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    Auxiliary FL MIMO pilot transmission in 1XEV-DO
    22.
    发明授权
    Auxiliary FL MIMO pilot transmission in 1XEV-DO 有权
    1XEV-DO中的辅助FL MIMO导频传输

    公开(公告)号：US08077654B2

    公开(公告)日：2011-12-13

    申请号：US11507787

    申请日：2006-08-21

    申请人： Arak Sutivong ,  Avneesh Agrawal ,  Tamer Kadous

    发明人： Arak Sutivong ,  Avneesh Agrawal ,  Tamer Kadous

    IPC分类号： H04W4/00 ,  H04B7/185

    CPC分类号： H04W52/325 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632

    摘要： Systems and methodologies are described that facilitate providing auxiliary multiple-input, multiple-output (MIMO) pilot signals to MIMO user devices in a wireless communication environment. According to some aspects, a portion of data transmission power may be reallocated for auxiliary MIMO pilot transmission during a data segment in a time slot, in order to permit a MIMO user device to perform CQI and rank prediction. Additionally or alternatively, non-MIMO pilot transmission power may be reallocated in a pilot segment in the time slot for transmission of an auxiliary MIMO pilot signal to permit the MIMO user device to demodulate data transmitted in data segments of the time slot. MIMO pilot signals may additionally be time-division multiplexed within or across time slots and may be transmitted over available Walsh codes in data and control segments.

    摘要翻译： 描述了有助于在无线通信环境中向MIMO用户设备提供辅助多输入多输出（MIMO）导频信号的系统和方法。 根据一些方面，可以在时隙中的数据段期间重新分配一部分数据发送功率用于辅助MIMO导频传输，以便允许MIMO用户设备执行CQI和秩预测。 附加地或替代地，可以在时隙中的导频段中重新分配非MIMO导频传输功率，以传输辅助MIMO导频信号，以允许MIMO用户设备解调在该时隙的数据段中发送的数据。 MIMO导频信号可以另外在时隙内或跨时隙进行时分复用，并且可以在数据和控制段中通过可用的沃尔什码传输。

    Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system
    24.
    发明申请
    Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system 有权
    多天线系统中MISO和MIMO接收机的导频传输和信道估计

    公开(公告)号：US20050195763A1

    公开(公告)日：2005-09-08

    申请号：US11020888

    申请日：2004-12-22

    申请人： Tamer Kadous ,  Avneesh Agrawal ,  Dhananjay Gore

    发明人： Tamer Kadous ,  Avneesh Agrawal ,  Dhananjay Gore

    IPC分类号： H04J99/00 ,  H04B7/06 ,  H04L25/02 ,  H04B7/00

    CPC分类号： H04L25/0226 ,  H04B7/0684

    摘要： A transmitter generates multiple composite pilots with a training matrix and a gain matrix. Each composite pilot includes multiple training pilots generated with multiple columns of the training matrix and scaled with multiple gain elements in a column of the gain matrix. The transmitter transmits each composite pilot via multiple transmit antennas. A MISO receiver obtains received symbols for the multiple composite pilots and derives an estimate of a composite MISO channel. For OFDM, the MISO receiver derives an initial impulse response estimate for each composite pilot, filters the initial impulse response estimates for all composite pilots, and derives a frequency response estimate for the composite MISO channel. A MIMO receiver obtains and processes received symbols for the multiple composite pilots based on the training and gain matrices and derives channel estimates for individual SISO channels between the multiple transmit antennas and multiple receive antennas.

