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公开(公告)号：US20100067636A1
公开(公告)日：2010-03-18
申请号：US12546537
申请日：2009-08-24
IPC分类号： H04L7/00
CPC分类号： H03L7/0891 , H03L7/093
摘要： An example method includes receiving a phase correction signal representing a phase difference between a source signal and a reference signal, generating a first control voltage from the phase correction signal using a charge pump circuit, generating a second control voltage from the phase correction signal in response to a digitally filtered version of the phase correction signal, wherein the second control voltage corrects for an offset error present in the first control voltage, calculating a VCO control signal based on a linear combination of the first and the second control voltages; and generating the source signal in response to the VCO control signal.
摘要翻译： 示例性方法包括接收表示源信号和参考信号之间的相位差的相位校正信号，使用电荷泵电路从相位校正信号产生第一控制电压，从相位校正信号产生响应中的第二控制电压 相位校正信号的数字滤波版本，其中第二控制电压校正存在于第一控制电压中的偏移误差，基于第一和第二控制电压的线性组合计算VCO控制信号; 以及响应于VCO控制信号产生源信号。
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公开(公告)号：US08358729B2
公开(公告)日：2013-01-22
申请号：US12546537
申请日：2009-08-24
IPC分类号： H03D3/24
CPC分类号： H03L7/0891 , H03L7/093
摘要： An example method includes receiving a phase correction signal representing a phase difference between a source signal and a reference signal, generating a first control voltage from the phase correction signal using a charge pump circuit, generating a second control voltage from the phase correction signal in response to a digitally filtered version of the phase correction signal, wherein the second control voltage corrects for an offset error present in the first control voltage, calculating a VCO control signal based on a linear combination of the first and the second control voltages; and generating the source signal in response to the VCO control signal.
摘要翻译： 示例性方法包括接收表示源信号和参考信号之间的相位差的相位校正信号，使用电荷泵电路从相位校正信号产生第一控制电压，从相位校正信号产生响应中的第二控制电压 相位校正信号的数字滤波版本，其中第二控制电压校正存在于第一控制电压中的偏移误差，基于第一和第二控制电压的线性组合计算VCO控制信号; 以及响应于VCO控制信号产生源信号。
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公开(公告)号：US20090219008A1
公开(公告)日：2009-09-03
申请号：US12039424
申请日：2008-02-28
IPC分类号： G01R13/02
摘要： Methods and systems are provided for an improved phase detector utilizing analog-to-digital converter (ADC) components. In an embodiment, the method includes from an ADC having a sampling clock signal that determines sampling instants, obtaining a first comparison value between an analog signal and a first threshold voltage at a first sampling instant, and obtaining a second comparison value between the analog signal and a second threshold voltage at a second sampling instant. The method further includes, from a supplemental circuit, obtaining a third comparison value between the analog signal and a third threshold voltage at a third sampling instant between the first and second sampling instants. The method further includes processing the first, second, and third comparison values to determine a phase relationship between the analog signal and the sampling clock.
摘要翻译： 为使用模数转换器（ADC）组件的改进的相位检测器提供了方法和系统。 在一个实施例中，该方法包括来自具有确定采样时刻的采样时钟信号的ADC，在第一采样时刻获得模拟信号和第一阈值电压之间的第一比较值，以及获得模拟信号之间的第二比较值 和第二采样时刻的第二阈值电压。 该方法还包括从补充电路在第一和第二采样时刻之间的第三采样时刻获得模拟信号和第三阈值电压之间的第三比较值。 该方法还包括处理第一，第二和第三比较值以确定模拟信号和采样时钟之间的相位关系。
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公开(公告)号：US07750831B2
公开(公告)日：2010-07-06
申请号：US12039424
申请日：2008-02-28
IPC分类号： H03M1/00
摘要： Methods and systems are provided for an improved phase detector utilizing analog-to-digital converter (ADC) components. In an embodiment, the method includes from an ADC having a sampling clock signal that determines sampling instants, obtaining a first comparison value between an analog signal and a first threshold voltage at a first sampling instant, and obtaining a second comparison value between the analog signal and a second threshold voltage at a second sampling instant. The method further includes, from a supplemental circuit, obtaining a third comparison value between the analog signal and a third threshold voltage at a third sampling instant between the first and second sampling instants. The method further includes processing the first, second, and third comparison values to determine a phase relationship between the analog signal and the sampling clock.
