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    Wireless full-duplex system and method using sideband test signals
    4.
    发明授权
    Wireless full-duplex system and method using sideband test signals 有权

    公开(公告)号：US10374781B2

    公开(公告)日：2019-08-06

    申请号：US16045402

    申请日：2018-07-25

    申请人： Amir Keyvan Khandani

    发明人： Amir Keyvan Khandani

    IPC分类号： H04L5/14 ,  H04L1/00 ,  H04B1/50 ,  H04B1/525 ,  H04B17/00 ,  H04B1/56 ,  H04B7/0413 ,  H04L5/00

    摘要： A full-duplex transceiver is provided with componentry and methods for cancellation of nonlinear self-interference signals. The transceiver is capable of receiving an incoming radio-frequency signal that includes both a desired radio-frequency signal component and a self-interference component caused by the transceiver's own radio-frequency transmission. The transceiver demodulates the incoming radio-frequency signal to generate a first demodulated signal. The transceiver combines an analog corrective signal with the first demodulated signal to generate a second demodulated signal with reduced self-interference. The transceiver processes the first and second demodulated signals to determine a desired incoming baseband signal and to determine nonlinear components of the self-interference signal, such as nonlinearities introduced by the transceiver's power amplifier.

    SYSTEMS AND METHODS FOR COMMUNICATION RESOURCE USAGE CONTROL
    5.
    发明申请
    SYSTEMS AND METHODS FOR COMMUNICATION RESOURCE USAGE CONTROL 审中-公开

    公开(公告)号：US20190166624A1

    公开(公告)日：2019-05-30

    申请号：US15824352

    申请日：2017-11-28

    申请人： Shayan Mohajer Hamidi ,  Sanjeewa Herath ,  Alireza Bayesteh ,  Amir Keyvan Khandani

    发明人： Shayan Mohajer Hamidi ,  Sanjeewa Herath ,  Alireza Bayesteh ,  Amir Keyvan Khandani

    IPC分类号： H04W74/08 ,  H04W72/04 ,  H04B7/04 ,  H04B1/713 ,  H04W28/16

    摘要： A diversity channel for data transmission is obtained by communication equipment. The diversity channel indicates communication resources that are assigned to the communication equipment, and is from a set of diversity channels that are consistent with codewords of a linear code. The communication equipment also transmits a data transmission using the communication resources indicated by the diversity channel. The diversity channel assignment could be determined, by network equipment for example, and information that identifies the diversity channel could be transmitting to the communication equipment. Such information could be explicitly or implicitly signaled to the communication equipment. A set of diversity channels could be generated directly as codewords of one or more linear codes, or additional operations could be applied to such codewords, and possibly other information that is not generated using a code, to provide a diversity channel set.

    METHODS FOR SECURE DATA STORAGE
    6.
    发明申请
    METHODS FOR SECURE DATA STORAGE 审中-公开

    公开(公告)号：US20190102569A1

    公开(公告)日：2019-04-04

    申请号：US16152284

    申请日：2018-10-04

    申请人： Amir Keyvan Khandani

    发明人： Amir Keyvan Khandani

    IPC分类号： G06F21/62 ,  H04L9/08 ,  H04L29/06

    摘要： Embodiments include a method for secure data storage including constructing an encryption key from a plurality of key elements, the constructing including distributing the plurality of key elements to a plurality of key maintenance entities, each of the plurality of key maintenance entities employing a plurality of independent safe guards for their respective key elements of the plurality of key elements; and requiring access to the plurality of key elements to construct the encryption key. The method includes receiving a subset of the plurality of key elements via a twice-encrypted communications channel; and regenerating the encryption key at the client node; and after encrypting data, deleting the subset of the plurality of key elements received over the twice-encrypted communications channel, retaining any of the plurality of key elements previously stored at the client node.

    Full duplex wireless transmission with channel phase-based encryption
    7.
    发明授权
    Full duplex wireless transmission with channel phase-based encryption 有权

    公开(公告)号：US10211965B2

    公开(公告)日：2019-02-19

    申请号：US15866218

    申请日：2018-01-09

    申请人： Amir Keyvan Khandani

    发明人： Amir Keyvan Khandani

    IPC分类号： H04L5/14 ,  H04W16/14 ,  H04B7/0413 ,  H04W12/04 ,  H04B7/0456 ,  H04B7/026 ,  H04B1/12 ,  H04B1/525 ,  H04L1/18 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/10 ,  H04L1/00

    摘要： An apparatus includes a first transceiver, at least two antennas coupled to the first transceiver to exchange one or more keys and phase data with a second transceiver via a plurality of rounds of phase data exchange, each round including: a first pilot signal sent from a first of the antennas of the first transceiver to the second transceiver, a second pilot signal received from the second transceiver, the second pilot signal modulated using a measured first phase of the first pilot signal, a third pilot signal received from the second transceiver; a fourth pilot signal sent from a second of the antennas of the first transceiver to the second transceiver, the fourth pilot signal modulated using a measured second phase of the third pilot signal, and wherein between the plurality of rounds of phase exchange, the first transceiver perturbs a radio frequency (RF) environment surrounding the at least two antennas.

