公开(公告)号：US06873606B2

公开(公告)日：2005-03-29

申请号：US10367234

申请日：2003-02-14

申请人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

发明人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

IPC分类号： H04B7/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04B1/02

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并且充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以（或接近）相关天线的全功率发射。

公开(公告)号：US20050013239A1

公开(公告)日：2005-01-20

申请号：US10919698

申请日：2004-08-16

申请人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

发明人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

IPC分类号： H04B7/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04J11/00 ,  H04Q7/00

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并且充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以（或接近）相关天线的全功率发射。

公开(公告)号：US20050008092A1

公开(公告)日：2005-01-13

申请号：US10917079

申请日：2004-08-11

申请人： Tamer Kadous

发明人： Tamer Kadous

IPC分类号： H04L1/06 ,  H04B3/46

CPC分类号： H04L1/0618

摘要： Techniques to process a number of “received” symbol streams in a Multiple-Input Multiple-Output (MIMO) system with multipath channels such that improved performance may be achieved when using successive interference cancellation (SIC) processing. In an aspect, metrics indicative of the quality or “goodness” of a “detected” symbol stream are provided. These metrics consider the frequency selective response of the multipath channels used to transmit the symbol stream. For example, the metrics may relate to (1) an overall channel capacity for all transmission channels used for the symbol stream, or (2) an equivalent signal-to-interference noise ratio (SNR) of an Additive White Gaussian Noise (AWGN) channel modeling these transmission channels. In another aspect, techniques are provided to process the received symbol streams, using SIC processing, to recover a number of transmitted symbol streams. The particular order in which the symbol streams are recovered is determined based on the metrics determined for symbol streams detected at each SIC processing stage.

摘要翻译： 在具有多路径信道的多输入多输出（MIMO）系统中处理多个“接收”符号流的技术，使得当使用连续干扰消除（SIC）处理时可以实现改进的性能。 在一方面，提供了指示“检测”符号流的质量或“良好”的度量。 这些度量考虑了用于发送符号流的多径信道的频率选择响应。 例如，度量可以涉及（1）用于符号流的所有传输信道的总体信道容量，或者（2）加性白高斯噪声（AWGN）的等效信号与干扰噪声比（SNR） 通道建模这些传输通道。 在另一方面，提供了使用SIC处理来处理所接收的符号流的技术来恢复多个传输的符号流。 基于为在每个SIC处理阶段检测到的符号流确定的度量来确定符号流被恢复的特定顺序。

公开(公告)号：US09184870B2

公开(公告)日：2015-11-10

申请号：US11261836

申请日：2005-10-27

申请人： Hemanth Sampath ,  Alexei Gorokhov ,  Aamod Khandekar ,  Edward Harrison Teague ,  David Jonathan Julian ,  Tamer Kadous ,  Arak Sutivong

发明人： Hemanth Sampath ,  Alexei Gorokhov ,  Aamod Khandekar ,  Edward Harrison Teague ,  David Jonathan Julian ,  Tamer Kadous ,  Arak Sutivong

IPC分类号： H04B7/14 ,  H04L1/00 ,  H04B1/00 ,  H04W72/00 ,  H04W4/00 ,  H04L5/00 ,  H04L25/02 ,  H04L25/03

CPC分类号： H04L1/0028 ,  H04L1/0026 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： Methods and apparatuses are disclosed for providing flexible channel information feedback. In some cases this may be according to reporting types assigned by one or more sectors, with different reporting types for each sector. In other cases, a reporting mode is determined to determine the reporting types to be utilized.

