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    Methods and devices for randomizing burst errors
    1.
    发明申请
    Methods and devices for randomizing burst errors 有权
    用于随机化突发错误的方法和设备

    公开(公告)号：US20070208988A1

    公开(公告)日：2007-09-06

    申请号：US11797767

    申请日：2007-05-07

    申请人： Ahmad Aman ,  Masoud Sajadieh ,  Mohsen Sarraf ,  Masood Yousefi

    发明人： Ahmad Aman ,  Masoud Sajadieh ,  Mohsen Sarraf ,  Masood Yousefi

    IPC分类号： H03M13/00

    CPC分类号： H03M13/2764 ,  H03M13/275

    摘要： Error bursts are randomized by an interleaver which makes use of “set leaders” to generate permutation indices. The permutation indices are used to route bits from initial positions in an input bit stream to re-arranged or randomized positions in an output bit stream. When the output bit stream is then transmitted and subsequently received by a de-interleaver which returns the received bits to their initial, pre-randomized positions, the resulting received signal has an acceptable bit error rate.

    摘要翻译： 错误突发由交织器随机化，该交织器利用“集合领导”来产生置换索引。 置换索引用于将输入比特流中的初始位置的比特路由到输出比特流中的重新排列或随机化的位置。 当输出比特流然后被解交织器发送并随后被接收时，其将接收到的比特返回到它们的初始预随机化位置，所得到的接收信号具有可接受的比特错误率。

    Methods and devices for randomizing burst errors
    2.
    发明申请
    Methods and devices for randomizing burst errors 有权
    用于随机化突发错误的方法和设备

    公开(公告)号：US20050015695A1

    公开(公告)日：2005-01-20

    申请号：US10620362

    申请日：2003-07-17

    申请人： Ahmad Aman ,  Masoud Sajadieh ,  Mohsen Sarraf ,  Masood Yousefi

    发明人： Ahmad Aman ,  Masoud Sajadieh ,  Mohsen Sarraf ,  Masood Yousefi

    IPC分类号： H03M13/00 ,  H03M13/27

    CPC分类号： H03M13/2764 ,  H03M13/275

    摘要： Error bursts are randomized by an interleaver which makes use of “set leaders” to generate permutation indices. The permutation indices are used to route bits from initial positions in an input bit stream to re-arranged or randomized positions in an output bit stream. When the output bit stream is then transmitted and subsequently received by a de-interleaver which returns the received bits to their initial, pre-randomized positions, the resulting received signal has an acceptable bit error rate.

    摘要翻译： 错误突发由交织器随机化，该交织器利用“集合领导”来产生置换索引。 置换索引用于将输入比特流中的初始位置的比特路由到输出比特流中的重新排列或随机化的位置。 当输出比特流然后被解交织器发送并随后被接收时，其将接收到的比特返回到它们的初始预随机化位置，所得到的接收信号具有可接受的比特错误率。

    Methods and devices for randomizing burst errors
    5.
    发明授权
    Methods and devices for randomizing burst errors 有权
    用于随机化突发错误的方法和设备

    公开(公告)号：US07870462B2

    公开(公告)日：2011-01-11

    申请号：US11797767

    申请日：2007-05-07

    申请人： Ahmad Khalid Aman ,  Masoud Sajadieh ,  Mohsen Sarraf ,  Masood Yousefi

    发明人： Ahmad Khalid Aman ,  Masoud Sajadieh ,  Mohsen Sarraf ,  Masood Yousefi

    IPC分类号： H03M13/00

    CPC分类号： H03M13/2764 ,  H03M13/275

    摘要： Error bursts are randomized by an interleaver which makes use of “set leaders” to generate permutation indices. The permutation indices are used to route bits from initial positions in an input bit stream to re-arranged or randomized positions in an output bit stream. When the output bit stream is then transmitted and subsequently received by a de-interleaver which returns the received bits to their initial, pre-randomized positions, the resulting received signal has an acceptable bit error rate.

