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    EQUALIZATION ADAPTATION SCHEMES FOR HIGH-SPEED LINKS
    1.
    发明申请
    EQUALIZATION ADAPTATION SCHEMES FOR HIGH-SPEED LINKS 有权

    公开(公告)号：US20230109793A1

    公开(公告)日：2023-04-13

    申请号：US17499300

    申请日：2021-10-12

    Applicant: NVIDIA Corporation

    Inventor： Vishnu Balan ,  Mohammad Mobin ,  Akshay Shyam Pavagada Raghavendra ,  Pervez Mirza Aziz

    IPC: H04L7/00 ,  H04L7/06 ,  H04L25/03

    Abstract: A receiving link device includes a receiver (RX) to receive a data signal from a transmitting link device, the receiver including an equalizer to detect RX tap values and a processing device coupled to the receiver, the processing device to perform operations including: programming the receiver with information related to target RX tap values that are associated RX pre-cursors or RX post-cursors; detecting, using the equalizer, that an RX pre-cursor value is greater or less than a target RX tap value; generating, based on the detecting, a tap message including an up or a down command to decrease or increase a corresponding transmitter (TX) pre-cursor value of the transmitting link device; and causing the tap message to be provided to a local transmitter to be transmitted to a remote receiver of the transmitting link device, which causes the transmitting link device to adjust the corresponding TX pre-cursor value.

    Receiver adaptation using stochastic gradient hill climbing with genetic mutation
    2.
    发明授权
    Receiver adaptation using stochastic gradient hill climbing with genetic mutation 有权

    公开(公告)号：US10749720B1

    公开(公告)日：2020-08-18

    申请号：US16419996

    申请日：2019-05-22

    Applicant: NVIDIA CORPORATION

    Inventor： Vishnu Balan ,  Mohammad Mobin ,  Rohit Rathi ,  Dai Dai

    IPC: H04L27/01

    Abstract: A receiver receives communications over a communication channel, which may distort an incoming communication signal. In order to counter this distortion, the frequency response of the receiver is manipulated by adjusting several frequency response parameters. Each frequency response parameter controls at least a portion of the frequency response of the receiver. The optimal values for the frequency response parameters are determined by modifying an initial set of values for the frequency response parameters through one or more of stochastic hill climbing operations until a performance metric associated with the receiver reaches a local maximum. The modified values are displaced through one or more mutation operations. The stochastic hill climbing operations may subsequently be performed on the mutated values to generate the final values for the frequency response parameters.

    Equalization adaptation schemes for high-speed links
    3.
    发明授权
    Equalization adaptation schemes for high-speed links 有权

    公开(公告)号：US11646863B2

    公开(公告)日：2023-05-09

    申请号：US17499300

    申请日：2021-10-12

    Applicant: NVIDIA Corporation

    Inventor： Vishnu Balan ,  Mohammad Mobin ,  Akshay Shyam Pavagada Raghavendra ,  Pervez Mirza Aziz

    IPC: H04B1/10 ,  H04L7/00 ,  H04L25/03 ,  H04L7/06

    CPC classification number: H04L7/0058 ,  H04L7/0079 ,  H04L7/0091 ,  H04L7/06 ,  H04L25/03006 ,  H04L25/03878 ,  H04L2025/03611

    Abstract: A receiving link device includes a receiver (RX) to receive a data signal from a transmitting link device, the receiver including an equalizer to detect RX tap values and a processing device coupled to the receiver, the processing device to perform operations including: programming the receiver with information related to target RX tap values that are associated RX pre-cursors or RX post-cursors; detecting, using the equalizer, that an RX pre-cursor value is greater or less than a target RX tap value; generating, based on the detecting, a tap message including an up or a down command to decrease or increase a corresponding transmitter (TX) pre-cursor value of the transmitting link device; and causing the tap message to be provided to a local transmitter to be transmitted to a remote receiver of the transmitting link device, which causes the transmitting link device to adjust the corresponding TX pre-cursor value.

    Receiver and transmitter adaptation using stochastic gradient hill climbing with genetic mutation
    4.
    发明授权
    Receiver and transmitter adaptation using stochastic gradient hill climbing with genetic mutation 有权

    公开(公告)号：US12034576B2

    公开(公告)日：2024-07-09

    申请号：US17528093

    申请日：2021-11-16

    Applicant: NVIDIA CORPORATION

    Inventor： Vishnu Balan ,  Mohammad Mobin ,  Dai Dai ,  Raanan Ivry ,  Rohit Rathi

    IPC: H04L27/01

    CPC classification number: H04L27/01

    Abstract: A receiver receives communications over a communication channel, which may distort an incoming communication signal. In order to counter this distortion, the frequency response of the receiver is manipulated by adjusting several parameters. Each parameter controls at least a portion of the frequency response of the receiver. The optimal values for the parameters are determined by modifying an initial set of values for the parameters through one or more stochastic hill climbing operations until a performance metric associated with the receiver reaches a local optimum. The modified values are displaced through one or more mutation operations. The stochastic hill climbing operations may subsequently be performed on the mutated values to generate the final values for the parameters.

