公开(公告)号：US08873364B2

公开(公告)日：2014-10-28

申请号：US13745018

申请日：2013-01-18

Applicant: Kiran Kumar Kuchi ,  Bhaskar Ramamurthi ,  Karthik Kuntikana Shrikrishna

Inventor： Kiran Kumar Kuchi ,  Bhaskar Ramamurthi ,  Karthik Kuntikana Shrikrishna

IPC: H04J11/00 ,  H04L1/06 ,  H04B7/04

CPC classification number: H04B7/0413 ,  H04L1/0631 ,  H04L1/0656

Abstract: An Ordered Reduced Set Successive Detector (RSSD) for the V-BLAST spatial multiplexing scheme that uses a general two-dimensional non-uniform set partitioning for different symbols. The detector provides improved diversity and SNR gains at reduced complexity compared to a uniform set partitioning based detector. The detector can be used to reduce the complexity, with a small tradeoff in performance. Further, it is possible to obtain a quasi-ML performance using the disclosed detector at a reduced, yet fixed, complexity.

Abstract translation: 用于V-BLAST空间复用方案的有序简化集连续检测器（RSSD），其使用用于不同符号的通用二维非均匀集分配。 与基于均匀的基于分组的检测器相比，检测器以更低的复杂度提供改进的分集和SNR增益。 检测器可用于降低复杂性，在性能上有很小的折中。 此外，可以以简化但固定的复杂度使用所公开的检测器来获得准ML性能。

公开(公告)号：US20140211831A1

公开(公告)日：2014-07-31

申请号：US13751267

申请日：2013-01-28

Applicant: Guangxia Zhou ,  Wen Xu ,  Gerhard Bauch

Inventor： Guangxia Zhou ,  Wen Xu ,  Gerhard Bauch

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L1/0656 ,  H04L25/03891 ,  H04L27/0012

Abstract: A communication device is described comprising a receiver configured to receive a receive symbol vector resulting from a transmission of a transmit symbol vector from at least one transmitter to the receiver wherein the transmit symbol vector comprises a plurality of transmit symbols wherein each transmit symbol is associated with a modulation type and a detector configured to determine a detection order for the plurality of transmit symbols based on the modulation types and to determine, for at least one bit of at least one transmit symbol, at least one soft value based on the receive symbol vector according to the detection order.

Abstract translation: 描述了一种通信设备，其包括：接收机，被配置为接收从至少一个发射机到接收机的发射符号向量的传输产生的接收符号向量，其中所述发射符号向量包括多个发射符号，其中每个发射符号与 调制类型和检测器，被配置为基于调制类型确定多个发送符号的检测顺序，并且对于至少一个发送符号的至少一个比特来确定至少一个基于接收符号向量的软值 根据检测顺序。

公开(公告)号：US08775890B2

公开(公告)日：2014-07-08

申请号：US11575015

申请日：2004-09-13

Applicant: Choo Eng Yap ,  Lee Ying Loh

Inventor： Choo Eng Yap ,  Lee Ying Loh

IPC: H04L1/18

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重发请求控制系统包括：重发模式选择部，其从（a）通过与重发相同的天线发送要重发的数据的模式（a）中选择重发模式 先前的传输，同时通过使用不需要数据重传的天线同时发送新的数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US20140185703A1

公开(公告)日：2014-07-03

申请号：US14200803

申请日：2014-03-07

Applicant: SONY CORPORATION

Inventor： Shinichi Kuroda

IPC: H04L27/12

CPC classification number: H04L25/0224 ,  H04B7/0413 ,  H04B7/0421 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0619 ,  H04B7/0665 ,  H04B7/0854 ,  H04B7/0862 ,  H04L1/0656 ,  H04L25/0202 ,  H04L27/12 ,  H04L27/2601 ,  H04L2025/0377 ,  H04W72/0406

Abstract: In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.

