公开(公告)号：US06539067B1

公开(公告)日：2003-03-25

申请号：US09300495

申请日：1999-04-28

申请人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

发明人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

IPC分类号： H04L2706

CPC分类号： H04L25/0202

摘要： A method of estimating channel impulse response in a signal transmitted over a channel in a communication system is described. The channel estimator obtains a priori knowledge about the transmitted signal, and then uses the transmitted signal and the a priori knowledge to choose an estimate of channel impulse response which minimizes the expected distance between the transmitted signal and a reconstructed signal. The expected distance that is minimized is a cost function, represented by E{∥r−Bh∥2r}. By using soft decision feedback, the invention minimizes erroneous decision feedback which can cause error propagation. The decisions are usually in the form of log likelihood ratios (LLR).

摘要翻译： 描述了在通信系统中通过信道发送的信号中估计信道脉冲响应的方法。 信道估计器获得关于发射信号的先验知识，然后使用发射信号和先验知识来选择信道脉冲响应的估计，其使发射信号和重构信号之间的预期距离最小化。 最小化的预期距离是由E {‖r-Bh‖2r}表示的成本函数。 通过使用软判决反馈，本发明使可能导致错误传播的错误判定反馈最小化。 决策通常是对数似然比（LLR）的形式。

公开(公告)号：US06271772B1

公开(公告)日：2001-08-07

申请号：US09235049

申请日：1999-01-21

申请人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

发明人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

IPC分类号： H03M734

CPC分类号： H03M13/2948 ,  H03M13/29

摘要： Apparatus and method for iteratively decoding a signal are provided. The apparatus includes a central pool of resources for iteratively decoding signals. The central pool may run a plurality of iterative decoding processes, each process being allocated to a signal processing unit upon request and depending upon resource availability.

摘要翻译： 提供了用于迭代地解码信号的装置和方法。 该装置包括用于迭代地解码信号的中央资源库。 中央池可以运行多个迭代解码过程，每个进程根据请求分配给信号处理单元，并且取决于资源可用性。

公开(公告)号：US08855257B2

公开(公告)日：2014-10-07

申请号：US12186368

申请日：2008-08-05

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/10 ,  H04L1/06 ,  H04L1/00 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0413 ,  H04B7/0417 ,  H04B7/0669 ,  H04B7/068 ,  H04B7/0888 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0054 ,  H04L1/0625

摘要： A method of the multiple input multiple output feedback is disclosed. In accordance with an embodiment of the invention, the multiple input multiple output feedback method includes a receiver receiving a reference signal from a base station and calculating a signal to interference and noise ratio from the received reference signal. The method further includes determining a modulation and coding scheme based on the signal to interference and noise ratio and a receiver type.

摘要翻译： 公开了一种多输入多输出反馈的方法。 根据本发明的实施例，多输入多输出反馈方法包括接收来自基站的参考信号的接收机，并根据接收到的参考信号计算信噪比。 该方法还包括基于信号与干扰和噪声比确定调制和编码方案以及接收机类型。

公开(公告)号：US20090199076A1

公开(公告)日：2009-08-06

申请号：US12422696

申请日：2009-04-13

申请人： Jan Boer ,  Wilhelmus Diepstraten ,  Joachim S. Hammerschmidt ,  Syed Aon Mujtaba

发明人： Jan Boer ,  Wilhelmus Diepstraten ,  Joachim S. Hammerschmidt ,  Syed Aon Mujtaba

IPC分类号： G06F11/07

CPC分类号： H04L1/1829

摘要： A station for a communications network. In one embodiment, the station includes a decoder, a check processor, and a transmitter. The decoder is adapted to decode a received encoded data unit. The check processor is adapted to determine whether the encoded data unit has been correctly received. The transmitter is adapted to initiate, prior to the check processor completing the determination whether the encoded data unit has been correctly received, the transmission of an acknowledgment message comprising a frame having a plurality of different fields of data. The transmitter is adapted to modify the transmission of the acknowledgment message if the check processor determines that the data unit has not been correctly received.