摘要翻译： 公开了用于提供灵活的信道信息反馈的方法和装置。 在某些情况下，这可能是根据一个或多个部门分配的报告类型，每个部门具有不同的报告类型。 在其他情况下，确定报告模式以确定要使用的报告类型。

公开(公告)号：US09172453B2

公开(公告)日：2015-10-27

申请号：US11261064

申请日：2005-10-27

申请人： Jibing Wang ,  Tamer Kadous ,  Dhananjay Ashok Gore

发明人： Jibing Wang ,  Tamer Kadous ,  Dhananjay Ashok Gore

IPC分类号： H04J1/00 ,  H04B7/06

CPC分类号： H04B7/0639 ,  H04B7/063

摘要： Accordingly, a method and apparatus are provided wherein a receiver system selects a pre-coding matrix, comprising eigen-beamforming weights, to use and provides rank value and matrix index associated with the selected matrix to the transmitter system. The transmitter system upon receiving the rank value and matrix index, determine if the matrix associated with the matrix index provided by the receiver system can be used. If not, them transmitter system selects another matrix for determining eigen-beamforming weights.

摘要翻译： 因此，提供了一种方法和装置，其中接收机系统选择包括特征波束形成权重的预编码矩阵，以使用并向发射机系统提供与所选矩阵相关联的秩值和矩阵索引。 发射机系统在接收到秩值和矩阵索引后，确定是否可以使用与接收机系统提供的矩阵索引关联的矩阵。 如果不是，则它们发射机系统选择用于确定特征波束形成权重的另一矩阵。

公开(公告)号：US08908496B2

公开(公告)日：2014-12-09

申请号：US10801624

申请日：2004-03-15

申请人： Tamer Kadous

发明人： Tamer Kadous

IPC分类号： G01R31/08 ,  H04L1/18 ,  H04L1/00 ,  H03M13/33 ,  H04L5/00 ,  H04L1/16 ,  H04L1/06 ,  H04L27/26

CPC分类号： H04L1/1819 ,  H03M13/33 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0071 ,  H04L1/0618 ,  H04L1/1671 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2626 ,  H04L27/2647

摘要： For an incremental redundancy (IR) transmission in a MIMO system, a transmitter processes (e.g., encodes, partitions, interleaves, and modulates) a data packet based on a selected rate to obtain multiple data symbol blocks. The transmitter transmits one data symbol block at a time until a receiver correctly recovers the data packet or all blocks are transmitted. Whenever a data symbol block is received from the transmitter, the receiver detects a received symbol block to obtain a detected symbol block, processes (e.g., demodulates, deinterleaves, re-assembles, and decodes) all detected symbol blocks obtained for the data packet, and provides a decoded packet. If the decoded packet is in error, then the receiver repeats the processing when another data symbol block is received for the data packet. The receiver may also perform iterative detection and decoding on the received symbol blocks for the data packet multiple times to obtain the decoded packet.

摘要翻译： 对于MIMO系统中的增量冗余（IR）传输，发射机基于所选择的速率处理（例如，编码，分割，交织和调制）数据分组，以获得多个数据符号块。 发射机一次发送一个数据符号块，直到接收机正确地恢复数据包或者所有块都被发送。 每当从发射机接收到数据符号块时，接收机检测接收的符号块以获得检测到的符号块，处理（例如，解调，解交织，重新组合和解码）为数据分组获得的所有检测到的符号块， 并提供解码的分组。 如果解码的分组是错误的，那么当接收到数据分组的另一数据符号块时，接收机重复该处理。 接收机也可以多次对数据包的接收符号块执行迭代检测和解码，以获得解码的分组。

公开(公告)号：US20120224502A1

公开(公告)日：2012-09-06

申请号：US13473229

申请日：2012-05-16

申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Tamer Kadous ,  Mohammad J. Borran

发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Tamer Kadous ,  Mohammad J. Borran

IPC分类号： H04W52/24 ,  H04W24/00

CPC分类号： H04W52/16 ,  H04W52/146 ,  H04W52/241 ,  H04W52/243 ,  H04W52/244 ,  H04W52/325 ,  H04W52/40

摘要： Techniques for controlling transmit power of a terminal are described. The terminal may send a first transmission (e.g., for pilot or signaling) on the reverse link, receive feedback (e.g., a power control command or an erasure indicator) for the first transmission, and adjust a reference power level based on the feedback. The terminal may also receive interference information and possibly other parameters such as a pilot quality indicator (PQI), an offset factor, and a boost factor from a sector. The terminal may determine transmit power for a second transmission to the sector based on the interference information, the reference power level, and/or the other parameters. The terminal may receive the feedback from one sector and may send the second transmission with CDMA or OFDMA to the same sector or a different sector.

