公开(公告)号：WO2019141353A1

公开(公告)日：2019-07-25

申请号：PCT/EP2018/051048

申请日：2018-01-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  SIDI, Alon

Inventor： SIDI, Alon

IPC: H04L25/03 ,  H04L25/02 ,  H04B7/0413

CPC classification number: H04L25/03006 ,  H04B7/0413 ,  H04B7/0848 ,  H04L25/0242 ,  H04L2025/03426

Abstract: The present invention provides signal decoder 100 for determining the QR decomposition of an M x N input matrix (H), with M≥ N, with a product of an M x N orthonormal matrix (Q) and an N x N upper triangular matrix (R). The signal decoder 100 is configured to calculate a conjugated transposed matrix (H H ) of the input matrix (H) and to calculate a Hermitian matrix (G) by multiplying the conjugated transposed matrix (H H ) of the input matrix (H) and the input matrix (H) in the form G = H H H. Further, the signal decoder 100 is configured to provide an augmented N x (M + N) matrix (K 0 ) having as a left matrix the matrix (I) and as a right matrix the matrix (II), and to multiply the augmented matrix (K 0 ) from the left with a series of lower triangular matrices (A k ) where k ranges from 0 to (N— 1).

公开(公告)号：WO2017044938A1

公开(公告)日：2017-03-16

申请号：PCT/US2016/051280

申请日：2016-09-12

Applicant: MARVELL WORLD TRADE LTD. ,  SUN, Yakun ,  ZHANG, Hongyuan ,  SRINIVASA, Sudhir ,  ZHENG, Xiayu

Inventor： SUN, Yakun ,  ZHANG, Hongyuan ,  SRINIVASA, Sudhir ,  ZHENG, Xiayu

IPC: H04B7/04 ,  H04L27/26

CPC classification number: H04W28/06 ,  H04B7/04 ,  H04B7/0617 ,  H04L25/0242 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2646 ,  H04W84/12

Abstract: Some embodiments described herein provide a method for transmitting a preamble in accordance with a wireless local area network communication protocol. In some embodiments, a data frame may be obtained for transmission including a preamble compliant with the wireless local area network communication protocol. It may be determined that the preamble includes a first preamble portion that spans multiple symbol durations and a second preamble portion that spans a single symbol duration. The first preamble portion via beamforming may be transmitted based on a first beamforming matrix. When a transmission mode of the second preamble portion is beamforming, a second beamforming matrix may be generated based on the first beamforming matrix, each tone for the second preamble portion may be calculated based on the second beamforming matrix. Each calculated tone may be transmitted in accordance with the wireless local area network communication protocol.

Abstract translation: 本文描述的一些实施例提供了一种根据无线局域网通信协议来发送前同步码的方法。 在一些实施例中，可以获得包括符合无线局域网通信协议的前导码的传输的数据帧。 可以确定前导码包括跨越多个符号持续时间的第一前导码部分和跨越单个符号持续时间的第二前导码部分。 可以基于第一波束形成矩阵来发射通过波束成形的第一前导码部分。 当第二前导码部分的传输模式是波束形成时，可以基于第一波束形成矩阵来生成第二波束形成矩阵，可以基于第二波束成形矩阵来计算第二前导码部分的每个音调。 可以根据无线局域网通信协议来发送每个计算的音调。

公开(公告)号：WO2016210171A1

公开(公告)日：2016-12-29

申请号：PCT/US2016/039078

申请日：2016-06-23

Applicant: IKANOS COMMUNICATIONS, INC.

Inventor： PAL, Debajyoti ,  SINGH, Shailendra

IPC: H04B3/32

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04L12/2878 ,  H04L25/0202 ,  H04L25/0242 ,  H04M3/007 ,  H04M3/2209 ,  H04M11/062 ,  H04Q2201/14 ,  H04Q2213/1336

Abstract: Methods, systems, and devices are described for wired communication. In one aspect, a distribution point may use a redundant number of digital subscriber line (DSL) lines that share a same cable binder to cancel crosstalk. For example a first distribution point may use a redundant number of lines, which may be virtualized lines, to cancel interference between lines controlled by the first distribution point and lines controlled by a second distribution point. In some cases, a distribution point may share precoding and cancelling coefficients with another distribution point over a cloud network or other service to enable vectoring without sharing transmitted data between the two distribution points. That is, the first distribution point may receive information related to crosstalk between sets of CPEs without receiving data transmitted by a separate distribution point sharing the same cable binder, and use the crosstalk related information to cancel crosstalk.

