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    Multi-user MIMO systems and methods
    2.
    发明授权
    Multi-user MIMO systems and methods 有权
    多用户MIMO系统和方法

    公开(公告)号：US08284852B2

    公开(公告)日：2012-10-09

    申请号：US13251394

    申请日：2011-10-03

    申请人： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    发明人： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    IPC分类号： H04L27/28

    CPC分类号： H04W72/085 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/06

    摘要： A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

    摘要翻译： 提供了一种用于在多输入多输出（MIMO）系统中调度数据传输的方法和系统。 MIMO系统可以包括至少一个MIMO发射机和至少一个MIMO接收机。 来自一个或多个接收机的反馈可以被发射机用于改善MIMO通信系统中的质量，容量和调度。 该方法可以包括产生或接收关于MIMO信道度量的信息和关于发射信号的与信道质量指示符（CQI）有关的信息; 以及使用根据与所述MIMO信道度量有关的信息选择的MIMO模式以及根据与所述CQI有关的信息选择的自适应编码和调制，向接收机发送下一个传输。

    MULTI-USER MIMO SYSTEMS AND METHODS
    3.
    发明申请
    MULTI-USER MIMO SYSTEMS AND METHODS 有权
    多用户MIMO系统和方法

    公开(公告)号：US20090316802A1

    公开(公告)日：2009-12-24

    申请号：US12089938

    申请日：2006-10-12

    申请人： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    发明人： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    IPC分类号： H04L27/28

    CPC分类号： H04W72/085 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/06

    摘要： A method is provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system. The MIMO-OFDM system may comprise at least one MIMO-OFDM transmitter and at least one MIMO-OFDM receiver Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO-OFDM communication systems. The method may comprise generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

    摘要翻译： 提供了一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中调度数据传输的方法。 MIMO-OFDM系统可以包括至少一个MIMO-OFDM发射机，并且发射机可以使用来自一个或多个接收机的至少一个MIMO-OFDM接收机反馈来改善MIMO-OFDM通信系统中的质量，容量和调度。 该方法可以包括生成或接收关于MIMO信道度量的信息和关于发射信号的与信道质量指示符（CQI）有关的信息; 以及使用根据与所述MIMO信道度量有关的信息选择的MIMO模式以及根据与所述CQI有关的信息选择的自适应编码和调制，向接收机发送下一个传输。

    Multi-user MIMO systems and methods
    4.
    发明授权
    Multi-user MIMO systems and methods 有权
    多用户MIMO系统和方法

    公开(公告)号：US08054898B2

    公开(公告)日：2011-11-08

    申请号：US12089938

    申请日：2006-10-12

    申请人： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    发明人： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    IPC分类号： H04L27/28

    CPC分类号： H04W72/085 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/06

    摘要： A method is provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system. The MIMO-OFDM system may comprise at least one MIMO-OFDM transmitter and at least one MIMO-OFDM receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO-OFDM communication systems. The method may comprise generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

    摘要翻译： 提供了一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中调度数据传输的方法。 MIMO-OFDM系统可以包括至少一个MIMO-OFDM发射机和至少一个MIMO-OFDM接收机。 发射机可以使用一个或多个接收机的反馈来改善MIMO-OFDM通信系统中的质量，容量和调度。 该方法可以包括生成或接收关于MIMO信道度量的信息和关于发射信号的与信道质量指示符（CQI）有关的信息; 以及使用根据与所述MIMO信道度量有关的信息选择的MIMO模式以及根据与所述CQI有关的信息选择的自适应编码和调制，向接收机发送下一个传输。

    Space-time transmit diversity systems and methods for ofdm applications
    5.
    发明授权
    Space-time transmit diversity systems and methods for ofdm applications 有权
    时空发射分集系统和方法应用于ddm

    公开(公告)号：US09450664B2

    公开(公告)日：2016-09-20

    申请号：US11547073

    申请日：2005-04-04

    申请人： Ming Jia ,  Wen Tong ,  Jianglei Ma ,  Peiying Zhu ,  Dong-Sheng Yu

    发明人： Ming Jia ,  Wen Tong ,  Jianglei Ma ,  Peiying Zhu ,  Dong-Sheng Yu

    IPC分类号： H04L1/02 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

    CPC分类号： H04B7/0691 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0891 ,  H04L1/0069 ,  H04L1/0643 ,  H04L1/0662 ,  H04L1/0668 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

    摘要： Embodiments of the invention provide orthogonal Frequency Division Multiplexing-Space-time Block Codes (OFDMSTBC) mappings for code rate 1, 2 and 4 codes for 4 Transmit Antennas. To overcome the innate weakness of known codes, a new class of STBC codes is provided which is particularly suited for OFDM applications, although other applications are also contemplated. Codes for STBC mappings in the time direction, the frequency direction and a combined time frequency mapping for multiple antennas are provided. In OFDM applications, these codes exploit the properties of OFDM and FEC codes to substantially maintain the advantages of Alamouti codes. Furthermore, while the detailed examples given herein focus on four antenna applications, they can be easily extended to systems with more than four antennas.