    摘要翻译： 错误突发由交织器随机化，该交织器利用“集合领导”来产生置换索引。 置换索引用于将输入比特流中的初始位置的比特路由到输出比特流中的重新排列或随机化的位置。 当输出比特流然后被解交织器发送并随后被接收时，其将接收到的比特返回到它们的初始预随机化位置，所得到的接收信号具有可接受的比特错误率。

    Frame synchronization of an OFDM signal
    7.
    发明授权
    Frame synchronization of an OFDM signal 有权
    OFDM信号的帧同步

    公开(公告)号：US06928046B1

    公开(公告)日：2005-08-09

    申请号：US09304830

    申请日：1999-05-05

    申请人： Masoud Sajadieh ,  Mohsen Sarraf ,  Mohammad Hossein Zarrabizadeh

    发明人： Masoud Sajadieh ,  Mohsen Sarraf ,  Mohammad Hossein Zarrabizadeh

    IPC分类号： H03K9/00 ,  H04H20/88 ,  H04J11/00 ,  H04L27/26 ,  H04L27/28 ,  H04H5/00

    CPC分类号： H04L27/2656 ,  H04L27/2678

    摘要： Frame synchronization of a received OFDM signal (such as that used in a hybrid FM DAB system) is provided by filtering out significant outer frequency portions of the digital channels, and then using cyclic extension and correlation of the cyclically extended bits (or samples). The received OFDM signal is passed through a bandpass filter to remove outer digital subcarriers (i.e., those farthest from a center frequency) from a received OFDM signal before correlating to locate the OFDM frame boundaries. By filtering out digital subcarriers within each of the digital channels, particularly those closest to adjacent channels and thus most likely to be interfered with by an adjacent first channel OFDM (or FM) signal, correlation between cyclically extended bit (or sample) patterns and thus frame synchronization of OFDM signals can be improved significantly.

    摘要翻译： 通过滤出数字信道的重要外频部分，然后使用循环扩展比特（或采样）的循环扩展和相关来提供接收的OFDM信号（例如在混合FM DAB系统中使用的OFDM信号）的帧同步。 所接收的OFDM信号通过带通滤波器以在相关之前从接收的OFDM信号中去除外部数字子载波（即，离中心频率最远的那些），以定位OFDM帧边界。 通过滤除每个数字信道内的数字子载波，特别是那些最接近相邻信道的数字子载波，从而最可能被相邻第一信道OFDM（或FM）信号干扰，循环扩展位（或采样）模式之间的相关性因此 可以显着提高OFDM信号的帧同步。

    Delay-locked admission control scheme in communications networks
    8.
    发明授权
    Delay-locked admission control scheme in communications networks 有权
    通信网络中的延迟锁定准入控制方案

    公开(公告)号：US06687223B1

    公开(公告)日：2004-02-03

    申请号：US09480487

    申请日：2000-01-11

    申请人： Masoud Sajadieh ,  Mohsen Sarraf ,  Kazem Anaraky Sohraby

    发明人： Masoud Sajadieh ,  Mohsen Sarraf ,  Kazem Anaraky Sohraby

    IPC分类号： H04L1226

    CPC分类号： H04L47/822 ,  H04L47/15 ,  H04L47/70 ,  H04L47/826

    摘要： A connection admission control mechanism for packet, circuit, or hybrid packet and circuit networks whereby the signaling message (i.e., “query”) delay in a control channel of a network switch is maintained (i.e., “locked”) in a timed control interval at a desired level using feedback parameters relating to an estimated current amount of delay in the packet network switch during one or more previous timed control intervals, to guarantee or closely achieve a desired signaling message or query delay performance. The processing delay of the network is bound or “locked” at a desired delay performance level based on substantially real-time estimation or measurement of the current signaling message delays of queries or call control packet streams during one or more previous control intervals. Thus, connection processing is robust against variations in traffic intensity and/or processing capabilities of the switch, and a single QoS measure or specification can be applied to the network switch. Because of the resemblance to a phase locked loop (PLL) in hardware timing acquisition techniques, the technique is referred to herein as Delay-Locked Admission Control (DLAC). The control intervals may be adjusted based on the particular application. During each control interval, a predetermined maximum number of new queries are allowed into the processing fabric of the switch. In one embodiment, the maximum number of allowed during any one control interval is initialized at start-up to a desired value, e.g., to 1, to a randomly chosen integer, or chosen according to queuing theory estimates for the particular application and/or based on current conditions.