Abstract translation: 描述了有线通信的方法，系统和设备。 在一个方面，分发点可以使用共享相同电缆绑扎器的冗余数量的数字用户线（DSL）线路来消除串扰。 例如，第一分发点可以使用冗余数量的线路，其可以是虚拟线路，以消除由第一分发点控制的线路和由第二分配点控制的线路之间的干扰。 在一些情况下，分发点可以通过云网络或其他服务与另一分发点共享预编码和取消系数，以实现向量化而不在两个分发点之间共享传输的数据。 也就是说，第一分发点可以接收与CPE组之间的串扰相关的信息，而不接收由共享相同电缆绑带的单独分配点发送的数据，并且使用串扰相关信息来消除串扰。

公开(公告)号：WO2016192619A1

公开(公告)日：2016-12-08

申请号：PCT/CN2016/084154

申请日：2016-05-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： TAROKH, Vahid ,  ZHU, Peiying ,  TONG, Wen

IPC: H04W24/08

CPC classification number: H04L1/0054 ,  H04J13/00 ,  H04L1/0048 ,  H04L25/0242

Abstract: A base station communicates with a plurality of user equipments (UEs) using a method. The method includes receiving, by the base station, a plurality of signals from a plurality of user equipments (UE) in communication with the base station. The method also includes using an iterative algorithm to estimate a matrix Λ of channel coefficients based on the received signals. The method further includes decoding, at the base station, the received signals using the estimated matrix Λ.

Abstract translation: 基站使用一种方法与多个用户设备（UE）进行通信。 该方法包括：从基站接收来自与基站通信的多个用户设备（UE）的多个信号。 该方法还包括使用迭代算法基于接收到的信号来估计信道系数的矩阵Λ。 该方法还包括在基站处使用估计矩阵Λ解码接收信号。

公开(公告)号：WO2016127939A1

公开(公告)日：2016-08-18

申请号：PCT/CN2016/073736

申请日：2016-02-09

Applicant: QUALCOMM INCORPORATED ,  WEI, Chao ,  CHEN, Wanshi ,  GAAL, Peter ,  LI, Guodong ,  HOU, Jilei

Inventor： WEI, Chao ,  CHEN, Wanshi ,  GAAL, Peter ,  LI, Guodong ,  HOU, Jilei

IPC: H04L27/26 ,  H04W88/08

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/0048 ,  H04L25/0242 ,  H04W72/0453 ,  H04W72/1289

Abstract: Certain aspects of the present disclosure supportdemodulation reference signal (DMRS) enhancement for higher order multi-user multiple-input multiple-output (MU-MIMO) communications. An example method generally includes determining a plurality of ports of a multi-dimensional array of transmit antennas and a number of spatial multiplexed layers for transmission to a plurality of user equipments (UEs), configuring a demodulation reference signal (DMRS) pattern by multiplexing the layers or the ports in the DMRS pattern, using an orthogonal cover code (OCC) and one or more code division multiplexing (CDM) groups, and transmitting DMRS symbols based on the configured DMRS pattern using the multiplexed layers and the ports.

Abstract translation: 本公开的某些方面支持用于高阶多用户多输入多输出（MU-MIMO）通信的支持调制参考信号（DMRS）增强。 示例性方法通常包括确定发射天线的多维阵列的多个端口和用于传输到多个用户设备（UE）的多个空间复用层，通过多路复用来配置解调参考信号（DMRS）模式 层或DMRS模式中的端口，使用正交覆盖码（OCC）和一个或多个码分复用（CDM）组，并且使用多路复用层和端口基于配置的DMRS模式发送DMRS符号。

公开(公告)号：WO2016111524A1

公开(公告)日：2016-07-14

申请号：PCT/KR2016/000056

申请日：2016-01-05

Applicant: 엘지전자 주식회사

Inventor： 김봉회 ,  김기준 ,  김형태 ,  박종현

IPC: H04L25/02 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04L25/0242 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/065 ,  H04B7/10 ,  H04L5/00 ,  H04L25/02 ,  H04L25/0204 ,  H04L25/0228

