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    MULTI-CHANNEL TIME-DIVISION MULTIPLEXING ACCESS METHODS AND SYSTEMS
    21.
    发明公开
    MULTI-CHANNEL TIME-DIVISION MULTIPLEXING ACCESS METHODS AND SYSTEMS 审中-公开

    公开(公告)号：US20230217423A1

    公开(公告)日：2023-07-06

    申请号：US18177263

    申请日：2023-03-02

    Applicant: TrellisWare Technologies, Inc.

    Inventor： Hua Zhu ,  Cenk Köse

    IPC: H04W72/0446 ,  H04J3/02

    CPC classification number: H04W72/0446 ,  H04J3/02

    Abstract: Devices, systems and methods for high-utilization low-latency multi-channel time-division multiplexing access (TDMA) are described. One example method for wireless communication includes performing, in a first time interval of a time-division multiple access (TDMA) slot, a transmission of a first data unit over a first logical channel of the plurality of logical channels, refraining from transmitting, subsequent to a completion of the transmission of the first data unit, for a second time interval immediately after the first time interval, and performing (N−1) transmissions in (N−1) time intervals for each data unit of (N−1) subsequent data units in the TDMA slot, such that a transmission of an nth data unit of the (N−1) subsequent data units is performed over an nth logical channel of the plurality of logical channels.

    NETWORK-ENABLED CONNECTIVITY FOR DISADVANTAGED COMMUNICATION LINKS
    24.
    发明申请
    NETWORK-ENABLED CONNECTIVITY FOR DISADVANTAGED COMMUNICATION LINKS 有权

    公开(公告)号：US20210144732A1

    公开(公告)日：2021-05-13

    申请号：US16680157

    申请日：2019-11-11

    Applicant: TrellisWare Technologies, Inc.

    Inventor： Cenk Köse

    IPC: H04W72/12 ,  H04W72/04 ,  H04W76/10 ,  H04L1/00 ,  H04W72/08 ,  H04L27/26 ,  H04L27/00 ,  H04B17/309

    Abstract: Devices, systems and methods for providing network-enabled connectivity for disadvantaged communication links in wireless networks are described. One example method for enabling connectivity over a disadvantaged link includes receiving, by a first node of a plurality of nodes from a source node in the first frequency band in a first timeslot, a first signal comprising a message, receiving, by the first node from at least a second node in a second frequency band in a second timeslot, a second signal that is used to generate a first reliability metric corresponding to the message, and performing, based on a plurality of reliability metrics corresponding to the message and the first reliability metric, a processing operation on the message, the first frequency band being non-overlapping with the second frequency band, and a duration of the first timeslot being greater than a duration of the second timeslot.

    Methods and systems for estimation and mitigation of swept-tone interferers
    26.
    发明授权
    Methods and systems for estimation and mitigation of swept-tone interferers 有权
    用于估计和减轻扫频调制干扰的方法和系统

    公开(公告)号：US09543994B1

    公开(公告)日：2017-01-10

    申请号：US15053966

    申请日：2016-02-25

    Applicant: TrellisWare Technologies, Inc.

    Inventor： Cenk Kose ,  Keith M. Chugg

    IPC: H04B1/7097 ,  H04B1/10

    CPC classification number: H04B1/10

    Abstract: The estimation and mitigation of swept-tone interferers includes receiving a composite signal comprising a signal of interest and a swept-tone interferer over an observation bandwidth. The estimation of the interfering signal may be based on modeling the interferer over the observation bandwidth as a magnitude periodic signal comprising non-overlapping, contiguous epochs, where each epoch may comprise a common pulse shape and a distinct phase rotation. The period of the magnitude-periodic signal may be initially determined, and the common pulse shape and each of the distinct phase rotations may then be estimated. These estimates may be used to reconstruct an estimate of the swept-tone interferer, which may be subtracted from the composite signal to generate an interference-mitigated signal of interest.

    Abstract translation: 扫频调制干扰源的估计和减轻包括在观测带宽上接收包括感兴趣信号和扫频调制干扰信号的复合信号。 干扰信号的估计可以基于将观测带宽上的干扰源建模为包括非重叠的连续历元的幅度周期信号，其中每个历元可以包括公共脉冲形状和明显的相位旋转。 可以初始确定幅度周期信号的周期，然后可以估计公共脉冲形状和每个不同的相位旋转。 可以使用这些估计来重建扫频调制干扰源的估计，其可以从复合信号中减去以产生感兴趣的干扰减轻信号。

    METHODS AND SYSTEMS FOR INTERFERENCE ESTIMATION VIA QUANTIZATION IN SPREAD-SPECTRUM SYSTEMS
    27.
    发明申请
    METHODS AND SYSTEMS FOR INTERFERENCE ESTIMATION VIA QUANTIZATION IN SPREAD-SPECTRUM SYSTEMS 有权
    用于干扰估计的方法和系统通过扩频系统中的量化

    公开(公告)号：US20160226554A1

    公开(公告)日：2016-08-04

    申请号：US14610553

    申请日：2015-01-30

    Applicant: TrellisWare Technologies, Inc.

