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    SPREAD SPECTRUM COMMUNICATION, AND ASSOCIATED DEVICES, SYSTEMS, AND METHODS
    3.
    发明申请
    SPREAD SPECTRUM COMMUNICATION, AND ASSOCIATED DEVICES, SYSTEMS, AND METHODS 有权

    公开(公告)号：US20220116070A1

    公开(公告)日：2022-04-14

    申请号：US17645220

    申请日：2021-12-20

    Applicant: Battelle Energy Alliance, LLC

    Inventor： Arslan J. Majid ,  Hussein Moradi ,  Behrouz Farhang-Boroujeny

    IPC: H04B1/7097

    Abstract: Various embodiments relate to spread spectrum communication. A communication system may include a base station and a user equipment. The base station may be configured to: add a cyclic prefix (CP) to each block of a number of blocks of a first direct sequence spread spectrum (DSSS) signal to generate a first cyclic prefix-direct sequence spread spectrum (CP-DSSS) signal; add artificial noise to the first CP-DSSS signal; and transmit, via a channel, the first CP-DSSS signal. The user equipment configured to receive the first CP-DSSS signal. Associated methods and communications systems are also disclosed.

    Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems
    5.
    发明授权
    Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems 有权
    在扩频系统中自生成容错密钥的方法和装置

    公开(公告)号：US09215587B2

    公开(公告)日：2015-12-15

    申请号：US14163723

    申请日：2014-01-24

    Applicant: Battelle Energy Alliance, LLC

    Inventor： Hussein Moradi ,  Behrouz Farhang ,  Vijayarangam Subramanian

    IPC: H04B1/00 ,  H04W12/04 ,  H04B1/709 ,  H04B1/707 ,  H04B1/7093 ,  H04L27/26 ,  H04L1/04 ,  H04L9/08 ,  H04B1/69

    CPC classification number: H04B1/7093 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B1/71 ,  H04B2001/70935 ,  H04J11/0023 ,  H04K3/25 ,  H04K3/827 ,  H04L1/04 ,  H04L5/0021 ,  H04L9/0816 ,  H04L9/0875 ,  H04L27/264 ,  H04L2209/24 ,  H04L2209/80 ,  H04W12/04

    Abstract: Self-generating fault-tolerant keys for use in spread-spectrum systems are disclosed. At a communication device, beacon signals are received from another communication device and impulse responses are determined from the beacon signals. The impulse responses are circularly shifted to place a largest sample at a predefined position. The impulse responses are converted to a set of frequency responses in a frequency domain. The frequency responses are shuffled with a predetermined shuffle scheme to develop a set of shuffled frequency responses. A set of phase differences is determined as a difference between an angle of the frequency response and an angle of the shuffled frequency response at each element of the corresponding sets. Each phase difference is quantized to develop a set of secret-key quantized phases and a set of spreading codes is developed wherein each spreading code includes a corresponding phase of the set of secret-key quantized phases.

    Abstract translation: 公开了用于扩频系统中的自发容错密钥。 在通信设备处，从另一通信设备接收信标信号，并从信标信号确定脉冲响应。 脉冲响应被循环移位，以将最大的样本放置在预定位置。 脉冲响应被转换成频域中的一组频率响应。 频率响应用预定的混洗方案进行混洗以形成一组混洗频率响应。 一组相位差被确定为频率响应的角度和相应组的每个元素处的混洗频率响应的角度之间的差。 量化每个相位差以形成一组秘密密钥量化相位，并且开发一组扩展码，其中每个扩展码包括密钥量化相位集合的相应相位。

    Methods and apparatuses using filter banks for multi-carrier spread spectrum signals
    7.
    发明授权
    Methods and apparatuses using filter banks for multi-carrier spread spectrum signals 有权
    使用滤波器组的多载波扩频信号的方法和装置

    公开(公告)号：US09559748B2

    公开(公告)日：2017-01-31

    申请号：US15061157

    申请日：2016-03-04

    Applicant: BATTELLE ENERGY ALLIANCE, LLC.

