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    Methods and systems for transmission of orthogonal frequency division multiplexed symbols
    43.
    发明授权
    Methods and systems for transmission of orthogonal frequency division multiplexed symbols 有权
    用于传输正交频分复用符号的方法和系统

    公开(公告)号：US07813261B2

    公开(公告)日：2010-10-12

    申请号：US11887115

    申请日：2006-03-30

    申请人： Jianglei Ma ,  Hang Zhang ,  Wen Tong ,  Peiying Zhu ,  Ming Jia

    发明人： Jianglei Ma ,  Hang Zhang ,  Wen Tong ,  Peiying Zhu ,  Ming Jia

    IPC分类号： H04J11/00 ,  H04J3/26 ,  H04H20/71 ,  H04L23/02

    CPC分类号： H04L27/2602 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2655

    摘要： In some embodiments of the present invention there is provided a frame structure for transmitting an integer number of OFDM symbols in which some of the OFDM symbols are to be transmitted in a unicast format and some of the OFDM symbols are to be transmitted in a broadcast format. The frame structure includes partitioning of a frame into at least two portions to accommodate both unicast and broadcast modes in the frame. The frame structure is used for transmitting multiple frames in a serial manner from at least one transmitter. The unicast mode supports transmission of OFDM symbols from a single transmitter to a single receiver. The broadcast mode supports transmission of OFDM symbols from multiple transmitters to all receivers within range of the multiple transmitters. The multicast mode supports transmission of OFDM symbols from multiple transmitters to multiple receivers within range of the multiple transmitters.

    摘要翻译： 在本发明的一些实施例中，提供了一种用于发送整数个OFDM符号的帧结构，其中一些OFDM符号将以单播格式发送，并且一些OFDM符号将以广播格式发送 。 帧结构包括将帧划分成至少两个部分以适应帧中的单播和广播模式。 帧结构用于从至少一个发射机以串行方式发送多个帧。 单播模式支持将OFDM符号从单个发射机传输到单个接收机。 广播模式支持从多个发射机向多个发射机的范围内的所有接收机传输OFDM符号。 组播模式支持将多个发射机的OFDM符号从多个发射机的范围内传输到多个接收机。

    MULTI-USER MIMO SYSTEMS AND METHODS
    44.
    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。

    SPACE-TIME BLOCK CODING SYSTEMS AND METHODS
    45.
    发明申请
    SPACE-TIME BLOCK CODING SYSTEMS AND METHODS 有权
    空间块编码系统和方法

    公开(公告)号：US20090080566A1

    公开(公告)日：2009-03-26

    申请号：US11547187

    申请日：2004-04-01

    申请人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre Mikhailovich Chloma ,  Mikhail Germanovich Bakouline ,  Vitali Borisovich Kreindelin

    发明人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre Mikhailovich Chloma ,  Mikhail Germanovich Bakouline ,  Vitali Borisovich Kreindelin

    IPC分类号： H04L27/00

    CPC分类号： H04L1/0618

    摘要： Althrough orthonormal space-time coding matrices provide for optimal communication system performance in that associated correlation matrices include no non-zero off-diagonal elements, unity code rate orthonormal coding matrices are difficult to identify for arbitrary communication network equipment. According to embodiments of the present invention, non-orthonormal space-time coding matrices, for which associated correlation matrices include non-zero off-diagonal elements, are used to encode data symbols. The non-orthonormal space-time coding matrices are more easily determined, and undesirable effects of the non-zero off-diagonal components are reduced by selecting a coding matrix from among a number of such matrices. For example, a particular space-time coding matrix may be selected from a number of generated space-time coding matrices based on a number of non-zero off-diagonal elements or a power of a trace of the associated correlation matrices.