Abstract translation: 在执行SVD-MIMO传输时，简化了建立过程，同时确保了具有减少数量的天线的令人满意的解码能力。 发射机基于从接收机发送的参考信号估计信道信息，基于信道信息确定发射天线加权系数矩阵，计算要分配给复用信号的每个分量的权重，并向接收机发送训练 对于各个信号分量的信号，训练信号由所计算的权重加权。 另一方面，接收机基于接收到的训练信号来确定接收天线加权系数矩阵。

公开(公告)号：US08767682B2

公开(公告)日：2014-07-01

申请号：US13620445

申请日：2012-09-14

Applicant: Mohammadhadi Baligh ,  Jiangei Ma ,  Hua Xu

Inventor： Mohammadhadi Baligh ,  Jiangei Ma ,  Hua Xu

IPC: H04W4/00 ,  H04L5/00 ,  H04L1/06 ,  H04B7/02 ,  H04B7/06 ,  H04B7/12 ,  H04L1/00 ,  H04W72/12

CPC classification number: H04B7/024 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/12 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0625 ,  H04L1/0656 ,  H04L1/0668 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/003 ,  H04L5/0035 ,  H04W72/1231

Abstract: In a cellular communications network comprising a plurality of transmitting sites wherein each transmitting site comprises at least one antenna, a method of serving a given data stream to a target-mobile terminal, comprising: designating at least two of the plurality of transmitting sites as cooperating sites; assigning tones to each transmitting site from a sub-band associated with the cooperating sites; dividing the data stream into at least two sub-data streams, each of the sub-data streams for transmission over selected tones; and interlacing tones of the cooperating sites in accordance with a selected one of a time switching and a frequency switching transmit diversity technique.

公开(公告)号：US08667344B2

公开(公告)日：2014-03-04

申请号：US13618906

申请日：2012-09-14

Applicant: Paul D. Marko

Inventor： Paul D. Marko

IPC: G06F11/00

CPC classification number: H04L1/0059 ,  H03M13/23 ,  H03M13/27 ,  H03M13/2936 ,  H03M13/3761 ,  H03M13/6362 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/0656 ,  H04L1/08

Abstract: A method and apparatus encode a source data stream via convolutional encoding or selected encoding scheme. Plural encoded data streams are interleaved and transmitted on a transmission channel. Data groups generated via convolutional or selected encoding are interleaved via time-interleaving functions to disperse selected bits within data groups, bits in between data groups, and bits in selected sets of data groups to facilitate reconstruction of the source data stream from at least a portion of the interleaved data stream received on at least one transmission channel. Subsets of bits of data groups are selected to allow reconstruction of the source data stream from more than one of plural transmission channels using a minimum number of subsets. Multiple combinations of subsets can be received on both transmission channels to reconstruct the source data stream following blockage of one channel.

Abstract translation: 一种通过卷积编码或选择的编码方案对源数据流进行编码的方法和装置。 多个编码数据流被交织并在传输信道上传输。 通过卷积或选择的编码生成的数据组经由时间交织功能进行交织，以分散数据组内的选定位，数据组之间的位，以及所选择的数据组组中的位，以便于从至少一部分重建源数据流 在至少一个传输信道上接收的交错数据流。 选择数据组的位的子集以允许使用最小数量的子集从多个传输信道中的多于一个重建源数据流。 可以在两个传输信道上接收子集的多个组合，以在一个信道被阻塞之后重构源数据流。

公开(公告)号：US08649251B2

公开(公告)日：2014-02-11

申请号：US13258600

申请日：2010-10-20

Applicant: Senbao Guo ,  Aihua Peng ,  Min Wei

Inventor： Senbao Guo ,  Aihua Peng ,  Min Wei

IPC: H04J11/00

CPC classification number: H04L1/0656 ,  H04L25/03343 ,  H04L2025/03426

Abstract: The present invention provides a method and apparatus for multi-user multiplexing. The method includes: a transmission apparatus performing layer mapping on data steams to be transmitted of an open-loop user and a close-loop user respectively; the transmission apparatus performing pre-coding processing on a layer data matrix of the open-loop user and the close-loop user obtained by the layer mapping; and the transmission apparatus mapping the layer data matrix after the pre-coding processing to a plurality of transmission antennas to be sent. The method of the present invention can improve frequency spectrum utilization ratio in the case of the a cell being full load or other possible scenarios, and its performance is better than the multiplexing of two close-loop users who are completely not suitable for pairing. Therefore, the method of the present invention is an optimal scheme adopted in some specified scenarios.