    摘要翻译： 发射机生成具有训练矩阵和增益矩阵的多个复合导频。 每个复合导频包括由训练矩阵的多列生成的多个训练导频，并且在增益矩阵的列中用多个增益元素进行了缩放。 发射机经由多个发射天线发送每个复合导频。 MISO接收器获得用于多个复合导频的接收符号，并导出复合MISO信道的估计。 对于OFDM，MISO接收机为每个复合导频导出初始脉冲响应估计，对所有复合导频进行初始脉冲响应估计，并得出复合MISO信道的频率响应估计。 MIMO接收机基于训练和增益矩阵获得并处理多个复合导频的接收符号，并导出多个发射天线与多个接收天线之间的各个SISO信道的信道估计。

    Uplink pilot and signaling transmission in wireless communication systems
    25.
    发明授权
    Uplink pilot and signaling transmission in wireless communication systems 有权
    无线通信系统中的上行链路导频和信令传输

    公开(公告)号：US08724555B2

    公开(公告)日：2014-05-13

    申请号：US11418930

    申请日：2006-05-04

    申请人： Ranganathan Krishnan ,  Rajiv Vijayan ,  Tamer Kadous

    发明人： Ranganathan Krishnan ,  Rajiv Vijayan ,  Tamer Kadous

    IPC分类号： H04W4/00 ,  H04J11/00 ,  H04W74/00 ,  H04W72/04

    CPC分类号： H04W74/004 ,  H04L5/0023 ,  H04L5/0041 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/0248 ,  H04W52/325 ,  H04W72/0413

    摘要： Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multiple terminals may transmit simultaneously on their assigned subbands. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal. Pilot transmissions from the terminals are received, and a channel estimate is derived for each terminal based on the pilot received on the assigned subbands. The channel estimate comprises a response for additional subbands not included in the assigned group. Subband multiplexing may also be used for uplink signaling transmission.

    摘要翻译： 在OFDM系统中在上行链路上更有效地发送导频和信令的技术。 通过子带复用，系统中的M个可用子带被划分成Q个不相关的子带组。 每个子带组可被分配给用于上行链路导频传输的不同终端。 多个终端可以在其分配的子带上同时发送。 即使S代替M个子带用于每个终端的导频传输，导频的发射功率也可以按比例更高以获得相同的总导频能量。 接收来自终端的导频传输，并且基于在所分配的子带上接收到的导频，为每个终端导出信道估计。 信道估计包括对未分配组中的附加子带的响应。 子带复用也可以用于上行链路信令传输。

    System and method for supporting multiple reverse link data streams
    27.
    发明授权
    System and method for supporting multiple reverse link data streams 有权
    支持多个反向链路数据流的系统和方法

    公开(公告)号：US08654705B2

    公开(公告)日：2014-02-18

    申请号：US12754018

    申请日：2010-04-05

    申请人： Jibing Wang ,  Tamer Kadous ,  Rashid Ahmed Akbar Attar

    发明人： Jibing Wang ,  Tamer Kadous ,  Rashid Ahmed Akbar Attar

    IPC分类号： H04W52/04

    CPC分类号： H04B7/0613 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0691 ,  H04B7/0695 ,  H04W52/42

    摘要： Techniques for rank adaptation and multiple-stream reverse link communications in a wireless access network are disclosed. A remote unit transmits one or more reverse link data streams using separate identifiers to a base station. The number of reverse link data streams may be determined according to feedback from the base station or it may be determined by testing one or more multiple-antenna transmit hypotheses. The base station may estimate channel conditions using information obtained from the one or more reverse link data streams and may determine a spatial rank of the communication channel. The remote unit may perform separate error control and power control processes for each reverse link data stream in cooperation with the base station.

    摘要翻译： 公开了一种用于无线接入网络中的秩适配和多流反向链路通信的技术。 远程单元使用单独的标识符向基站发送一个或多个反向链路数据流。 反向链路数据流的数量可以根据来自基站的反馈来确定，或者可以通过测试一个或多个多天线发射假设来确定。 基站可以使用从一个或多个反向链路数据流获得的信息估计信道条件，并且可以确定通信信道的空间等级。 远程单元可以与基站协作地为每个反向链路数据流执行单独的错误控制和功率控制过程。

    METHOD AND APPARATUS FOR ANTENNA DIVERSITY IN MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEMS
    28.
    发明申请
    METHOD AND APPARATUS FOR ANTENNA DIVERSITY IN MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEMS 有权
    多输入多输出通信系统中天线多样性的方法与装置