Abstract: 본 발명의 일 실시예에 따른 무선 통신 시스템에서 기지국이 채널을 추정하는 방법은, 단말로부터 수신한 SRS(sounding reference signal)를 이용하여 상향링크 채널 행렬을 획득하는 단계; 상기 기지국의 2차원 안테나 어레이에서 적어도 일부의 안테나 소자들을 통해서 CSI-RS(channel state information-reference signal)를 전송하는 단계; 상기 CSI-RS의 전송에 기초하여 계산된 CQI(channel quality indicator)를 수신하는 단계; 및 상기 CQI에 기초하여 획득된 소정의 보정 인자(correction factor) 및 상기 상향링크 채널 행렬을 통해서, 상기 CSI-RS가 전송되지 않은 나머지 안테나 소자들을 포함하는 상기 2차원 안테나 어레이 전체에 대한 하향링크 채널 행렬을 획득하는 단계를 포함한다.

Abstract translation: 根据本发明的实施例的用于在无线通信系统中的基站估计信道状态的方法包括以下步骤：通过使用从终端接收的探测参考信号（SRS）获得上行链路信道矩阵; 通过所述基站的二维天线阵列中的至少一些天线装置发送信道状态信息参考信号（CSI-RS）; 接收基于CSI-RS传输计算的信道质量指示符（CQI）; 并且通过基于CQI和上行链路信道矩阵获得的预定校正因子获得包括不发送CSI-RS的剩余天线装置的整个二维天线阵列的下行链路信道矩阵。

公开(公告)号：WO2015109783A1

公开(公告)日：2015-07-30

申请号：PCT/CN2014/082333

申请日：2014-07-16

Applicant: 中兴通讯股份有限公司

Inventor： 侯晓辉

IPC: H04L25/02

CPC classification number: H04L25/0204 ,  H04L25/0224 ,  H04L25/0242

Abstract: 本发明实施例公开了一种信道估计方法、装置、基站及计算机存储介质；所述方法包括：确定训练序列矩阵S；确定成形矩阵G；确定接收信号；根据所述训练序列矩阵S、所述成形矩阵G和所述接收信号，确定空口无线信道的估计c̃；根据成形矩阵G和空口无线信道的估计c̃确定合成的无线信道的估计。

公开(公告)号：WO2015081107A1

公开(公告)日：2015-06-04

申请号：PCT/US2014/067426

申请日：2014-11-25

Applicant: PLUSN, LLC

Inventor： TERRY, John, David

IPC: H04L27/26 ,  H04L25/02

CPC classification number: H04L27/2614 ,  H04J11/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0242 ,  H04L27/2607 ,  H04L27/2618 ,  H04L27/2621 ,  H04L27/2624 ,  H04L27/2626 ,  H04L27/2649 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/367 ,  H04L45/24 ,  H04W84/12

Abstract: A system and method for aggregation of a plurality of wireless communication signals in a common radio frequency transmitter. A multiple subchannel multiplexed (MSM) signal within a frequency band, and having a communication protocol with pilot signals estimating a channel state and efficient signal demodulation with a mobile receiver is combined with another signal. An automated digital processor at the transmitter modifies the MSM to meet at least one fitness criterion of the combined signal, selected from among alternatives that will maintain good reception of all transmitted signals within system protocols, without requiring transmitting additional side information specifying the modification. The range of alternates include modifications that disrupt the pilot signals. The fitness criterion may include minimizing the peak-to-average power ratio of the combination, and a signal modification may comprise a cyclic permutation of a portion of the time-domain representation of a signal, while maintaining compatibility with prior pilot signals

Abstract translation: 一种用于在公共射频发射机中聚合多个无线通信信号的系统和方法。 频域内的多个子信道多路复用（MSM）信号与具有估计信道状态的导频信号和与移动接收机的有效信号解调的通信协议与另一个信号组合在一起。 在发射机处的自动数字处理器修改MSM，以满足组合信号的至少一个适应性标准，从在系统协议内保持所有发射信号的良好接收的替代方案中选出，而不需要发送指定修改的附加侧信息。 替代的范围包括中断导频信号的修改。 适应度标准可以包括最小化组合的峰均功率比，并且信号修改可以包括信号的时域表示的一部分的循环置换，同时保持与先前导频信号的兼容性

