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    Physically secure digital signal processing for wireless M2M networks
    3.
    发明申请
    Physically secure digital signal processing for wireless M2M networks 有权
    无线M2M网络的物理安全数字信号处理

    公开(公告)号：US20150195670A1

    公开(公告)日：2015-07-09

    申请号：US13999040

    申请日：2014-01-06

    申请人： Brian G. Agee

    发明人： Brian G. Agee

    IPC分类号： H04W4/00 ,  H04B1/7156 ,  H04B1/715 ,  H04B1/7103

    CPC分类号： H04W4/70 ,  H04B1/692 ,  H04B1/7103 ,  H04B1/7156 ,  H04B2001/7154 ,  H04J13/0007

    摘要： A method and apparatus for physically secure communication over machine-to-machine (M2M) networks is claimed, through the use of frequency-hop and random access spread spectrum modulation formats employing using truly random spreading codes and time/frequency hopping and receiver selection strategies at the transmitters in the M2M network, blind signal detection and linear signal separation techniques at the receivers in the M2M network, completely eliminating the ability for an adversary to predict and override M2M transmissions. Additional physical security protocols are also introduced that allow the network to easily detect and identify spoofing transmissions on uplinks and downlinks, and to automatically excise those transmissions as part of the despreading procedure, even if those transmissions are received at a much higher power level than the intended transmissions. Extensions to weakly and strongly macrodiverse networks are also described, which provide additional efficiency and security improvements by exploiting the route diversity of the network.

    摘要翻译： 通过使用使用真正随机扩展码和时间/跳频和接收机选择策略的频率跳跃和随机接入扩展频谱调制格式来要求保护通过机器对机器（M2M）网络进行物理上安全通信的方法和装置 在M2M网络的发射机上，在M2M网络的接收机处的盲信号检测和线性信号分离技术，完全消除了对手预测和覆盖M2M传输的能力。 还引入了额外的物理安全协议，其允许网络容易地检测和识别上行链路和下行链路上的欺骗传输，并且作为解扩过程的一部分自动地消除这些传输，即使这些传输在比 预期传输。 还描述了对弱和强大型宏观多样性网络的扩展，其通过利用网络的路由多样性来提供额外的效率和安全性改进。

    System and Method for Low Density Spreading Modulation Detection
    4.
    发明申请
    System and Method for Low Density Spreading Modulation Detection 有权
    低密度传播调制检测系统与方法

    公开(公告)号：US20140169412A1

    公开(公告)日：2014-06-19

    申请号：US13917319

    申请日：2013-06-13

    申请人： FutureWei Technologies, Inc.

    发明人： Mohammadhadi Baligh ,  Hosein Nikopour ,  Alireza Bayesteh

    IPC分类号： H04B1/709

    CPC分类号： H04B1/709 ,  H04B1/707 ,  H04B1/71052 ,  H04J13/0007

    摘要： In one embodiment, a method for blindly detecting low density spreading (LDS) active signatures including receiving, by a first node from a second node, a signal and decorrelating the signal in accordance with a signature list to obtain an active signature list. The method also includes decoding the signal in accordance with the active signature list to obtain a decoded signal.

    摘要翻译： 在一个实施例中，一种用于盲目检测低密度扩展（LDS）活动签名的方法，包括由第一节点从第二节点接收信号并根据签名列表去除相关信号以获得活动签名列表。 该方法还包括根据活动签名列表对该信号进行解码以获得解码信号。

    Low Complexity Receiver and Method for Low Density Signature Modulation
    7.
    发明申请
    Low Complexity Receiver and Method for Low Density Signature Modulation 有权
    低复杂度接收机和低密度签名调制方法

    公开(公告)号：US20140269663A1

    公开(公告)日：2014-09-18

    申请号：US14212583

    申请日：2014-03-14

    申请人： FutureWei Technologies, Inc.

    发明人： Hosein Nikopour ,  Alireza Bayesteh ,  Mohammadhadi Baligh

    IPC分类号： H04B7/26

    CPC分类号： H04B1/707 ,  H04J13/0007

    摘要： Method and apparatus embodiments are provided for low complexity message passing algorithm (MPA) detection with substantially minor or tolerated performance loss compared to the standard MPA. A method includes calculating, at a detector, a plurality of function nodes (FNs) according to a plurality of received multiplexing signals for a one or a plurality of user equipments (UEs) using a plurality of first MPA computations that map a plurality of variable nodes (VNs) corresponding to the UEs to the FNs and using a priori information in an initial vector of probabilities for each of the VNs, excluding from the first MPA computations a plurality of first relatively small multiplication terms, updating the probabilities for the VNs using the last calculated FNs and a plurality of second MPA computations that map the FNs to the VNs, and excluding a plurality of second relatively small multiplication terms from the second MPA calculations.

    摘要翻译： 提供了与标准MPA相比具有基本上较小或容忍的性能损失的低复杂度消息传递算法（MPA）检测的方法和装置实施例。 一种方法包括：使用多个第一MPA计算，根据用于一个或多个用户设备（UE）的多个接收到的多路复用信号，在检测器处计算多个功能节点（FN），所述第一MPA计算映射多个变量 将与UE对应的节点（VN）与FN相对应，并且对于每个VN使用概率初始向量中的先验信息，从第一MPA计算中排除多个第一相对较小的乘法项，更新VN的概率，使用 最后计算的FN和多个第二MPA计算，其将FN映射到VN，并且从第二MPA计算中排除多个第二相对较小的乘法项。

    System and Method for High-Rate Sparse Code Multiple Access in Downlink
    10.
    发明申请
    System and Method for High-Rate Sparse Code Multiple Access in Downlink 审中-公开

    公开(公告)号：US20170127423A1

    公开(公告)日：2017-05-04

    申请号：US15365332

    申请日：2016-11-30

    申请人： Huawei Technologies Co., Ltd.

    发明人： Mahmoud Taherzadeh Boroujeni ,  Alireza Bayesteh

    IPC分类号： H04W72/04

    CPC分类号： H04W72/0466 ,  H04J13/0007 ,  H04L1/00 ,  H04L1/004 ,  H04W88/02

    摘要： Higher rates of data communication may be utilized for downlink than for uplink. However, the decoding complexity of Sparse Code Multiple Access (SCMA) may become prohibitive for very high rates, resulting from, for example, a large number of layers, for very large constellations, or a combination of the two. Methods and transmitters are provided herein for transmitting that has been generated to reduce complexity at the receiver and methods and receivers are provided herein for receiving and decoding a received signal with reduced complexity. The reduced complexity in part is provided by the ability to maintain real and imaginary parts of a transmitted signal independent from one another.