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1. 发明授权

US08208530B2 Apparatus and method for correcting IQ imbalance 有权
标题翻译：用于校正IQ不平衡的装置和方法
公开(公告)号：US08208530B2
公开(公告)日：2012-06-26
申请号：US11334628
申请日：2006-01-19
申请人： Loke Tan , Hanli Zou , William Ngai
发明人： Loke Tan , Hanli Zou , William Ngai
IPC分类号： H03K5/159
CPC分类号： H04L27/3863 , H03D3/009
摘要： An apparatus and method for correcting IQ imbalance are presented. An exemplary receiver for processing I and Q signals from a tuner includes: a non-decision directed (NDD) imbalance canceller coupled to receive the I and Q signals, and a decision directed (DD) imbalance canceller coupled to the non-decision directed imbalance canceller. The DD imbalance canceller converges after the NDD imbalance canceller converges, so as to correct IQ imbalances in the receiver. An exemplary method for processing I and Q signals from a tuner includes: (a) converging a NDD imbalance canceller to correct a majority of IQ imbalances, and (b) subsequently converging a DD imbalance canceller to correct a remainder of IQ imbalances not corrected in step (a). The apparatus and method correct frequency-dependent and frequency-independent IQ imbalances.
摘要翻译：提出了一种用于校正IQ不平衡的装置和方法。用于处理来自调谐器的I和Q信号的示例性接收器包括：耦合以接收I和Q信号的非决策导向（NDD）不平衡消除器，以及耦合到非决策导向不平衡的决策导向（DD）不平衡消除器消费者。在NDD不平衡消除器收敛之后，DD不平衡消除器收敛，以便纠正接收机中的IQ不平衡。用于处理来自调谐器的I和Q信号的示例性方法包括：（a）收敛NDD不平衡消除器以校正大多数IQ不平衡，以及（b）随后收敛DD不平衡消除器以校正未校正的IQ不平衡的余数步骤（a）。该装置和方法正确的频率依赖和频率无关的IQ失衡。

2. 发明申请

US20060203901A1 Apparatus and method for correcting IQ imbalance 有权
标题翻译：用于校正IQ不平衡的装置和方法
公开(公告)号：US20060203901A1
公开(公告)日：2006-09-14
申请号：US11334628
申请日：2006-01-19
申请人： Loke Tan , Hanli Zou , William Ngai
发明人： Loke Tan , Hanli Zou , William Ngai
IPC分类号： H03H7/30
CPC分类号： H04L27/3863 , H03D3/009
摘要： An apparatus and method for correcting IQ imbalance are presented. An exemplary receiver for processing I and Q signals from a tuner includes: a non-decision directed (NDD) imbalance canceller coupled to receive the I and Q signals, and a decision directed (DD) imbalance canceller coupled to the non-decision directed imbalance canceller. The DD imbalance canceller converges after the NDD imbalance canceller converges, so as to correct IQ imbalances in the receiver. An exemplary method for processing I and Q signals from a tuner includes: (a) converging a NDD imbalance canceller to correct a majority of IQ imbalances, and (b) subsequently converging a DD imbalance canceller to correct a remainder of IQ imbalances not corrected in step (a). The apparatus and method correct frequency-dependent and frequency-independent IQ imbalances.
摘要翻译：提出了一种用于校正IQ不平衡的装置和方法。用于处理来自调谐器的I和Q信号的示例性接收器包括：耦合以接收I和Q信号的非决策导向（NDD）不平衡消除器，以及耦合到非决策导向不平衡的决策导向（DD）不平衡消除器消费者。在NDD不平衡消除器收敛之后，DD不平衡消除器收敛，以便纠正接收机中的IQ不平衡。用于处理来自调谐器的I和Q信号的示例性方法包括：（a）收敛NDD不平衡消除器以校正大多数IQ不平衡，以及（b）随后收敛DD不平衡消除器以校正未校正的IQ不平衡的余数步骤（a）。该装置和方法正确的频率依赖和频率无关的IQ失衡。

3. 发明授权

US07050516B2 System and method for periodic noise avoidance in data transmission systems 有权
标题翻译：数据传输系统中周期性噪声回避的系统和方法
公开(公告)号：US07050516B2
公开(公告)日：2006-05-23
申请号：US10391555
申请日：2003-03-20
申请人： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Nabil Yousef , William Ngai
发明人： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Nabil Yousef , William Ngai
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04
CPC分类号： H04L1/20 , H04L1/0003
摘要： A system for periodic noise avoidance including a timing discriminator receiving an input signal from a communications channel. The input signal includes data packets and empty slots with periodic noise. The timing discriminator outputs a first error measurement of periodic noise width and a second error measurement of periodic noise position. A first loop filter inputs the first error measurement and outputs a width of the empty slots. A second loop filter inputs the second error measurement and outputs a frequency of the periodic noise. An oscillator inputs the width of the empty slots and the frequency, and outputs an empty slot waveform to the timing discriminator.
摘要翻译：一种用于周期性噪声回避的系统，包括接收来自通信信道的输入信号的定时鉴别器。输入信号包括具有周期性噪声的数据包和空槽。定时鉴别器输出周期性噪声宽度的第一误差测量值和周期噪声位置的第二误差测量值。第一个环路滤波器输入第一个误差测量值，并输出空时隙的宽度。第二个环路滤波器输入第二个误差测量并输出周期性噪声的频率。振荡器输入空插槽的宽度和频率，并将空槽波形输出到定时鉴频器。

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