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    Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
    71.
    发明授权
    Scattered pilot pattern and channel estimation method for MIMO-OFDM systems 有权
    MIMO-OFDM系统的分散导频模式和信道估计方法

    公开(公告)号：US08462872B2

    公开(公告)日：2013-06-11

    申请号：US13617051

    申请日：2012-09-14

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

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

    IPC分类号： H04L1/02 ,  H04B7/02

    CPC分类号： H04L27/2613 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0684 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0234 ,  H04L25/0244 ,  H04L27/2602 ,  H04L27/2627 ,  H04W52/42

    摘要： Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to base station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

    摘要翻译： 提供了使用用于数据符号和/或导频符号的跳频图案在OFDM（正交频分复用）传输资源中插入数据符号和导频符号的方法和装置。 数据符号和导频符号分配给二维时频模式的下行链路（基站到移动台）和上行链路（移动台到基站）的传输资源。 对于MIMO-OFDM（多输入多输出OFDM）通信系统的每个天线，导频符号以时间 - 频率的散射图案插入，并且数据符号以与其它信号的时间频率相同的跳频图案插入 天线。

    Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
    74.
    发明授权
    Scattered pilot pattern and channel estimation method for MIMO-OFDM systems 有权
    MIMO-OFDM系统的分散导频模式和信道估计方法

    公开(公告)号：US08254246B2

    公开(公告)日：2012-08-28

    申请号：US12468624

    申请日：2009-05-19

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

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

    IPC分类号： H04J11/00 ,  H04W4/00 ,  H04B7/216 ,  H04L27/00

    CPC分类号： H04L27/2613 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0684 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0234 ,  H04L25/0244 ,  H04L27/2602 ,  H04L27/2627 ,  H04W52/42

    摘要： A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.

    摘要翻译： 提供了一种用于减少MIMO-OFDM通信系统内的导频符号的数量并改善这种系统内的信道估计的方法和装置。 对于OFDM发射机中的每个发射天线，导频符号被编码为对于发射天线是唯一的。 然后将编码的导频符号插入到OFDM帧中以形成菱形晶格，使用相同频率的不同发射天线的菱形晶格，但是在时域中通过单个符号彼此偏移。 在OFDM接收机处，使用二维插值来估计针对钻石晶格的每个菱形的中心的符号的信道响应。 估计的信道响应在频域中被平滑化。 然后通过在频域中的内插来估计剩余符号的信道响应。

    Adaptive Transmission Systems and Methods
    75.
    发明申请
    Adaptive Transmission Systems and Methods 有权
    自适应传输系统和方法

    公开(公告)号：US20120188881A1

    公开(公告)日：2012-07-26

    申请号：US12226736

    申请日：2007-04-19

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

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

    IPC分类号： H04W24/00 ,  H04B7/04

    CPC分类号： H04B7/0689 ,  H04B7/0452 ,  H04B7/061 ,  H04B7/068 ,  H04B7/0697

    摘要： Abstract Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.

    摘要翻译： 摘要空间复用和发射分集可以提高无线通信系统的容量。 该系统和方法利用至少两种传输模式来适应具有多个天线的通信系统的通信方案。 至少两种传输模式可以但不一定用于上行链路通信。 两种传输模式可以从由单天线模式，分集模式，空间复用模式和混合分集和空间复用模式组成的组中选择。 至少两个传输模式可以涉及多个发射机之间的适配。 至少一个接收机可以指示要由发射机用于后续传输的传输模式。 发射机可以确定要用于后续传输的传输模式。 传输模式可以基于通道探测。

    Closed-loop MIMO systems and methods
    76.
    发明授权
    Closed-loop MIMO systems and methods 有权
    闭环MIMO系统和方法

    公开(公告)号：US08165018B2

    公开(公告)日：2012-04-24

    申请号：US12293362

    申请日：2007-03-19

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

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

    IPC分类号： G01R31/08

    CPC分类号： H04L5/0048 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242 ,  H04L25/03343 ,  H04L27/2601 ,  H04L27/2613 ,  H04L2025/03426 ,  H04L2025/03802

    摘要： Methods, devices and systems are provided for transmitting and receiving MIMO signals. Transmitting of the MIMO signals involves pre-coding each of at least two data symbols using a respective pre-coding codeword to preclude a corresponding plurality of pre-coded data symbols. A respective signal is transmitted from each of a plurality of antennas, the respective signal including one of the pre-coded signals and at least one pilot for use in channel estimation. The signals collectively further include at least one beacon pilot vector consisting of a respective beacon pilot per antenna, the beacon pilot vector containing contents known to a receiver for use by the receiver in determining the codeword used to pre-code the at least one data signal. Receiving of the MIMO signals involves receiving a MIMO signal containing data symbols pre-coded with a codeword. The MIMO signal includes pilots, and including at least one beacon pilot vector containing contents known to a receiver/each beacon pilot vector containing one symbol from each transmit antenna. Processing is performed on the at least one beacon pilot vector to determine which codeword was used to pre-code the data symbols.

