公开(公告)号：US20160134921A1

公开(公告)日：2016-05-12

申请号：US14988338

申请日：2016-01-05

Applicant: MaxLinear, Inc.

Inventor： Anand Anandakumar ,  Sheng Ye ,  Curtis Ling

IPC: H04N21/426 ,  H04N21/61 ,  H04N21/443 ,  H04N21/462 ,  H04N5/50 ,  H04N21/438

CPC classification number: H04N21/4263 ,  H04N5/44 ,  H04N5/50 ,  H04N21/4383 ,  H04N21/4436 ,  H04N21/4622 ,  H04N21/6143

Abstract: Methods and systems for multi-path video and network channels may comprise a communication device comprising a wideband path (WB) and a narrowband path (NB). A video channel and a network channel may be received in the WB when the device is operating in a first stage. A video channel and a network channel may be received in the WB and the network channel may also be received in the NB when the device is operating in a second stage. The network channel may be received in the NB when the device is operating in a third stage. The reception of the network channel from both the WB and NB may enable a continuous reception of the network channel in a transition between the first and third stages. The WB may be operable to receive a plurality of channels and the NB may be operable to receive a single channel.

Abstract translation: 用于多路径视频和网络信道的方法和系统可以包括包括宽带路径（WB）和窄带路径（NB）的通信设备。 当设备在第一阶段中操作时，可以在WB中接收视频信道和网络信道。 在WB中可以接收视频信道和网络信道，并且当设备在第二阶段中操作时，也可以在NB中接收网络信道。 当设备在第三阶段中操作时，可以在NB中接收网络信道。 来自WB和NB的网络信道的接收可以在第一和第三阶段之间的转变中实现网络信道的连续接收。 WB可以用于接收多个信道，并且NB可以用于接收单个信道。

公开(公告)号：US20160128136A1

公开(公告)日：2016-05-05

申请号：US14929465

申请日：2015-11-02

Applicant: MaxLinear, Inc.

Inventor： Anand Anandakumar ,  Sheng Ye ,  Stephane Laurent-Michel ,  Glenn Chang ,  Raja Pullela ,  Vamsi Paidi

IPC: H04W88/08

CPC classification number: H04L27/0014 ,  H04L2027/0067

Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.

Abstract translation: 一种系统包括具有第一谐振电路，相位误差确定电路和相位误差补偿电路的微波回程室外单元。 第一谐振电路可操作以产生第一信号，其特征在于第一量相位噪声和第一量度的温度稳定性。 相位误差确定电路可操作以产生指示第一信号和第二信号之间的相位误差的相位误差信号，其中第二信号的特征在于大于第一相位噪声量的第二相位噪声量， 并且第二信号的特征在于小于第一温度不稳定性的第二量的温度不稳定性。 相位误差补偿电路可操作以基于相位误差信号调整数据信号的相位，导致相位补偿信号的调整。

公开(公告)号：US09246718B2

公开(公告)日：2016-01-26

申请号：US14602837

申请日：2015-01-22

Applicant: MaxLinear, Inc.

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar

IPC: H04L25/03

CPC classification number: H04L25/03184 ,  H04B1/16

Abstract: An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.

Abstract translation: 电子接收机可以基于接收到的符号序列并基于接收符号序列的m符号延迟版本来生成差分检测序列，其中m是大于1的整数。特定的差分检测序列可以是 特定接收符号序列的逐个元素乘法和特定接收符号序列的m符号延迟版本的共轭。 接收机可以基于差分检测序列并且基于从该组可能发送的符号序列生成的一组差分符号序列来计算差分决策度量。 接收机可以产生关于一组可能的传输符号序列中的哪一个导致接收到的符号序列的决定，其中该决定基于差分决策度量和可能发送的符号序列的集合。

公开(公告)号：US09232262B2

公开(公告)日：2016-01-05

申请号：US14557282

申请日：2014-12-01

Applicant: Maxlinear, Inc.