摘要翻译： 为使用模数转换器（ADC）组件的改进的相位检测器提供了方法和系统。 在一个实施例中，该方法包括来自具有确定采样时刻的采样时钟信号的ADC，在第一采样时刻获得模拟信号和第一阈值电压之间的第一比较值，以及获得模拟信号之间的第二比较值 和第二采样时刻的第二阈值电压。 该方法还包括从补充电路在第一和第二采样时刻之间的第三采样时刻获得模拟信号和第三阈值电压之间的第三比较值。 该方法还包括处理第一，第二和第三比较值以确定模拟信号和采样时钟之间的相位关系。
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5.发明申请公开(公告)号：US20100008679A1
公开(公告)日：2010-01-14
申请号：US12171201
申请日：2008-07-10
申请人： Christopher R. Cole , Daniel Mahgerefteh , The'Linh Nguyen , Andrew C. Singer , Naresh Ramnath Shanbhag
发明人： Christopher R. Cole , Daniel Mahgerefteh , The'Linh Nguyen , Andrew C. Singer , Naresh Ramnath Shanbhag
IPC分类号： H04B10/12
CPC分类号： H04B10/58 , H04B10/40 , H04B10/532 , H04B10/5561 , H04B10/69
摘要： A high-speed optical transmitter comprises multiple digital lanes that are provided to a bank of digital-to-analog converters. The analog signals are then used to Phase Shift Keyed (PSK) modulation using a Chirp Managed Laser (CML)-based transmitter, and potentially using dual polarization. A corresponding optical receiver receives the sequence of optical signals at a demodulator. For each polarization, the demodulator includes a corresponding demodulation channel that is configured to demodulate that polarization component of the optical signal into one or more signal components. Each of these signal components is converted into a corresponding digital signal using a corresponding analog-to-digital converter. In the case of higher-order PSK modulation (e.g., 8PSK or higher), for each polarization, the analog converter has a lower sampling rate than for QPSK modulation.
摘要翻译： 高速光发射机包括提供给数模转换器组的多个数字通道。 然后使用基于啁啾管理激光（CML）的发射机将模拟信号用于相移键控（PSK）调制，并可能使用双极化。 相应的光接收机在解调器处接收光信号序列。 对于每个极化，解调器包括相应的解调信道，其被配置为将该光信号的偏振分量解调为一个或多个信号分量。 这些信号分量中的每一个都使用对应的模拟 - 数字转换器转换成相应的数字信号。 在高阶PSK调制（例如，8PSK或更高）的情况下，对于每个极化，模拟转换器具有比对QPSK调制低的采样率。
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6.发明授权公开(公告)号：US08068742B2
公开(公告)日：2011-11-29
申请号：US12171201
申请日：2008-07-10
申请人： Christopher R. Cole , Daniel Mahgerefteh , The'Linh Nguyen , Andrew C. Singer , Naresh Ramnath Shanbhag
发明人： Christopher R. Cole , Daniel Mahgerefteh , The'Linh Nguyen , Andrew C. Singer , Naresh Ramnath Shanbhag
IPC分类号： H04B10/00
CPC分类号： H04B10/58 , H04B10/40 , H04B10/532 , H04B10/5561 , H04B10/69
摘要： A high-speed optical transmitter comprises multiple digital lanes that are provided to a bank of digital-to-analog converters. The analog signals are then used to Phase Shift Keyed (PSK) modulation using a Chirp Managed Laser (CML)-based transmitter, and potentially using dual polarization. A corresponding optical receiver receives the sequence of optical signals at a demodulator. For each polarization, the demodulator includes a corresponding demodulation channel that is configured to demodulate that polarization component of the optical signal into one or more signal components. Each of these signal components is converted into a corresponding digital signal using a corresponding analog-to-digital converter. In the case of higher-order PSK modulation (e.g., 8PSK or higher), for each polarization, the analog converter has a lower sampling rate than for QPSK modulation.
摘要翻译： 高速光发射机包括提供给数模转换器组的多个数字通道。 然后使用基于啁啾管理激光（CML）的发射器将模拟信号用于相移键控（PSK）调制，并可能使用双极化。 相应的光接收机在解调器处接收光信号序列。 对于每个极化，解调器包括相应的解调信道，其被配置为将该光信号的偏振分量解调为一个或多个信号分量。 这些信号分量中的每一个都使用对应的模拟 - 数字转换器转换成相应的数字信号。 在高阶PSK调制（例如，8PSK或更高）的情况下，对于每个极化，模拟转换器具有比对QPSK调制低的采样率。
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7.发明申请TUNING SYSTEM AND METHOD USING A SIMULATED BIT ERROR RATE FOR USE IN AN ELECTRONIC DISPERSION COMPENSATOR 有权调谐系统和使用模拟位错误率的方法用于电子分散补偿器公开(公告)号：US20090262870A1
公开(公告)日：2009-10-22
申请号：US12107581
申请日：2008-04-22
CPC分类号： H04L25/0212 , H04B10/2507 , H04B10/697 , H04B17/0085 , H04B17/3912 , H04B2210/252 , H04L25/025
摘要： A system and method is disclosed for controlling signal conditioning parameters and a sampling parameter controlling conversion of a received signal to digital sampled values prior to decoding. The sampled values are decoded according to a comparison with expected values calculated according to a model of a transmission channel. The model is also updated from time to time by comparing the expected values with actual sampled values. Variation of the expected values over time is calculated. One or more of the signal conditioning parameters and the sampling parameter are adjusted according to a numerical minimization method such that the system BER is reduced.