摘要翻译： 通信网站。 在一个实施例中，站包括解码器，检查处理器和发射器。 解码器适于对接收到的编码数据单元进行解码。 检查处理器适于确定编码数据单元是否已被正确接收。 所述发射机适于在所述检查处理器完成所述编码数据单元是否已被正确接收的确定之前发起包括具有多个不同数据场的帧的确认消息的发送。 如果检查处理器确定数据单元未被正确接收，则发射机适于修改确认消息的传输。

公开(公告)号：US07355477B2

公开(公告)日：2008-04-08

申请号：US11423759

申请日：2006-06-13

申请人： Syed Aon Mujtaba ,  Edward E. Campbell

发明人： Syed Aon Mujtaba ,  Edward E. Campbell

IPC分类号： H03G3/10

CPC分类号： H03G1/0088 ,  H03G3/001 ,  H03G3/3042

摘要： A low cost, robust method and apparatus for controlling the gain of a power amplifier to compensate for changes that are gradual with time. The bias circuit of a power amplifier is sent one of three signals in response to a measurement of the average output power level of the power amplifier. If the average output power lever is less than a desired value, a signal to increment the bias current by a set amount is sent, so that the output power increases. If the average output power lever is more than the desired value, a signal to decrement the bias current by a set amount is sent. A third signal may be sent that causes the bias circuit to reset to a default value. The three signals may be sent as a two bit digital signal.

摘要翻译： 用于控制功率放大器的增益以补偿随着时间逐渐变化的变化的低成本，鲁棒的方法和装置。 响应于功率放大器的平均输出功率电平的测量，功率放大器的偏置电路被发送三个信号之一。 如果平均输出功率杆小于期望值，则发送将偏置电流增加设定量的信号，使得输出功率增加。 如果平均输出功率杆大于期望值，则发送将偏置电流减小设定量的信号。 可以发送导致偏置电路复位到默认值的第三信号。 三个信号可以作为两位数字信号发送。

公开(公告)号：US20070285170A1

公开(公告)日：2007-12-13

申请号：US11423759

申请日：2006-06-13

申请人： Syed Aon Mujtaba ,  Edward E. Campbell

发明人： Syed Aon Mujtaba ,  Edward E. Campbell

IPC分类号： H03G3/10

CPC分类号： H03G1/0088 ,  H03G3/001 ,  H03G3/3042

摘要： A low cost, robust method and apparatus for controlling the gain of a power amplifier to compensate for changes that are gradual with time. The bias circuit of a power amplifier is sent one of three signals in response to a measurement of the average output power level of the power amplifier. If the average output power lever is less than a desired value, a signal to increment the bias current by a set amount is sent, so that the output power increases. If the average output power lever is more than the desired value, a signal to decrement the bias current by a set amount is sent. A third signal may be sent that causes the bias circuit to reset to a default value. The three signals may be sent as a two bit digital signal.

摘要翻译： 用于控制功率放大器的增益以补偿随着时间逐渐变化的变化的低成本，鲁棒的方法和装置。 响应于功率放大器的平均输出功率电平的测量，功率放大器的偏置电路被发送三个信号之一。 如果平均输出功率杆小于期望值，则发送将偏置电流增加设定量的信号，使得输出功率增加。 如果平均输出功率杆大于期望值，则发送将偏置电流减小设定量的信号。 可以发送导致偏置电路复位到默认值的第三信号。 三个信号可以作为两位数字信号发送。

公开(公告)号：US06813254B1

公开(公告)日：2004-11-02

申请号：US09200521

申请日：1998-11-25

申请人： Syed Aon Mujtaba

发明人： Syed Aon Mujtaba

IPC分类号： H04B7216

CPC分类号： H04L5/143 ,  H04L5/023

摘要： Methods and apparatus for wireless communication in systems such as omni-beam and narrow-beam fixed wireless loop (FWL) systems. In a first technique in accordance with the invention, referred to as code division duplex (CDD) time-slotted CDMA, uplink and downlink portions of the system are separated using code division duplexing, while the users within a given cell are also separated using codes, e.g., using time-slotted CDMA. In a second technique in accordance with the invention, referred to as time division duplex (TDD) time-slotted CDMA, uplink and downlink portions of the system are separated using time division duplexing, e.g., time slots, while the users in a given cell are separated using codes, e.g., time-slotted CDMA. Both the CDD and TDD techniques may make use of an electronically-steered beam which is designed to provide simultaneous coverage within a given cell for two or more users separated by codes. In a third technique in accordance with the invention, referred to as orthogonal frequency division multiplexing (OFDM), uplink and downlink portions of the system are separated in frequency, while the users are, e.g., also separated in frequency.