    Inventor： Hussein Moradi ,  Behrouz Farhang ,  Carl A Kutsche

    IPC: H04B1/00 ,  H04B1/7093 ,  H04B1/709 ,  H04B1/707 ,  H04L27/26 ,  H04L1/04 ,  H04L9/08 ,  H04W12/04 ,  H04L5/00 ,  H04B1/71 ,  H04B1/69

    CPC classification number: H04B1/7093 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B1/71 ,  H04B2001/70935 ,  H04J11/0023 ,  H04K3/25 ,  H04K3/827 ,  H04L1/04 ,  H04L5/0021 ,  H04L9/0816 ,  H04L9/0875 ,  H04L27/264 ,  H04L2209/24 ,  H04L2209/80 ,  H04W12/04

    Abstract: A transmitter includes a synthesis filter bank to spread a data symbol to a plurality of frequencies by encoding the data symbol on each frequency, apply a common pulse-shaping filter, and apply gains to the frequencies such that a power level of each frequency is less than a noise level of other communication signals within the spectrum. Each frequency is modulated onto a different evenly spaced subcarrier. A demodulator in a receiver converts a radio frequency input to a spread-spectrum signal in a baseband. A matched filter filters the spread-spectrum signal with a common filter having characteristics matched to the synthesis filter bank in the transmitter by filtering each frequency to generate a sequence of narrow pulses. A carrier recovery unit generates control signals responsive to the sequence of narrow pulses suitable for generating a phase-locked loop between the demodulator, the matched filter, and the carrier recovery unit.

    Abstract translation: 发射机包括合成滤波器组，用于通过对每个频率上的数据符号进行编码来将数据符号扩展到多个频率，应用公共脉冲整形滤波器，并对频率施加增益，使得每个频率的功率电平较小 比频谱内其他通信信号的噪声水平高。 每个频率被调制到不同的均匀间隔子载波上。 接收机中的解调器将射频输入转换为基带中的扩频信号。 匹配滤波器利用具有与发射机中的合成滤波器组匹配的特性的公共滤波器对扩频信号进行滤波以对每个频率进行滤波以产生窄脉冲序列。 载波恢复单元响应于适于在解调器，匹配滤波器和载波恢复单元之间产生锁相环的窄脉冲序列来产生响应的序列。

    Methods and apparatuses using filter banks for multi-carrier spread spectrum signals
    8.
    发明授权
    Methods and apparatuses using filter banks for multi-carrier spread spectrum signals 有权
    使用滤波器组的多载波扩频信号的方法和装置

    公开(公告)号：US09369866B2

    公开(公告)日：2016-06-14

    申请号：US14498035

    申请日：2014-09-26

    Applicant: BATTELLE ENERGY ALLIANCE, LLC

    Inventor： Hussein Moradi ,  Behrouz Farhang ,  Carl A. Kutsche

    IPC: H04B1/00 ,  H04W12/04 ,  H04B1/709 ,  H04B1/707 ,  H04B1/7093 ,  H04L27/26 ,  H04L1/04 ,  H04L9/08 ,  H04L5/00 ,  H04B1/69

    CPC classification number: H04B1/7093 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B1/71 ,  H04B2001/70935 ,  H04J11/0023 ,  H04K3/25 ,  H04K3/827 ,  H04L1/04 ,  H04L5/0021 ,  H04L9/0816 ,  H04L9/0875 ,  H04L27/264 ,  H04L2209/24 ,  H04L2209/80 ,  H04W12/04

    Abstract: A transmitter includes a synthesis filter bank to spread a data symbol to a plurality of frequencies by encoding the data symbol on each frequency, apply a common pulse-shaping filter, and apply gains to the frequencies such that a power level of each frequency is less than a noise level of other communication signals within the spectrum. Each frequency is modulated onto a different evenly spaced subcarrier. A demodulator in a receiver converts a radio frequency input to a spread-spectrum signal in a baseband. A matched filter filters the spread-spectrum signal with a common filter having characteristics matched to the synthesis filter bank in the transmitter by filtering each frequency to generate a sequence of narrow pulses. A carrier recovery unit generates control signals responsive to the sequence of narrow pulses suitable for generating a phase-locked loop between the demodulator, the matched filter, and the carrier recovery unit.