    摘要翻译： 提供了发送和接收MIMO信号的方法，设备和系统。 MIMO信号的发送涉及使用相应的预编码码字预编码至少两个数据符号中的每一个，以排除对应的多个预编码数据符号。 相应的信号从多个天线中的每一个发送，各个信号包括一个预编码信号和至少一个导频，用于信道估计。 信号集体地进一步包括由每个天线的每个信标导频组成的至少一个信标导频向量，信标导频向量包含接收机已知的内容，以供接收机在确定用于对所述至少一个数据信号进行预编码的码字时使用 。 接收MIMO信号涉及接收包含用码字预编码的数据符号的MIMO信号。 MIMO信号包括导频，并且包括至少一个信标导频向量，其包含每个发射天线包含一个符号的接收机/每个信标导频向量已知的内容。 对至少一个信标导频向量执行处理，以确定哪个码字用于对数据符号进行预编码。

    SOFT HANDOFF IN OFDMA SYSTEM
    77.
    发明申请
    SOFT HANDOFF IN OFDMA SYSTEM 有权
    OFDMA系统中的软操作

    公开(公告)号：US20110310846A1

    公开(公告)日：2011-12-22

    申请号：US13221535

    申请日：2011-08-30

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

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

    IPC分类号： H04W36/00

    CPC分类号： H04W36/18 ,  H04B7/022 ,  H04B7/0691

    摘要： Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols are divided and allocated into subchannels. The OFDM symbols are divided and multiplexed. A soft handoff zone with a first dimension of the subchannels and a second dimension of the divided and multiplexed OFDM symbols is defined. The soft handoff zone has subcarriers with a subchannel definition, for example, an identical permutation.

    摘要翻译： 披露了OFDMA系统中的软切换。 如果基站的导频信号强度超过定义的阈值，则将基站添加到活动集列表中。 多个正交频分复用（OFDM）符号中的子载波被划分并分配给子信道。 OFDM符号被分割和多路复用。 定义了具有子信道的第一维度和分割和多路复用的OFDM符号的第二维度的软切换区域。 软切换区具有子信道定义的子载波，例如相同的置换。

    METHOD AND SYSTEM USING RELAYS WITH AGGREGATED SPECTRUM
    79.
    发明申请
    METHOD AND SYSTEM USING RELAYS WITH AGGREGATED SPECTRUM 有权
    使用集成光谱的继电器的方法和系统

    公开(公告)号：US20110158156A1

    公开(公告)日：2011-06-30

    申请号：US12996189

    申请日：2009-06-12

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

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

    IPC分类号： H04W72/04 ,  H04W88/04

    CPC分类号： H04L5/0039 ,  A61K9/2081 ,  A61K9/209 ,  A61K9/2886 ,  A61K9/5026 ,  A61K9/5073 ,  A61K9/5084 ,  A61K31/455 ,  A61K31/54 ,  A61K45/06 ,  H04B7/15542 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/14 ,  H04L25/20 ,  H04W52/143 ,  H04W72/0453 ,  H04W84/047 ,  A61K2300/00

    摘要： International Mobile Telecommunications (IMT) Advanced technology, also known as 4th Generation (4G) targets to support up to 100 MHz BW. LTE currently supports single carrier bandwidths of up to 20 MHz. The present application describes a multi-carrier approach in which some embodiments of the invention provide a simple solution of aggregating multiple single carrier bandwidths to obtain a wider bandwidth (>20 MHz). Such an approach may extend Long Term Evolution (LTE) bandwidth to greater than that provided by a single carrier, yet maintain full backward compatibility with technologies that predate 4G technology and utilize smaller, single carrier bandwidths. More generally, embodiments of the invention can apply to other communication standards than only LTE.

    摘要翻译： 国际移动电信（IMT）先进技术，也被称为第四代（4G）目标，以支持高达100 MHz的BW。 LTE目前支持高达20 MHz的单载波带宽。 本申请描述了多载波方法，其中本发明的一些实施例提供聚合多个单载波带宽以获得更宽带宽（> 20MHz）的简单解决方案。 这种方法可以将长期演进（LTE）带宽扩展到大于由单个载波提供的带宽，但仍然保持与早于4G技术并利用更小的单载波带宽的技术的完全向后兼容性。 更一般地，本发明的实施例可以应用于仅比LTE的其他通信标准。

    Methods of radio communication involving multiple radio channels, and radio signal repeater and mobile station apparatuses implementing same
    80.
    发明申请
    Methods of radio communication involving multiple radio channels, and radio signal repeater and mobile station apparatuses implementing same 审中-公开
    涉及多个无线信道的无线通信方法，实现无线信道的无线信号中继器和移动台装置

    公开(公告)号：US20110134772A1

    公开(公告)日：2011-06-09

    申请号：US12923519

    申请日：2010-09-24

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

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

    IPC分类号： H04W40/00 ,  H04J4/00 ,  H04W24/00

    CPC分类号： H04W84/047 ,  H04B7/15542 ,  H04B7/2606

    摘要： A method of facilitating radio communications involves receiving a first message from a first remote radio station on a first radio channel, transmitting the first message to a second remote radio station on a second radio channel, receiving a second message from the second remote radio station on a third radio channel, and transmitting the second message to the first remote radio station on a fourth radio channel. A method of radio communication involves receiving a first radio signal from a first remote radio station on a first radio channel, transmitting a second radio signal to the first remote radio station on a second radio channel, receiving a third radio signal from a second remote radio station on a third radio channel, and transmitting a fourth radio signal to the second remote radio station on a fourth radio channel. Radio signal repeater and mobile station apparatuses are also disclosed.

    摘要翻译： 一种促进无线电通信的方法涉及在第一无线电信道上从第一远程无线电站接收第一消息，在第二无线电信道上将第一消息发送到第二远程无线电台，从第二远程无线电台接收第二消息， 第三无线电信道，并且在第四无线电信道上将所述第二消息发送到所述第一远程无线电台。 无线电通信的方法涉及在第一无线电信道上从第一远程无线电站接收第一无线电信号，在第二无线电信道上向第一远程无线电台发送第二无线电信号，从第二无线电信道接收第三无线电信号 并且在第四无线电信道上向第二远程无线电台发送第四无线电信号。 还公开了无线电信号中继器和移动站装置。