    摘要翻译： 本发明的实施例为4个发射天线的码率1,2和4码提供正交频分复用 - 空时块码（OFDMSTBC）映射。 为了克服已知代码的固有缺点，提供了一类新的STBC代码，其特别适用于OFDM应用，尽管也考虑了其他应用。 提供了在时间方向上的STBC映射代码，频率方向和多个天线的组合时间频率映射。 在OFDM应用中，这些代码利用OFDM和FEC码的性质来基本上保持Alamouti码的优点。 此外，虽然本文给出的详细示例集中在四个天线应用，但是它们可以容易地扩展到具有多于四个天线的系统。

    Multi-user MIMO systems and methods
    6.
    发明授权
    Multi-user MIMO systems and methods 有权
    多用户MIMO系统和方法

    公开(公告)号：US08611454B2

    公开(公告)日：2013-12-17

    申请号：US13608234

    申请日：2012-09-10

    申请人： Wen Tong ,  Ming Jia ,  Jiangming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    发明人： Wen Tong ,  Ming Jia ,  Jiangming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

    IPC分类号： H04L1/02

    CPC分类号： H04W72/085 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/06

    摘要： A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

    摘要翻译： 提供了一种用于在多输入多输出（MIMO）系统中调度数据传输的方法和系统。 MIMO系统可以包括至少一个MIMO发射机和至少一个MIMO接收机。 来自一个或多个接收机的反馈可以被发射机用于改善MIMO通信系统中的质量，容量和调度。 该方法可以包括产生或接收关于MIMO信道度量的信息和关于发射信号的与信道质量指示符（CQI）有关的信息; 以及使用根据与所述MIMO信道度量有关的信息选择的MIMO模式以及根据与所述CQI有关的信息选择的自适应编码和调制，向接收机发送下一个传输。

    Wireless feedback system and method
    7.
    发明授权
    Wireless feedback system and method 有权
    无线反馈系统及方法

    公开(公告)号：US08605812B2

    公开(公告)日：2013-12-10

    申请号：US13464640

    申请日：2012-05-04

    申请人： Wen Tong ,  Hosein Nikopourdeilami, IV ,  Amir Keyvam Khandani ,  Hua Xu ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu

    发明人： Wen Tong ,  Hosein Nikopourdeilami, IV ,  Amir Keyvam Khandani ,  Hua Xu ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0478 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L69/04 ,  H04L69/14

    摘要： A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Sl for each codeword cl of the codebook C. Each codeword subset Sl defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Sl are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.

    摘要翻译： 码本C被提供在MIMO发射机以及MIMO接收机中。 码本C将包括M个码字ci，其中i是每个码字ci的唯一码字索引。 每个码字定义了应用于MIMO信号的加权因子，并且可以对应于在从MIMO发射机的各个天线发送之前应用于MIMO信号的信道矩阵或向量。 本发明为码本C的每个码字cl创建码字子集S1。每个码字子集S1定义从码本C中的所有码字ci中选择的L个码字cj。码字子集S1中的码字cj是L个码字 在整个码本中与相应的码字ci最相关。

    Adaptive two-dimensional channel interpolation
    8.
    发明授权
    Adaptive two-dimensional channel interpolation 有权
    自适应二维信道插值

    公开(公告)号：US08331465B2

    公开(公告)日：2012-12-11

    申请号：US12064566

    申请日：2006-08-22

    申请人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Dong-Sheng Yu ,  Hang Zhang

    发明人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Dong-Sheng Yu ,  Hang Zhang

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2611 ,  H04B7/06 ,  H04B7/08 ,  H04L5/0007 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2626 ,  H04L27/2647

    摘要： A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).

    摘要翻译： 一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。 导频符号通常在时间和频率上间隔开。 将导频符号插入的频率和时间的集合称为导频模式。 在一些情况下，导频图案是对角线形格子，规则的或不规则的。 该方法首先在较大相干性（时间或频率）的方向内插。 使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。 因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。