摘要翻译： 描述用于控制终端的发射功率的技术。 终端可以在反向链路上发送第一传输（例如，用于导频或信令），接收用于第一传输的反馈（例如，功率控制命令或擦除指示符），并且基于反馈来调整参考功率电平。 终端还可以从扇区接收干扰信息和可能的其它参数，例如导频质量指示符（PQI），偏移因子和增强因子。 终端可以基于干扰信息，参考功率电平和/或其他参数来确定对扇区的第二传输的发射功率。 终端可以从一个扇区接收反馈，并且可以将具有CDMA或OFDMA的第二传输发送到同一扇区或不同扇区。

公开(公告)号：US20120140798A1

公开(公告)日：2012-06-07

申请号：US13271108

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： H04B1/38

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.

公开(公告)号：US20120120861A1

公开(公告)日：2012-05-17

申请号：US13024057

申请日：2011-02-09

申请人： Sandip Sarkar ,  Aamod Khandekar ,  Tamer Kadous

发明人： Sandip Sarkar ,  Aamod Khandekar ,  Tamer Kadous

IPC分类号： H04W4/06

CPC分类号： H04W72/005

摘要： Methods and apparatus for assigning, identifying and controlling broadcast transmissions are disclosed. A broadcast flow is assigned to a broadcast logical channel of the physical resources of a wireless communication channel. A broadcast channel control message indicative of parameters of the broadcast logical channel is generated. Upon receipt, the broadcast channel control message is processed and used to accordingly process the received broadcast transmission.

摘要翻译： 公开了用于分配，识别和控制广播传输的方法和装置。 广播流被分配给无线通信信道的物理资源的广播逻辑信道。 生成表示广播逻辑信道的参数的广播信道控制消息。 在接收到广播频道控制消息时，处理并用于相应地处理所接收的广播传输。

公开(公告)号：US08139672B2

公开(公告)日：2012-03-20

申请号：US11390622

申请日：2006-03-27

申请人： Dhananjay Ashok Gore ,  Tingfang Ji ,  Tamer Kadous

发明人： Dhananjay Ashok Gore ,  Tingfang Ji ,  Tamer Kadous

IPC分类号： H04L27/00

CPC分类号： H04L27/2613 ,  H04B7/0413 ,  H04L25/0226

摘要： Systems and methodologies are described that facilitate improved pilot information to MIMO user devices without increasing interference of SISO user devices in a wireless communication environment. A data communication signal can be generated and transmitted at a first power level, and a continuous pilot waveform comprising pilot information related to the data signal can be generated and sent at a second power level below the first transmission power level. Alternatively, a discontinuous pilot waveform can be generated so that it does not overlap with pilot segments in the first waveform, and can be transmitted at the first power level without interfering with the first waveform as received by a SISO user device. A MIMO user device can receive both waveforms, and can employ the pilot waveform to better estimate a MIMO channel for the first waveform.

摘要翻译： 描述了在不增加SISO用户设备在无线通信环境中的干扰的情况下促进对MIMO用户设备的改进的导频信息的系统和方法。 可以以第一功率电平生成并发送数据通信信号，并且可以以低于第一发送功率电平的第二功率电平生成包括与数据信号相关的导频信息的连续导频波形。 或者，可以生成不连续的导频波形，使得其不与第一波形中的导频段重叠，并且可以在不干扰由SISO用户设备接收的第一波形的情况下以第一功率电平发送。 MIMO用户设备可以接收两个波形，并且可以使用导频波形来更好地估计用于第一波形的MIMO信道。