    摘要翻译： 用于分组，电路或混合分组和电路网络的连接准入控制机制，由此网络交换机的控制信道中的信令消息（即，“查询”）延迟在定时控制间隔中被维持（即，“锁定”） 使用与在一个或多个先前定时控制间隔期间的分组网络交换机中的估计的当前延迟量有关的反馈参数，以保证或紧密地实现期望的信令消息或查询延迟性能。 基于在一个或多个先前控制间隔期间的查询或呼叫控制分组流的当前信令消息延迟的基本上实时估计或测量，网络的处理延迟被绑定或“锁定”在期望的延迟性能水平。 因此，连接处理对于交换机的业务强度和/或处理能力的变化是稳健的，并且单个QoS测量或规范可以应用于网络交换机。 由于与硬件定时采集技术中的锁相环（PLL）相似，所以该技术在此被称为延迟锁定接纳控制（DLAC）。 可以基于具体应用来调整控制间隔。 在每个控制间隔期间，允许在交换机的处理结构中预定的最大数量的新查询。 在一个实施例中，在任何一个控制间隔期间允许的最大数量在启动时被初始化为期望值，例如1，到随机选择的整数，或根据特定应用的排队理论估计和/或 根据当前情况。

    ADAPTIVE SECTORIZATION OF A SPATIONAL REGION FOR PARALLEL MULTI-USER TRANSMISSIONS
    9.
    发明申请
    ADAPTIVE SECTORIZATION OF A SPATIONAL REGION FOR PARALLEL MULTI-USER TRANSMISSIONS 有权
    用于并行多用户传输的运动区域的自适应区域

    公开(公告)号：US20150131750A1

    公开(公告)日：2015-05-14

    申请号：US14126037

    申请日：2013-09-05

    申请人： Feng Xue ,  Jong-Kae Fwu ,  Masoud Sajadieh ,  Qinghua Li

    发明人： Feng Xue ,  Jong-Kae Fwu ,  Masoud Sajadieh ,  Qinghua Li

    IPC分类号： H04B7/04 ,  H04W24/08 ,  H04B7/06

    CPC分类号： H04B7/0482 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0695 ,  H04W24/08

    摘要： Technology to adaptively sectorize a spatial region for parallel multi-user transmissions is disclosed. In an example, a node (e.g., evolved Node B (eNB)) can include computer circuitry configured to: Generate a set of precoding matrices for a set of beam cones in the spatial region; and generate a beam cone for multi-user beamforming transmissions using system information for the beam cone. A precoding matrix in the set of precoding matrices can be used for each beam cone, and each beam cone can cover a beam cone spatial region that differs from another beam cone spatial region of another beam cone in the spatial region. Each beam cone can include system information that differs from the system information of the other beam cones in the spatial region.

    摘要翻译： 公开了用于对用于并行多用户传输的空间区域进行自适应划分的技术。 在一个示例中，节点（例如，演进节点B（eNB））可以包括被配置为：为空间区域中的一组波束锥生成一组预编码矩阵的计算机电路; 并使用束锥的系统信息生成用于多用户波束成形传输的波束锥。 预编码矩阵集合中的预编码矩阵可用于每个波束锥，并且每个波束锥可以覆盖不同于空间区域中另一波束锥的另一波束锥空间区域的波束锥空间区域。 每个束锥可以包括与空间区域中的其他束锥的系统信息不同的系统信息。