Inventor： Anand Anandakumar ,  Sheng Ye ,  Curtis Ling

IPC: G06F3/00 ,  H03K9/00 ,  H04N21/426 ,  H04N5/44 ,  H04N5/50 ,  H04N21/438 ,  H04N21/443 ,  H04N21/462 ,  H04N21/61

CPC classification number: H04N21/4263 ,  H04N5/44 ,  H04N5/50 ,  H04N21/4383 ,  H04N21/4436 ,  H04N21/4622 ,  H04N21/6143

Abstract: Methods and systems for multi-path video and network channels may comprise a communication device comprising a wideband path (WB) and a narrowband path (NB). A video channel and a network channel may be received in the WB when the device is operating in a first stage. A video channel and a network channel may be received in the WB and the network channel may also be received in the NB when the device is operating in a second stage. The network channel may be received in the NB when the device is operating in a third stage. The reception of the network channel from both the WB and NB may enable a continuous reception of the network channel in a transition between the first and third stages. The WB may be operable to receive a plurality of channels and the NB may be operable to receive a single channel.

Abstract translation: 用于多路径视频和网络信道的方法和系统可以包括包括宽带路径（WB）和窄带路径（NB）的通信设备。 当设备在第一阶段中操作时，可以在WB中接收视频信道和网络信道。 在WB中可以接收视频信道和网络信道，并且当设备在第二阶段中操作时，也可以在NB中接收网络信道。 当设备在第三阶段中操作时，可以在NB中接收网络信道。 来自WB和NB的网络信道的接收可以在第一和第三阶段之间的转变中实现网络信道的连续接收。 WB可以用于接收多个信道，并且NB可以用于接收单个信道。

公开(公告)号：US20150319026A1

公开(公告)日：2015-11-05

申请号：US14697569

申请日：2015-04-27

Applicant: MaxLinear, Inc.

Inventor： Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

IPC: H04L27/26 ,  H04L1/00

CPC classification number: H04L1/0023 ,  H04L5/0007 ,  H04L7/0016 ,  H04L25/0216 ,  H04L27/265 ,  H04L27/2665 ,  H04L27/2671 ,  H04L27/2695

Abstract: Systems and methods for adjusting timing in a communication system, Such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.

Abstract translation: 描述了用于调整通信系统中的定时的系统和方法，例如OFDM系统。 在一个实现中，产生误差信号以调整可变速率内插器的定时，以便调整FFT定时。 误差信号可以基于在通道的脉冲响应的估计中检测到有效峰值，其中峰值位置在随后的符号上被跟踪，并且响应于峰值的变化来调整系统时序。

公开(公告)号：US20150222466A1

公开(公告)日：2015-08-06

申请号：US14687234

申请日：2015-04-15

Applicant: MaxLinear, Inc.

Inventor： Mingrui Zhu ,  Arun Kedambadi ,  Seung Chul Hong ,  Anand Anandakumar

IPC: H04L27/26

CPC classification number: H04L27/2605 ,  H04L25/0216 ,  H04L25/0222 ,  H04L25/0226 ,  H04L27/2607 ,  H04L27/2647 ,  H04L27/2655

Abstract: Methods and systems are provided for adaptive guard interval (GI) combining. When a signal carrying at least one symbol that is preceded by a guard interval that comprises a portion of the symbol is received, a portion of the guard interval that is free from inter-symbol interference (ISI) may be determined, and only a part of the ISI-free portion of the guard interval may be extracted. The part of the ISI-free portion of the guard interval may be selected based on timing adjustment, relative to start of the symbol, that is applied to a function used in extracting the symbol. The extracted part of the ISI-free portion of the guard interval may then be combined with a corresponding portion of the symbol. The extracting and/or combining may be performed after a determination that a delay spread is smaller than a predetermined channel delay.

Abstract translation: 为自适应保护间隔（GI）组合提供了方法和系统。 当接收到携带包含符号部分的保护间隔之前的至少一个符号的信号时，可以确定没有符号间干扰（ISI）的保护间隔的一部分，并且仅确定部分 可以提取保护间隔的无ISI部分。 保护间隔的无ISI部分的部分可以基于适用于提取符号所使用的功能的相对于符号开始的定时调整来选择。 然后可以将保护间隔的无ISI部分的提取部分与符号的相应部分组合。 在确定延迟扩展小于预定信道延迟之后，可以执行提取和/或组合。

公开(公告)号：US20150135237A1

公开(公告)日：2015-05-14

申请号：US14557282

申请日：2014-12-01

Applicant: Maxlinear, Inc.