Abstract translation: 本发明提供一种用于多用户多路复用的方法和装置。 该方法包括：分别对开环用户和闭环用户发送的数据流进行层映射的发送装置; 所述发送装置对所述开放用户的层数据矩阵和通过所述层映射获取的所述闭环用户执行预编码处理; 以及将预编码处理之后的层数据矩阵映射到要发送的多个发送天线的发送装置。 本发明的方法可以提高小区满负荷情况下的频谱利用率，其性能优于完全不适合配对的两个闭环用户的复用。 因此，本发明的方法是在某些特定情况下采用的最佳方案。

公开(公告)号：US08638761B2

公开(公告)日：2014-01-28

申请号：US13253569

申请日：2011-10-05

Applicant: Mohammad Hossein Taghavi Nasrabadi ,  Vincent Knowles Jones ,  Didier Johannes Richard Van Nee ,  Geert Arnout Awater

Inventor： Mohammad Hossein Taghavi Nasrabadi ,  Vincent Knowles Jones ,  Didier Johannes Richard Van Nee ,  Geert Arnout Awater

IPC: H04B7/216

CPC classification number: H04L5/0023 ,  H04L1/0606 ,  H04L1/0656 ,  H04L5/0044

Abstract: Certain aspects of the present disclosure relate to systems, devices, and methods for communicating over a plurality of tones and spatial streams. Modulation symbols may be mapped to tones and spatial streams so as to increase frequency and/or spatial diversity without substantially increasing latency. For certain aspects, this interleaving approach may be performed on low-density parity-check (LDPC) codewords.

Abstract translation: 本公开的某些方面涉及用于通过多个音调和空间流进行通信的系统，设备和方法。 调制符号可以映射到音调和空间流，以便增加频率和/或空间分集，而不会显着增加等待时间。 对于某些方面，该交织方法可以在低密度奇偶校验（LDPC）码字上执行。

公开(公告)号：US08559386B2

公开(公告)日：2013-10-15

申请号：US13548476

申请日：2012-07-13

Applicant: Shinichi Kuroda

Inventor： Shinichi Kuroda

IPC: H04W4/00 ,  H04M1/00

CPC classification number: H04L25/0224 ,  H04B7/0413 ,  H04B7/0421 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0619 ,  H04B7/0665 ,  H04B7/0854 ,  H04B7/0862 ,  H04L1/0656 ,  H04L25/0202 ,  H04L27/12 ,  H04L27/2601 ,  H04L2025/0377 ,  H04W72/0406

Abstract: In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.

公开(公告)号：US08514963B2

公开(公告)日：2013-08-20

申请号：US12810638

申请日：2008-12-25

Applicant: Wataru Matsumoto ,  Shigeru Uchida ,  Toshiyuki Kuze ,  Hideo Yoshida

Inventor： Wataru Matsumoto ,  Shigeru Uchida ,  Toshiyuki Kuze ,  Hideo Yoshida

IPC: H04B7/02

CPC classification number: H04L1/1812 ,  H04B7/0413 ,  H04L1/0656 ,  H04L1/1816

Abstract: When an error correction decoding unit 26 of a data reception device 2 fails in error correction decoding of a codeword, an MIMO processing unit 15 of a data transmission device 1 deforms transmitted codewords according to a predetermined rule, and transmits the codewords, and the error correction decoding unit 26 of the data reception device 2 reproduces data by using the deformed codewords. As a result, not only the noise but the interference wave components can be reduced, and the success rates of the demodulation and error correction decoding can be improved greatly.

Abstract translation: 当数据接收装置2的纠错解码单元26对码字的纠错解码失败时，数据传输装置1的MIMO处理单元15根据预定规则使发送的码字变形，并发送码字，并且发送错误 数据接收装置2的校正解码单元26通过使用变形的码字再现数据。 结果，不仅可以降低噪声而且可以降低干扰波分量，而且可以大大提高解调和纠错解码的成功率。