公开(公告)号：US20050101259A1

公开(公告)日：2005-05-12

申请号：US10792127

申请日：2004-03-04

申请人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre Chloma ,  Mikhail Bakouline ,  Vitali Kreindeline

发明人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre Chloma ,  Mikhail Bakouline ,  Vitali Kreindeline

IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L25/02 ,  H04B1/00 ,  H04B7/00

CPC分类号： H04B7/0482 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0656 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03426

摘要： Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers. The coding weights are applied to communication signals to be transmitted from the transmitter to the receivers. Each receiver decodes received signals using inverses of the coding weights. Embodiments of the invention support multi-user MIMO (Multiple Input Multiple Output) where each receiver has fewer antennas than the transmitter, and enhance system performance if the total number of antennas at all of the receivers exceeds the number of antennas at the transmitter.

摘要翻译： 提供了在多用户通信系统中优化通信信道的系统和方法。 基于用于发射机和多个接收机之间的通信信道的通信信道状态信息来确定编码权重。 编码权重被应用于从发射机发射到接收机的通信信号。 每个接收机使用反编码权重来解码接收到的信号。 本发明的实施例支持多用户MIMO（多输入多输出），其中每个接收机具有比发射机更少的天线，并且如果所有接收机的天线总数超过发射机的天线数量，则增强系统性能。

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。

公开(公告)号：US09258102B2

公开(公告)日：2016-02-09

申请号：US11990868

申请日：2006-08-23

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

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

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04W16/02 ,  H04W16/12

CPC分类号： H04L5/0073 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0062 ,  H04W16/02 ,  H04W16/12

摘要： The present invention provides methods and devices for mitigating inter-cell interference in communication environments having a plurality of cells. In some embodiments, a time-frequency transmission resource that includes multiple sub-carriers over multiple OFDM symbol intervals is partitioned into a first zone and a second zone. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells. In the second zone, transmissions are transmitted on at least one frequency sub-band which is used by less than all of the plurality of cells, so as to mitigate inter-cell interference. In some embodiments, in the first zone transmissions are transmitted using a transmission power which is common to all of the plurality of cells and in the second zone transmissions are transmitted using a transmission power which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.

公开(公告)号：US08948093B2

公开(公告)日：2015-02-03

申请号：US12195114

申请日：2008-08-20

申请人： Hua Xu ,  Jianming Wu ,  Jianglei Ma ,  Ming Jia ,  Mohammadhadi Baligh ,  Peiying Zhu ,  Wen Tong

发明人： Hua Xu ,  Jianming Wu ,  Jianglei Ma ,  Ming Jia ,  Mohammadhadi Baligh ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04W4/00 ,  H04B7/06

CPC分类号： H04B7/0689 ,  H04B7/063 ,  H04B7/0632

摘要： To perform rank adaptation for a mobile station in a wireless network, it is determined whether the mobile station is fast moving. In response to determining that the mobile station is fast moving, an open loop multi-antenna mode is selected to perform wireless communication between the mobile station and a base station. Also, selection is made from among plural ranks for the wireless communication according to the open loop multi-antenna mode between the mobile station and the base station.

摘要翻译： 为了对无线网络中的移动台执行秩调整，确定移动站是否快速移动。 响应于确定移动台正在快速移动，选择开环多天线模式来执行移动台和基站之间的无线通信。 此外，根据移动台和基站之间的开环多天线模式，从用于无线通信的多个等级中进行选择。

公开(公告)号：US08774223B2

公开(公告)日：2014-07-08

申请号：US13616438

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： H04L27/28

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 bases 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.

公开(公告)号：US08699589B2

公开(公告)日：2014-04-15

申请号：US12830405

申请日：2010-07-05

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

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

IPC分类号： H04K1/10

CPC分类号： H04L25/0204 ,  H04L25/03343 ,  H04L25/03904 ,  H04L2025/03426 ,  H04L2025/03808

摘要： A system and method for multi-cell joint codebook feedback in wireless communications systems are provided. A method for operations at a communications device receiving joint transmissions from a plurality of communications controllers includes estimating a channel between the communications device and each communications controller in the plurality of communications controllers, thereby producing a plurality of channel estimates, computing feedback information based on the plurality of channel estimates, transmitting the feedback information, and receiving simultaneous transmissions from the plurality of communications controllers. The computing is based on a phase adjustment for the plurality of channels or a joint optimization of the plurality of channels, and the simultaneous transmissions are precoded based on the feedback information.

摘要翻译： 提供了一种用于无线通信系统中的多小区联合码本反馈的系统和方法。 一种用于在从多个通信控制器接收联合传输的通信设备处的操作的方法包括估计所述通信设备和所述多个通信控制器中的每个通信控制器之间的信道，由此产生多个信道估计，基于 多个信道估计，发送反馈信息，以及从多个通信控制器接收同时传输。 该计算基于多个信道的相位调整或多个信道的联合优化，并且基于反馈信息对同时传输进行预编码。

公开(公告)号：US08687480B2

公开(公告)日：2014-04-01

申请号：US12995206

申请日：2009-06-12

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

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

IPC分类号： H04J11/00 ,  H04B7/208 ,  H04W4/00 ,  H04L27/28 ,  H04B7/02

CPC分类号： H04L5/0058 ,  H04B7/0602 ,  H04B7/0671 ,  H04B7/2621 ,  H04J11/00 ,  H04L1/0003 ,  H04L1/0625 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0091 ,  H04L27/2615 ,  H04L27/2626 ,  H04L27/2636

摘要： The present application provides methods, devices and transmitters that mitigate increases in peak to average power ratio (PAPR) from transmission diversity in a single carrier frequency division multiple access (SC-FDMA) modulated uplink A PAPR preserving precode matrix hopping method that utilizes cyclic shift delays is provided, as well as a sub-band based transmit diversity scheme. The present application also provides methods, devices and transmitters that relax the scheduling restrictions associated with uplink scheduling in the LTE standard.

摘要翻译： 本申请提供了在单载波频分多址（SC-FDMA）调制上行链路PAPR保持预编码矩阵跳频方法中减轻峰均功率比（PAPR）从传输分集增加的方法，装置和发射机，其利用循环移位 提供延迟，以及基于子带的发射分集方案。 本申请还提供了放宽与LTE标准中的上行链路调度相关联的调度限制的方法，设备和发射机。

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。

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。

公开(公告)号：US08537782B2

公开(公告)日：2013-09-17

申请号：US13597921

申请日：2012-08-29

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.