    摘要翻译： 通过正交空时编码矩阵提供最佳通信系统性能，因为相关联的相关矩阵不包括非零非对角元素，单位码率正交编码矩阵难以识别任意通信网络设备。 根据本发明的实施例，用于相关联的相关矩阵包括非零非对角元素的非正交空时编码矩阵用于对数据符号进行编码。 非正交空时编码矩阵更容易确定，并且通过从多个这样的矩阵中选择编码矩阵来减少非零非对角分量的不期望的影响。 例如，可以基于非零非对角元素的数量或相关联的相关矩阵的轨迹的幂来从多个生成的空时编码矩阵中选择特定时空编码矩阵。

    Methods and Systems For Ofdm Multiple Zone Partitioning
    48.
    发明申请
    Methods and Systems For Ofdm Multiple Zone Partitioning 有权
    Ofdm多区域分区方法与系统

    公开(公告)号：US20080232504A1

    公开(公告)日：2008-09-25

    申请号：US12064563

    申请日：2006-08-23

    申请人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang ,  Mo-Han Fong

    发明人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang ,  Mo-Han Fong

    IPC分类号： H04B7/02

    CPC分类号： H04L5/0051 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0618 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L25/02 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2647 ,  H04W52/325

    摘要： Aspects of the invention include methods and devices for inserting data and pilot symbols into Orthogonal Frequency Division Multiplexing (OFDM) frames having a time domain and a frequency domain. A method involves inserting in at least one zone of a first type a two dimensional array of data and pilot symbols in time and frequency and inserting in at least one zone of a second type a two dimensional array of data and pilot symbols in time and frequency. In some implementations the zone of the first type comprises common pilot symbols that can be detected by all receivers receiving the OFDM frame. In some implementations the zone of the second type comprises dedicated pilot symbols that are only detectable by a receiver that is aware of pre-processing used to encode the dedicated pilot symbols. According to various embodiments of the invention, the zones of the first and second types can be partitioned in the OFDM frame based on time division multiplexing (TDM), frequency division multiplexing (FDM) or combined TDM/FDM. Examples of types of transmissions that could be transmitted in different zones of a single OFDM frame are OFDM multiple input multiple output (MIMO) transmissions and OFDM beam forming transmissions.

    摘要翻译： 本发明的方面包括用于将数据和导频符号插入具有时域和频域的正交频分复用（OFDM）帧的方法和装置。 一种方法包括在时间和频率上插入数据和导频符号的二维阵列的第一类型的至少一个区域，并在第二类型的至少一个区域中插入时间和频率的数据和导频符号的二维阵列 。 在一些实现中，第一类型的区域包括可由接收OFDM帧的所有接收机检测的公共导频符号。 在一些实施方式中，第二类型的区域包括专用导频符号，其仅可以被知道用于对专用导频符号进行编码的预处理的接收机检测。 根据本发明的各种实施例，可以基于时分复用（TDM），频分复用（FDM）或组合TDM / FDM，在OFDM帧中划分第一类和第二类的区。 可以在单个OFDM帧的不同区域中传输的传输类型的示例是OFDM多输入多输出（MIMO）传输和OFDM波束形成传输。

    System and Method for Frequency Division Multiple Access Communications
    49.
    发明申请
    System and Method for Frequency Division Multiple Access Communications 有权
    用于频分多址通信的系统和方法

    公开(公告)号：US20080219235A1

    公开(公告)日：2008-09-11

    申请号：US11996463

    申请日：2006-07-27

    申请人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Moussa Abdi ,  Evelyne Le Strat ,  Sarah Boumendil

    发明人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Moussa Abdi ,  Evelyne Le Strat ,  Sarah Boumendil

    IPC分类号： H04B7/208

    CPC分类号： H04B7/2621 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0051

    摘要： A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions, having an improved pilot insertion scheme for single carrier based communications is provided. A first time duration for transmission of a data payload block (7) is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block (70) is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration (70) is not greater than the first time duration (7).

    摘要翻译： 提供了一种用于上行链路和/或下行链路方向上的无线频分多址通信的方法和系统，其具有用于基于单载波的通信的改进的导频插入方案。 建立用于发送数据有效载荷块（7）的第一时间段，并且使用第一频域或时域处理传输。 建立用于发送至少一个导频块（70）的第二持续时间，并且使用第二频域或时域处理该传输，第二持续时间（70）不大于第一持续时间（7） ）。