摘要翻译： 公开了一种用于控制信号调节参数的系统和方法，以及在解码之前控制接收信号到数字采样值的转换的采样参数。 根据与根据传输信道的模型计算的预期值的比较，对采样值进行解码。 通过将预期值与实际采样值进行比较，还会不时更新模型。 计算期望值随时间的变化。 根据数字最小化方法来调整信号调理参数和采样参数中的一个或多个，使得系统BER减小。
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8.发明申请CHIRPED LASER WITH PASSIVE FILTER ELEMENT FOR DIFFERENTIAL PHASE SHIFT KEYING GENERATION 有权带有被动滤波器元件的激光激光器，用于差分相移键控发生器公开(公告)号：US20080247763A1
公开(公告)日：2008-10-09
申请号：US12014676
申请日：2008-01-15
CPC分类号： H04B10/5561 , H01S3/0057 , H01S3/0078
摘要： A method for generating D-N-PSK optical signals is disclosed wherein a laser is modulated to generate optical signal pairs including phase modulated and fixed phase portions, the phase modulated portions having a frequency encoding one or more data symbols and the fixed phase portion having a carrier frequency and a phase corresponding to the immediately preceding phase modulated portion. The output of the laser is passed through an optical spectrum reshaper having a transmission function chosen to attenuate a plurality of the phase modulated portions relative to the fixed phase portions. The phase modulated portions may have N frequency levels located on either side of the carrier frequency. One of the N frequency levels may be equal to the carrier frequency.
摘要翻译： 公开了一种用于产生DN-PSK光信号的方法，其中调制激光器以产生包括相位调制和固定相位部分的光信号对，所述相位调制部分具有对一个或多个数据符号进行编码的频率，并且具有载波的固定相位部分 频率和对应于紧接在前的相位调制部分的相位。 激光器的输出通过具有选择为相对于固定相位部分衰减多个相位调制部分的透射功能的光谱整形器。 相位调制部分可以具有位于载波频率的任一侧的N个频率电平。 N个频率电平中的一个可以等于载波频率。
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9.发明授权Tuning system and method using a simulated bit error rate for use in an electronic dispersion compensator 有权调谐系统和方法使用模拟误码率用于电子色散补偿器公开(公告)号：US08102938B2
公开(公告)日：2012-01-24
申请号：US12107581
申请日：2008-04-22
IPC分类号： H04L27/00
CPC分类号： H04L25/0212 , H04B10/2507 , H04B10/697 , H04B17/0085 , H04B17/3912 , H04B2210/252 , H04L25/025
摘要： A system and method is disclosed for controlling signal conditioning parameters and a sampling parameter controlling conversion of a received signal to digital sampled values prior to decoding. The sampled values are decoded according to a comparison with expected values calculated according to a model of a transmission channel. The model is also updated from time to time by comparing the expected values with actual sampled values. Variation of the expected values over time is calculated. One or more of the signal conditioning parameters and the sampling parameter are adjusted according to a numerical minimization method such that the system BER is reduced.
摘要翻译： 公开了一种用于控制信号调节参数的系统和方法，以及在解码之前控制接收信号到数字采样值的转换的采样参数。 根据与根据传输信道的模型计算的预期值的比较，对采样值进行解码。 通过将预期值与实际采样值进行比较，还会不时更新模型。 计算期望值随时间的变化。 根据数字最小化方法来调整信号调理参数和采样参数中的一个或多个，使得系统BER减小。
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10.发明授权Iterative MMSE equalization-decoder soft information exchange decoding method and device 有权迭代MMSE均衡解码软交换解码方法及装置公开(公告)号：US07016440B1
公开(公告)日：2006-03-21
申请号：US09640204
申请日：2000-08-16
申请人： Andrew C. Singer , Ralf Koetter
发明人： Andrew C. Singer , Ralf Koetter
IPC分类号： H04B1/10
CPC分类号： H04L1/005 , H04L1/0071 , H04L25/03171 , H04L2025/03401
摘要： A method and device employing an iterative MMSE equalization-decoder soft information exchange decoding. The method uses a MMSE equalizer which receives and outputs soft information. The equalizer exchanges soft information with a soft input soft output decoder, preferably an error correction decoder. The nature of the equalizer permits solutions beyond one-dimensional data streams and permits solutions for long channel lengths and multi-dimensional data since the solution is not a function of the channel impulse response.
摘要翻译： 一种采用迭代MMSE均衡解码软件信息交换解码的方法和装置。 该方法使用接收并输出软信息的MMSE均衡器。 均衡器与软输入软输出解码器交换软信息，优选地是纠错解码器。 均衡器的性质允许超越一维数据流的解决方案，并允许长通道长度和多维数据的解决方案，因为该解决方案不是信道脉冲响应的函数。
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