29

Applicant: Tioga Technologies, Ltd.

Inventor： Danny Stopler ,  Ram Zamir

IPC: H04B001/10 ,  H04B014/04

CPC classification number: H04L25/067 ,  H04L27/2647

Abstract: A system for detecting and correcting impulse noise present on an input data signal includes an impulse detector module receiving an input data signal and producing as output an correction enable signal indicating when an impulse correction is required. An impulse corrector module receives the input data signal and a correction enable signal and produces a corrected data signal, e.g., having the impulse canceled or blanked, as output. A reliability estimator and selector module receives the corrected data signal and the input data signal and selects as output the input signal which is more reliable. In one embodiment, the impulse detector includes first and second complementary impulse detectors, the outputs of which are analyzed by an enable and correction module to produce an impulse detection signal with improved accuracy. Preferably, the enable and correction module also indicates the most appropriate type of impulse correction in accordance with the detection signals from the complementary detectors. A novel system and method of detecting impulses based on Gram Schmidt techniques is also presented. In this method, one or more channels of a multi-channel data signal are kept free of data. When a whitening filter is applied, impulses on these quiet channels are emphasized. The Gram Schmidt technique exploits this fact to provide for improved impulse detection. The system can be modified to detect other types of low dimensionality noise.

Abstract translation: 用于检测和校正存在于输入数据信号上的脉冲噪声的系统包括：脉冲检测器模块，其接收输入数据信号，并产生指示何时需要脉冲校正的校正使能信号作为输出。 脉冲校正器模块接收输入数据信号和校正使能信号，并产生校正数据信号，例如使脉冲被消除或消隐，作为输出。 可靠性估计器和选择器模块接收校正的数据信号和输入数据信号，并选择更可靠的输入信号作为输出。 在一个实施例中，脉冲检测器包括第一和第二互补脉冲检测器，其输出由使能和校正模块分析以产生具有改进的精度的脉冲检测信号。 优选地，使能和校正模块还根据来自互补检测器的检测信号来指示最合适类型的脉冲校正。 还提出了一种基于Gram Schmidt技术检测脉冲的新颖系统和方法。 在该方法中，多信道数据信号的一个或多个信道被保存为没有数据。 当应用白化滤光片时，会强调这些静音通道上的脉冲。 Gram Schmidt技术利用这一事实来提供改进的脉冲检测。 可以修改系统以检测其他类型的低维度噪声。