Inventor： Anand Anandakumar ,  Sheng Ye ,  Curtis Ling

IPC: H04N21/426 ,  H04N21/61 ,  H04N21/462

CPC classification number: H04N21/4263 ,  H04N5/44 ,  H04N5/50 ,  H04N21/4383 ,  H04N21/4436 ,  H04N21/4622 ,  H04N21/6143

Abstract: Methods and systems for multi-path video and network channels may comprise a communication device comprising a wideband path (WB) and a narrowband path (NB). A video channel and a network channel may be received in the WB when the device is operating in a first stage. A video channel and a network channel may be received in the WB and the network channel may also be received in the NB when the device is operating in a second stage. The network channel may be received in the NB when the device is operating in a third stage. The reception of the network channel from both the WB and NB may enable a continuous reception of the network channel in a transition between the first and third stages. The WB may be operable to receive a plurality of channels and the NB may be operable to receive a single channel.

Abstract translation: 用于多路径视频和网络信道的方法和系统可以包括包括宽带路径（WB）和窄带路径（NB）的通信设备。 当设备在第一阶段中操作时，可以在WB中接收视频信道和网络信道。 在WB中可以接收视频信道和网络信道，并且当设备在第二阶段中操作时，也可以在NB中接收网络信道。 当设备在第三阶段中操作时，可以在NB中接收网络信道。 来自WB和NB的网络信道的接收可以在第一和第三阶段之间的转变中实现网络信道的连续接收。 WB可以用于接收多个信道，并且NB可以用于接收单个信道。

公开(公告)号：US09020054B2

公开(公告)日：2015-04-28

申请号：US14040830

申请日：2013-09-30

Applicant: MaxLinear, Inc.

Inventor： Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

IPC: H04L27/28 ,  H04L7/00 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L1/0023 ,  H04L5/0007 ,  H04L7/0016 ,  H04L25/0216 ,  H04L27/265 ,  H04L27/2665 ,  H04L27/2671 ,  H04L27/2695

Abstract: Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.

Abstract translation: 描述了用于调整诸如OFDM系统的通信系统中的定时的系统和方法。 在一个实现中，产生误差信号以调整可变速率内插器的定时，以便调整FFT定时。 误差信号可以基于在通道的脉冲响应的估计中检测到有效峰值，其中峰值位置在随后的符号上被跟踪，并且响应于峰值的变化来调整系统时序。

公开(公告)号：US20140050288A1

公开(公告)日：2014-02-20

申请号：US14040830

申请日：2013-09-30

Applicant: MaxLinear, Inc.

Inventor： Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

IPC: H04L7/00

CPC classification number: H04L1/0023 ,  H04L5/0007 ,  H04L7/0016 ,  H04L25/0216 ,  H04L27/265 ,  H04L27/2665 ,  H04L27/2671 ,  H04L27/2695

Abstract: Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.

Abstract translation: 描述了用于调整诸如OFDM系统的通信系统中的定时的系统和方法。 在一个实现中，产生误差信号以调整可变速率内插器的定时，以便调整FFT定时。 误差信号可以基于在通道的脉冲响应的估计中检测到有效峰值，其中峰值位置在随后的符号上被跟踪，并且响应于峰值的变化来调整系统时序。

公开(公告)号：US20230412276A1

公开(公告)日：2023-12-21

申请号：US18358912

申请日：2023-07-25

Applicant: Maxlinear, Inc.

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar

IPC: H04B10/564

CPC classification number: H04B10/564

Abstract: A calibration system comprises control circuitry and waveform capture circuitry. The control circuitry selects a first calibration waveform for input to a digital predistortion circuit of a transmitter. The capture circuitry captures a first waveform output by the transmitter in response to the first calibration waveform. The control circuitry compares the first calibration waveform to the captured first waveform. The control circuitry selects a first one of a plurality of mapping circuit configurations based on the result of the comparison, wherein the mapping circuit is configured to map outputs of a plurality of delay circuits among inputs of a plurality of filter taps. The control circuitry stores the one of the mapping circuit configurations in nonvolatile memory associated with the transmitter.