    公开(公告)号：US20120120925A1

    公开(公告)日：2012-05-17

    申请号：US13271121

    申请日：2011-10-11

    申请人： Tamer Kadous ,  Aamod Khandekar ,  Dhananjay Ashok Gore ,  Alexei Gorokhov

    发明人： Tamer Kadous ,  Aamod Khandekar ,  Dhananjay Ashok Gore ,  Alexei Gorokhov

    IPC分类号： H04W72/04

    CPC分类号： H04L5/0023 ,  H04B7/0456 ,  H04B7/061 ,  H04B7/0671 ,  H04B7/0691 ,  H04B7/0697 ,  H04L27/2602

    摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g, based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.

    摘要翻译： 描述了可以灵活地实现期望的空间复用顺序，空间分集顺序和信道估计开销顺序的传输方案。 对于数据传输，确定接收机的分配子载波和空间复用顺序（M），其中M≥1。 对于每个分配的子载波，从由正交矩阵的V列形成的V个虚拟天线中选择M个虚拟天线，其中V≥M。 可以选择V以实现期望的空间分集顺序和信道估计开销顺序。 通过应用正交矩阵将输出符号映射到为每个分配的副载波选择的M个虚拟天线。 导频符号也映射到V虚拟天线。 映射的符号被提供用于从T发射天线发射，其中T≥V。 为映射符号生成传输符号，例如基于OFDM或SC-FDMA。 可以对T发射天线应用不同的循环延迟以改善分集。

    Space division multiple access channelization in wireless communication systems
    29.
    发明授权
    Space division multiple access channelization in wireless communication systems 有权
    无线通信系统中的空分多址信道化

    公开(公告)号：US07903615B2

    公开(公告)日：2011-03-08

    申请号：US11869589

    申请日：2007-10-09

    申请人： Alexei Gorokhov ,  Tamer Kadous

    发明人： Alexei Gorokhov ,  Tamer Kadous

    IPC分类号： H04B7/216

    CPC分类号： H04B7/0697 ,  H04L1/1685 ,  H04L2001/0093 ,  H04W16/28 ,  H04W72/12

    摘要： Space division multiple access channelization is provided that includes scheduling transmission for two or more terminals and utilizing different code offsets that correspond to different sub-trees. The transmissions can be scheduled on overlapping frequency resources for overlapping time periods on different spatial resources. The pilot code offsets provide different pilot signatures so that the pilot transmissions do not overlap. The overlapping frequency resources can partially overlap or completely overlap.

    摘要翻译： 提供了空分多址信道化，其包括对两个或更多个终端进行调度传输，并利用与不同子树相对应的不同的码偏移。 可以在重叠的频率资源上调度传输，以便在不同的空间资源上重叠时间段。 导频代码偏移提供不同的导频签名，使得导频传输不重叠。 重叠频率资源可能部分重叠或完全重叠。

    Successive interference cancellation receiver processing with selection diversity
    30.
    发明授权
    Successive interference cancellation receiver processing with selection diversity 有权
    连续干扰消除接收机处理与选择分集

    公开(公告)号：US07890144B2

    公开(公告)日：2011-02-15

    申请号：US12257200

    申请日：2008-10-23

    申请人： Anand D. Subramaniam ,  Tamer Kadous

    发明人： Anand D. Subramaniam ,  Tamer Kadous

    IPC分类号： H04B1/38 ,  H04B17/00

    CPC分类号： H04L1/0687 ,  H04B7/0602 ,  H04B7/0802 ,  H04L1/0003 ,  H04L1/0009

    摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.

    摘要翻译： 技术被提供以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而可以打开或关闭每个NT个发射天线。 一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。 达NT！ 对订单进行评估。 对于每个排序，对于NT个发射天线获得NT后检测SNR，并且用于确定NT数据速率，其中如果后检测SNR比最小所需SNR更差，则数据速率为零。 基于NT数据速率对每个排序计算总体数据速率。 选择具有最高总数据速率的排序使用。 最多NT个符号流以所选择的排序和传输的数据速率进行处理。 所发送的符号流根据所选择的顺序被恢复。