    Abstract translation: 发射机包括合成滤波器组，用于通过对每个频率上的数据符号进行编码来将数据符号扩展到多个频率，应用公共脉冲整形滤波器，并对频率施加增益，使得每个频率的功率电平较小 比频谱内其他通信信号的噪声水平高。 每个频率被调制到不同的均匀间隔子载波上。 接收机中的解调器将射频输入转换为基带中的扩频信号。 匹配滤波器利用具有与发射机中的合成滤波器组匹配的特性的公共滤波器对扩频信号进行滤波以对每个频率进行滤波以产生窄脉冲序列。 载波恢复单元响应于适于在解调器，匹配滤波器和载波恢复单元之间产生锁相环的窄脉冲序列来产生响应的序列。

    Methods and apparatuses using filter banks for multi-carrier spread-spectrum signals
    9.
    发明授权
    Methods and apparatuses using filter banks for multi-carrier spread-spectrum signals 有权
    使用滤波器组的多载波扩频信号的方法和装置

    公开(公告)号：US08861571B2

    公开(公告)日：2014-10-14

    申请号：US14051274

    申请日：2013-10-10

    Applicant: Battelle Energy Alliance, LLC

    Inventor： Hussein Moradi ,  Behrouz Farhang ,  Carl A. Kutsche

    IPC: H04B1/00 ,  H04B1/709 ,  H04B1/707 ,  H04B1/7093

    CPC classification number: H04B1/7093 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B1/71 ,  H04B2001/70935 ,  H04J11/0023 ,  H04K3/25 ,  H04K3/827 ,  H04L1/04 ,  H04L5/0021 ,  H04L9/0816 ,  H04L9/0875 ,  H04L27/264 ,  H04L2209/24 ,  H04L2209/80 ,  H04W12/04

    Abstract: A transmitter includes a synthesis filter bank to spread a data symbol to a plurality of frequencies by encoding the data symbol on each frequency, apply a common pulse-shaping filter, and apply gains to the frequencies such that a power level of each frequency is less than a noise level of other communication signals within the spectrum. Each frequency is modulated onto a different evenly spaced subcarrier. A demodulator in a receiver converts a radio frequency input to a spread-spectrum signal in a baseband. A matched filter filters the spread-spectrum signal with a common filter having characteristics matched to the synthesis filter bank in the transmitter by filtering each frequency to generate a sequence of narrow pulses. A carrier recovery unit generates control signals responsive to the sequence of narrow pulses suitable for generating a phase-locked loop between the demodulator, the matched filter, and the carrier recovery unit.

    Abstract translation: 发射机包括合成滤波器组，用于通过对每个频率上的数据符号进行编码来将数据符号扩展到多个频率，应用公共脉冲整形滤波器，并对频率施加增益，使得每个频率的功率电平较小 比频谱内其他通信信号的噪声水平高。 每个频率被调制到不同的均匀间隔子载波上。 接收机中的解调器将射频输入转换为基带中的扩频信号。 匹配滤波器利用具有与发射机中的合成滤波器组匹配的特性的公共滤波器对扩频信号进行滤波以对每个频率进行滤波以产生窄脉冲序列。 载波恢复单元响应于适于在解调器，匹配滤波器和载波恢复单元之间产生锁相环的窄脉冲序列来产生响应的序列。

    Spread spectrum communication, and associated devices, systems, and methods
    10.
    发明授权
    Spread spectrum communication, and associated devices, systems, and methods 有权

    公开(公告)号：US12126374B2

    公开(公告)日：2024-10-22

    申请号：US17645220

    申请日：2021-12-20

    Applicant: Battelle Energy Alliance, LLC

    Inventor： Arslan J. Majid ,  Hussein Moradi ,  Behrouz Farhang

    IPC: H04B1/7097

    CPC classification number: H04B1/7097

    Abstract: Various embodiments relate to spread spectrum communication. A communication system may include a base station and a user equipment. The base station may be configured to: add a cyclic prefix (CP) to each block of a number of blocks of a first direct sequence spread spectrum (DSSS) signal to generate a first cyclic prefix-direct sequence spread spectrum (CP-DSSS) signal; add artificial noise to the first CP-DSSS signal; and transmit, via a channel, the first CP-DSSS signal. The user equipment is configured to receive the first CP-DSSS signal. Associated methods and communications systems are also disclosed.

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