    Inventor： Keith M. Chugg ,  Cenk Kose

    IPC: H04B1/71 ,  H04B1/10

    CPC classification number: H04B1/7101 ,  H04B1/1036 ,  H04B2001/1063 ,  H04B2201/70706

    Abstract: A method for interference estimation and mitigation includes receiving a high-resolution digital signal. The high-resolution digital signal comprises a signal of interest and an interfering signal. An estimate of the interfering signal is generated using a quantizer. The signal of interest is in a quantization noise of the quantizer. An interference-mitigated signal of interest is generated based on a difference of the estimate of the interfering signal and the high-resolution digital signal.

    Abstract translation: 一种用于干扰估计和减轻的方法包括接收高分辨率数字信号。 高分辨率数字信号包括感兴趣的信号和干扰信号。 使用量化器产生干扰信号的估计。 感兴趣的信号处于量化器的量化噪声中。 基于干扰信号和高分辨率数字信号的估计的差异来产生感兴趣的干扰减轻信号。

    JOINT ANALOG AND DIGITAL INTERFERENCE CANCELLATION IN WIRELESS SYSTEMS
    28.
    发明申请
    JOINT ANALOG AND DIGITAL INTERFERENCE CANCELLATION IN WIRELESS SYSTEMS 有权
    无线系统中的联合模拟和数字干扰消除

    公开(公告)号：US20150270865A1

    公开(公告)日：2015-09-24

    申请号：US14219938

    申请日：2014-03-19

    Applicant: TrellisWare Technologies, Inc.

    Inventor： Andreas Polydoros ,  Mark Johnson ,  Thomas R. Halford ,  Michael P. Fitz ,  Scott W. Enserink

    IPC: H04B1/62 ,  H04B1/10

    CPC classification number: H04B1/62 ,  H04B1/1027 ,  H04L5/1461

    Abstract: An apparatus for joint analog and digital interference cancellation includes a receiver configured to receive an analog reference interfering signal on a reference path, and a sum of an analog interference signal and an analog signal of interest on an antenna path. An analog interference canceller may be configured to produce an analog partially interference-cancelled signal using the analog reference interfering signal and the sum of the analog interference signal and the analog signal of interest. A first analog-to-digital converter may be configured to digitize the analog reference interfering signal to produce a digital reference interfering signal. A second analog-to-digital converter may be configured to digitize the analog partially interference-cancelled signal to produce a digital partially interference-cancelled signal. A digital interference canceller may be configured to produce an interference-cancelled signal using the digital reference interfering signal and the digital partially interference-cancelled signal.

    Abstract translation: 用于联合模拟和数字干扰消除的装置包括被配置为在参考路径上接收模拟参考干扰信号的接收机，以及天线路径上的模拟干扰信号和感兴趣的模拟信号之和。 模拟干扰消除器可以被配置为使用模拟参考干扰信号和模拟干扰信号和感兴趣的模拟信号的和产生模拟部分干扰消除信号。 第一模数转换器可以被配置为数字化模拟参考干扰信号以产生数字参考干扰信号。 第二模数转换器可以被配置为数字化模拟部分干扰消除信号以产生数字部分干扰消除信号。 数字干扰消除器可以被配置为使用数字参考干扰信号和数字部分干扰消除信号来产生干扰消除信号。

    CHANNEL PROFILING FOR FREQUENCY-HOPPING DIRECT-SEQUENCE SPREAD SPECTRUM SYSTEMS
    30.
    发明申请
    CHANNEL PROFILING FOR FREQUENCY-HOPPING DIRECT-SEQUENCE SPREAD SPECTRUM SYSTEMS 有权

    公开(公告)号：US20250070819A1

    公开(公告)日：2025-02-27

    申请号：US18813417

    申请日：2024-08-23

    Applicant: TrellisWare Technologies, Inc.

    Inventor： Andreas Polydoros ,  Cenk Köse

    IPC: H04B1/692 ,  H04B1/707 ,  H04B1/713

    Abstract: Methods and systems for low-complexity channel profiling in frequency-hopped (FH) direct-sequence spread spectrum (DSSS) wireless communication systems are described. An example system includes a receiver configured to receive, over a channel, a FH DSSS signal associated with multiple frequency hops, and a processor configured to perform, using a first subset of the multiple frequency hops, a timing acquisition operation using a full correlative processing operation. The receiver is then configured to perform, subsequent to the timing acquisition operation and using a second subset of the multiple frequency hops, a predominant delay estimation operation, where estimating predominant channel delays excludes using the full correlative processing operation, and finally compute, based on an output of the predominant delay estimation operation, a channel estimate comprising an estimate of each of a number of channel taps that represent the channel, and where each channel tap estimate comprises a gain, a phase, and a delay.

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