公开(公告)号：US09246587B2

公开(公告)日：2016-01-26

申请号：US13927927

申请日：2013-06-26

Applicant: Broadcom Corporation

Inventor： William Bliss ,  John Wang

IPC: H04B10/69 ,  H04B10/2507

CPC classification number: H04B10/2507 ,  H04B10/69 ,  H04B10/695 ,  H04B10/697 ,  H04B10/6971

Abstract: Systems and methods for optical multi-path interference (MPI) compensation are provided. In an embodiment, a mean MPI signal representing a mean amplitude of the MPI in an input signal is generated and subtracted from a first estimate of transmitted amplitude of the input signal to generate a mean MPI compensated estimate of transmitted amplitude. The mean MPI compensated estimate of transmitted amplitude is sliced to generate a decision of transmitted amplitude of the input signal. The mean MPI signal can be generated using a mean MPI feedback loop or using an iterative feed-forward process. In another embodiment, mean MPI levels corresponding to respective transmitted intensity levels are generated and used to control slice levels of a slicer in order to compensate for MPI.

Abstract translation: 提供了光学多路径干扰（MPI）补偿的系统和方法。 在一个实施例中，产生表示输入信号中的MPI的平均幅度的平均MPI信号，并从输入信号的发送幅度的第一估计中减去，以产生发送振幅的平均MPI补偿估计。 传输幅度的平均MPI补偿估计被分片，以产生输入信号的发射幅度的决定。 可以使用平均MPI反馈回路或使用迭代前馈过程来生成平均MPI信号。 在另一个实施例中，产生对应于各个发射强度水平的平均MPI电平并用于控制限幅器的限幅电平以补偿MPI。

公开(公告)号：US09041571B2

公开(公告)日：2015-05-26

申请号：US14020529

申请日：2013-09-06

Applicant: Broadcom Corporation

Inventor： John Wang ,  Vasudevan Parthasarathy

IPC: H03M1/10 ,  H03M1/12

CPC classification number: H03M1/1205 ,  H03M1/1038 ,  H03M1/12 ,  H03M1/121

Abstract: Systems and methods are provided for calibrating an analog to digital converter (ADC) using one or more feedback mechanisms. In an embodiment, a capture memory module captures a portion of ADC data and post-processes the captured data using a microprocessor to perform calibration. Using the microprocessor, the capture memory module calibrates the ADC until the output of the ADC is within a desired range. In an embodiment, the capture memory module also captures a portion of data output from a digital correction module and post-processes this captured data using the microprocessor. Using the microprocessor, the capture memory module calibrates the digital correction module until the output of the digital correction module is within a desired range.

Abstract translation: 提供了使用一个或多个反馈机制来校准模数转换器（ADC）的系统和方法。 在一个实施例中，捕获存储器模块捕获一部分ADC数据，并使用微处理器对所捕获的数据进行后处理以执行校准。 使用微处理器，捕获存储器模块校准ADC，直到ADC的输出在所需的范围内。 在一个实施例中，捕获存储器模块还捕获从数字校正模块输出的一部分数据，并且使用微处理器对该捕获的数据进行后处理。 使用微处理器，捕获存储器模块校准数字校正模块，直到数字校正模块的输出在期望的范围内。

公开(公告)号：US09094130B2

公开(公告)日：2015-07-28

申请号：US14041949

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： William Bliss ,  John Wang

IPC: H04B10/04 ,  H04B10/54

CPC classification number: H04B10/541 ,  H04B10/58 ,  H04B10/588

Abstract: Embodiments for improving the Signal to Noise and Distortion (SINAD) ratio in Pulse Amplitude Modulation (PAM)-M optical intensity modulation systems, to enable higher data rate communications, are provided. Embodiments can be used to improve the linearity and reduce the distortion of electrical and electro-optics components (including optical modulators) in optical intensity modulation systems. Embodiments are well suited for use with PAM-M optical intensity modulators, such as segmented Vertical Cavity Surface Emitting Laser (WSEL) and segmented Mach-Zehnder Modulator (MZM), for example.

Abstract translation: 提供了用于改善脉冲幅度调制（PAM）-M光强度调制系统中的信噪比和失真（SINAD）比率的实施例，以实现更高的数据速率通信。 可以使用实施例来改善光强度调制系统中的电学和电光学部件（包括光学调制器）的线性并减小其失真。 实施例非常适用于例如PAM-M光强度调制器，例如分段垂直腔表面发射激光（WSEL）和分段马赫 - 曾德调制器（MZM）。

公开(公告)号：US20140321864A1

公开(公告)日：2014-10-30

申请号：US14041949

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： William BLISS ,  John Wang

IPC: H04B10/54

CPC classification number: H04B10/541 ,  H04B10/58 ,  H04B10/588

Abstract: Embodiments for improving the Signal to Noise and Distortion (SINAD) ratio in Pulse Amplitude Modulation (PAM)-M optical intensity modulation systems, to enable higher data rate communications, are provided. Embodiments can be used to improve the linearity and reduce the distortion of electrical and electro-optics components (including optical modulators) in optical intensity modulation systems. Embodiments are well suited for use with PAM-M optical intensity modulators, such as segmented Vertical Cavity Surface Emitting Laser (WSEL) and segmented Mach-Zehnder Modulator (MZM), for example.

Abstract translation: 提供了用于改善脉冲幅度调制（PAM）-M光强度调制系统中的信噪比和失真（SINAD）比率的实施例，以实现更高的数据速率通信。 可以使用实施例来改善光强度调制系统中的电学和电光学部件（包括光学调制器）的线性并减小其失真。 实施例非常适用于例如PAM-M光强度调制器，例如分段垂直腔表面发射激光（WSEL）和分段马赫 - 曾德调制器（MZM）。