    FAST CHANNEL EQUALIZATION IN COMMUNICATION CHANNELS USING MACHINE LEARNING TECHNIQUES
    6.
    发明申请
    FAST CHANNEL EQUALIZATION IN COMMUNICATION CHANNELS USING MACHINE LEARNING TECHNIQUES 有权

    公开(公告)号：US20250112806A1

    公开(公告)日：2025-04-03

    申请号：US18376186

    申请日：2023-10-03

    Applicant: NVIDIA Corporation

    Inventor： Mohammad Mobin ,  Vishnu Balan ,  Johan Jacob Mohr ,  Thorkild Franck

    IPC: H04L25/03 ,  H04B17/21 ,  H04B17/391

    Abstract: Disclosed are apparatuses, systems, and techniques for deploying and training machine learning models for fast and efficient equalization of signals transmitted over communication channels. In one embodiment, the techniques include processing, using first model(s), a digital representation of a received (RX), via a communication channel, signal to obtain channel loss metrics representative of a difference between the RX signal and a transmitted (TX) signal. The techniques further include obtaining a first set of equalization (EQ) parameter(s), and iteratively obtaining a second set of EQ parameter(s). The techniques further include configuring, using the second set of the EQ parameters, one or more EQ circuits to equalize at least one of the RX signal, the TX signal, or a channel signal.

    Receiver and transmitter adaptation using stochastic gradient hill climbing with genetic mutation
    7.
    发明授权
    Receiver and transmitter adaptation using stochastic gradient hill climbing with genetic mutation 有权

    公开(公告)号：US11381431B2

    公开(公告)日：2022-07-05

    申请号：US17326032

    申请日：2021-05-20

    Applicant: NVIDIA CORPORATION

    Inventor： Vishnu Balan ,  Mohammad Mobin ,  Dai Dai ,  Raanan Ivry ,  Rohit Rathi

    IPC: H04L27/01

    Abstract: A receiver receives communications over a communication channel, which may distort an incoming communication signal. In order to counter this distortion, the frequency response of the receiver is manipulated by adjusting several frequency response parameters. Each frequency response parameter controls at least a portion of the frequency response of the receiver. The optimal values for the frequency response parameters are determined by modifying an initial set of values for the frequency response parameters through one or more of stochastic hill climbing operations until a performance metric associated with the receiver reaches a local maximum. The modified values are displaced through one or more mutation operations. The stochastic hill climbing operations may subsequently be performed on the mutated values to generate the final values for the frequency response parameters.

    RECEIVER AND TRANSMITTER ADAPTATION USING STOCHASTIC GRADIENT HILL CLIMBING WITH GENETIC MUTATION
    8.
    发明申请
    RECEIVER AND TRANSMITTER ADAPTATION USING STOCHASTIC GRADIENT HILL CLIMBING WITH GENETIC MUTATION 有权

    公开(公告)号：US20210344530A1

    公开(公告)日：2021-11-04

    申请号：US17326032

    申请日：2021-05-20

    Applicant: NVIDIA CORPORATION

    Inventor： Vishnu Balan ,  Mohammad Mobin ,  Rohit RATHI ,  Dai DAI

    IPC: H04L27/01

    Abstract: A receiver receives communications over a communication channel, which may distort an incoming communication signal. In order to counter this distortion, the frequency response of the receiver is manipulated by adjusting several frequency response parameters. Each frequency response parameter controls at least a portion of the frequency response of the receiver. The optimal values for the frequency response parameters are determined by modifying an initial set of values for the frequency response parameters through one or more of stochastic hill climbing operations until a performance metric associated with the receiver reaches a local maximum. The modified values are displaced through one or more mutation operations. The stochastic hill climbing operations may subsequently be performed on the mutated values to generate the final values for the frequency response parameters.

    Techniques for improving high-speed communications in a computing system
    10.
    发明授权
    Techniques for improving high-speed communications in a computing system 有权

    公开(公告)号：US10728062B1

    公开(公告)日：2020-07-28

    申请号：US16287104

    申请日：2019-02-27

    Applicant: Nvidia Corporation

    Inventor： Eric Tyson ,  Mohammad Mobin ,  Vishnu Balan ,  Hitendra Dutt

    IPC: H04L25/03 ,  H04L25/02

    Abstract: In a computing system, various components/devices communicate with each other. For example, a microprocessor may communicate with memory or may communicate with another microprocessor over a link. Various factors such as the frequency and transmission speed of a signal can distort what is being communicated over a link. The problem becomes more pronounced as the transmission speed increases. To address this problem, devices on both ends of a link can cooperate to equalize the link. Equalization involves configuring the transmitting device to alter the signal being transmitted so that certain distortions introduced during transmission are negated by the time the signal arrives at the receiving device. Given that each link can have slightly different characteristics, appropriate equalization parameters need to be ascertained for each link. Introduced herein are improved techniques for performing equalization that are quick yet provide equalization parameters that are stable even in a noisy high-speed link.

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