    INSTANTANEOUS BEAMFORMING EXPLOITING USER PHYSICAL SIGNATURES
    8.
    发明申请
    INSTANTANEOUS BEAMFORMING EXPLOITING USER PHYSICAL SIGNATURES 审中-公开

    公开(公告)号：US20170317724A1

    公开(公告)日：2017-11-02

    申请号：US15585128

    申请日：2017-05-02

    申请人： Amir Keyvan Khandani

    发明人： Amir Keyvan Khandani

    IPC分类号： H04B7/04 ,  H01F5/00 ,  H01F17/00 ,  H03M1/74

    摘要： A communication system where a central node (base-station or access point) communicates with multiple clients in its neighbourhood using transparent immediate beam-forming. Resource allocation and channel access is such that the central node does not necessarily know when each client starts its transmission. Receive beam-forming in such a system is not possible, as beam-forming coefficients for each client should be selected according to the particular channel realization from that client to the central node. Each client is detected early in its transmission cycle, based on either a signature that is part of the physical characteristics unique to that client, or based on a signature that is intentionally inserted in the clients' signal, and accordingly adjusts its beam-forming coefficients.

    Wireless Full-Duplex System and Method with Self-Interference Sampling
    9.
    发明申请
    Wireless Full-Duplex System and Method with Self-Interference Sampling 审中-公开
    无干扰全双工系统和自干扰采样方法

    公开(公告)号：US20150156003A1

    公开(公告)日：2015-06-04

    申请号：US14301076

    申请日：2014-06-10

    申请人： Amir Keyvan Khandani

    发明人： Amir Keyvan Khandani

    IPC分类号： H04L5/14 ,  H04L1/00

    CPC分类号： H04L5/143 ,  H04B1/525

    摘要： A full-duplex transceiver is provided with componentry and methods for cancellation of nonlinear self-interference signals. The transceiver is capable of receiving an incoming radio-frequency signal that includes both a desired radio-frequency signal component and a self-interference component caused by the transceiver's own radio-frequency transmission. The transceiver demodulates the incoming radio-frequency signal to generate a first demodulated signal. The transceiver combines an analog corrective signal with the first demodulated signal to generate a second demodulated signal with reduced self-interference. The transceiver processes the first and second demodulated signals to determine a desired incoming baseband signal and to determine nonlinear components of the self-interference signal, such as nonlinearities introduced by the transceiver's power amplifier.

    摘要翻译： 全双工收发器具有用于消除非线性自干扰信号的组件和方法。 收发器能够接收包括期望的射频信号分量和由收发器自己的射频传输引起的自干扰分量的输入射频信号。 收发器解调输入的射频信号以产生第一解调信号。 收发器将模拟校正信号与第一解调信号组合，以产生具有减小的自干扰的第二解调信号。 收发器处理第一和第二解调信号以确定期望的输入基带信号并且确定自干扰信号的非线性分量，例如由收发机的功率放大器引入的非线性。

    SOFT DECODING OF DATA IN A COHERENT OPTICAL RECEIVER
    10.
    发明申请
    SOFT DECODING OF DATA IN A COHERENT OPTICAL RECEIVER 有权
    在一个相干光接收器中数据的软解码

    公开(公告)号：US20140212149A1

    公开(公告)日：2014-07-31

    申请号：US14227084

    申请日：2014-03-27

    申请人： Amir Keyvan KHANDANI ,  Han SUN ,  Kim B. ROBERTS

    发明人： Amir Keyvan KHANDANI ,  Han SUN ,  Kim B. ROBERTS

    IPC分类号： H04B10/2507

    CPC分类号： H04B10/2572 ,  H04B10/60 ,  H04B10/611 ,  H04B10/613 ,  H04B10/6161 ,  H04B10/6162 ,  H04L25/067 ,  H04L2025/03617

    摘要： In a coherent optical receiver receiving a polarization multiplexed optical signal through an optical communications network, a method of compensating noise due to polarization dependent loss (PDL). A Least Mean Squares (LMS) compensation block processes sample streams of the received optical signal to generate symbol estimates of symbols modulated onto each transmitted polarization of the optical signal. A decorrelation block de-correlates noise in the respective symbol estimates of each transmitted polarization and generating a set of decorrelated coordinate signals. A maximum likelihood estimator soft decodes the de-correlated coordinate signals generated by the decorrelation block.

    摘要翻译： 在通过光通信网络接收偏振复用光信号的相干光接收机中，由偏振相关损耗（PDL）补偿噪声的方法。 最小均方（LMS）补偿块处理所接收的光信号的采样流，以生成调制到光信号的每个透射偏振上的符号的码元估计。 解相关块将各个发射的偏振的相应符号估计中的噪声去相关，并产生一组去相关的坐标信号。 最大似然估计器对解相关块产生的去相关坐标信号进行软解码。