摘要翻译： 全方位和窄波束固定无线环路（FWL）系统中无线通信的方法和装置。 在根据本发明的第一技术中，被称为码分双工（CDD）时隙的CDMA，系统的上行链路和下行链路部分使用码分双工分离，而给定小区内的用户也使用代码分离 ，例如使用时隙CDMA。 在根据本发明的第二种技术中，称为时分双工（TDD）时隙CDMA，系统的上行链路和下行链路部分使用时分双工（例如，时隙）分离，而给定小区中的用户 使用代码分离，例如时隙CDMA。 CDD和TDD技术都可以利用电子控制的光束，其被设计为在由代码分隔的两个或多个用户的同一个小区内提供同时的覆盖。 在根据本发明的被称为正交频分复用（OFDM）的第三技术中，系统的上行链路和下行链路部分在频率上分离，而用户例如也在频率上分离。

公开(公告)号：US09807651B2

公开(公告)日：2017-10-31

申请号：US13605898

申请日：2012-09-06

申请人： Syed Aon Mujtaba ,  Tarik Tabet ,  Paul V. Flynn ,  Kee-Bong Song

发明人： Syed Aon Mujtaba ,  Tarik Tabet ,  Paul V. Flynn ,  Kee-Bong Song

IPC分类号： H04W4/00 ,  H04W36/00 ,  H04W68/00 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04B3/46 ,  H04B17/00 ,  H04Q1/20 ,  H04W76/04

CPC分类号： H04W36/0066 ,  H04W36/0088 ,  H04W76/28

摘要： A user equipment (UE) operating in a communication system comprising a base station and one or more UEs. The UE may be configured to operate on or “camp” on two different networks with one radio. In this exemplary system, the radio may be normally connected to the first network (NW1) and may from time to time be “tuned away” from NW1 to a second network (NW2). The UE may inform NW1 that it has tuned away to another network, e.g., using start and end indicators. This information may prevent NW1 from wasting downlink capacity by unnecessarily allocating downlink resources to the UE during the tune-away. Alternatively, or in addition, this information may prevent NW1 from penalizing the UE, e.g., by reducing its future downlink allocations, since the UE does not respond to NW1 commands during the tune-away.

公开(公告)号：US08611453B2

公开(公告)日：2013-12-17

申请号：US13428784

申请日：2012-03-23

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/068 ,  H04B7/0689 ,  H04L1/0016

摘要： A Channel Quality Indicator table for wireless multiple input multiple output (MIMO) networks is disclosed. In one embodiment, a method of generating a table for channel quality indicator (CQI) for an open loop MIMO transmission includes calculating performance of a link between a transmitter and a user end unit for each MIMO transmission mode over a range of average signal-to-noise ratio, and selecting the MIMO transmission mode that maximizes performance for each subset of the range of average signal-to-noise ratio. The method further includes storing the selected MIMO transmission mode and the corresponding subset of the range of average signal-to-noise ratio in a CQI table, the CQI table being stored in an user end unit and a base transceiver station of the open loop MIMO network.

摘要翻译： 公开了一种用于无线多输入多输出（MIMO）网络的信道质量指标表。 在一个实施例中，生成用于开环MIMO传输的信道质量指示符（CQI）的表的方法包括：在平均信号到平均信号的范围内，针对每个MIMO传输模式来计算发射机和用户端单元之间的链路的性能 并且选择使平均信噪比范围的每个子集的性能最大化的MIMO传输模式。 该方法还包括将所选择的MIMO传输模式和平均信噪比范围的对应子集存储在CQI表中，该CQI表被存储在开环MIMO的用户端单元和基站中 网络。

公开(公告)号：US20130260758A1

公开(公告)日：2013-10-03

申请号：US13631640

申请日：2012-09-28

申请人： Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Paul Flynn ,  Kee-Bong Song ,  Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba ,  Christian Mucke

发明人： Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Paul Flynn ,  Kee-Bong Song ,  Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba ,  Christian Mucke

IPC分类号： H04W36/14

CPC分类号： H04W36/14 ,  H04W56/0045 ,  H04W76/16 ,  H04W76/25 ,  H04W76/27

摘要： Methods and apparatus for synchronizing operational state during hybrid network operation. In one embodiment, the various access technologies that makeup the hybrid network not fully synchronized. Thus, a wireless device operating in a mixed mode must be capable of managing synchronization across multiple access technologies. The wireless device is configured to estimate an expected “tune-away” period when disengaging with a one access technology to address events (for example, link maintenance, calls, data, and the like) or perform monitoring on a second access technology. The estimate is then used by the device to adjust its operational parameters on the technology from which it is tuning away. This ensures smooth switching away from and back to the various network technologies.

摘要翻译： 混合网络运行期间同步运行状态的方法和装置。 在一个实施例中，组合混合网络的各种接入技术未完全同步。 因此，以混合模式操作的无线设备必须能够跨多个接入技术来管理同步。 无线设备被配置为在使用一种接入技术来解决事件（例如，链路维护，呼叫，数据等）或在第二接入技术上执行监控时，估计预期的“调离”时段。 然后，设备使用该估计来调整其调谐技术的操作参数。 这确保了平滑地切换远离各种网络技术。