公开(公告)号：WO2015072904A1

公开(公告)日：2015-05-21

申请号：PCT/SE2014/050941

申请日：2014-08-15

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： GATTAMI, Ather

IPC: H04L1/12 ,  H03H17/02 ,  H03H21/00

CPC classification number: H04W4/70 ,  H03H17/0257 ,  H03H21/003 ,  H04L1/12 ,  H04L25/0242 ,  H04L25/0258

Abstract: Encoding and decoding schemes at an encoding device/transmitter and decoder device/receiver, respectively, for use in communicating the state of a system. In an example method carried out by an encoding device, state information x(k), which represents the current state of a monitored system, is measured. The encoding device calculates a state update parameter, based on: a message power constraint P; the covariance N of measurement noise associated with the channel over which encoded state information is to be transmitted; and the norm of the signal vector [s(k), x(k)], where s(k) is a stored state information parameter. The encoding device then calculates a message signal z(k) = G(k)*(x(k) –s(k)), which may then be transmitted to a remote decoder device, and calculates an updated version of the stored information s(k+1) = A*(s(k) + F(k)*z(k)). The encoding device replaces the stored state information s(k) with s(k+1).

Abstract translation: 分别用于传达系统状态的编码设备/发射机和解码器设备/接收机处的编码和解码方案。 在由编码装置执行的示例性方法中，测量表示被监视系统的当前状态的状态信息x（k）。 编码装置根据消息功率约束P计算状态更新参数; 与要传输编码状态信息的信道相关联的测量噪声的协方差N; 和信号向量[s（k），x（k）]的范数，其中s（k）是存储状态信息参数。 然后，编码装置计算消息信号z（k）= G（k）*（x（k）-s（k）），然后将其发送到远程解码器装置，并计算已存储信息的更新版本 s（k + 1）= A *（s（k）+ F（k）* z（k））。 编码装置用s（k + 1）取代所存储的状态信息s（k）。

公开(公告)号：WO2015018740A1

公开(公告)日：2015-02-12

申请号：PCT/EP2014/066525

申请日：2014-07-31

Applicant: ALCATEL LUCENT

Inventor： NUZMAN, Carl ,  VANDERHAEGEN, Dirk

IPC: H04B3/32 ,  H04B3/46 ,  H04M3/34 ,  H04L25/08 ,  H04M11/06

CPC classification number: H04B3/487 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/023 ,  H04L25/0242 ,  H04M3/306 ,  H04M3/34

Abstract: The present invention relates to a method and apparatus for estimating at least one crosstalk coefficient at a given carrier frequency (k) from at least one respective disturber line (Lm) towards a victim line (Ln) of a vectoring group. At least one crosstalk probing sequence (Smt (k) ) out of a set of orthogonal crosstalk probing sequences (131) is assigned to the at least one respective disturber line for modulation at the given carrier frequency of at least one respective sequence of crosstalk probing symbols, and error samples (Ent (k) ) as successively measured by a receiver (210n) coupled to the victim line at the given carrier frequency while the at least one sequence of crosstalk probing symbols are being transmitted over the at least one respective disturber line are fed back for crosstalk estimation. The receive d error samples are next correlated with at least one unassigned crosstalk probing sequence (Tmt (k) ) out of the set of orthogonal crosstalk probing sequences for detection of a demapping error in the received error samples. The at least one unassigned crosstalk probing sequence is not actively used by any line of the vectoring group during the transmission of the at least one sequence of crosstalk probing symbols over the at least one respective disturber line.

Abstract translation: 本发明涉及一种用于从给定载波频率（k）估计至少一个相应干扰线（Lm）朝向向量组的受害线路（Ln）的至少一个串扰系数的方法和装置。 一组正交串扰探测序列（131）中的至少一个串扰探测序列（Smt（k））被分配给至少一个相应干扰线，用于在至少一个相应串扰探测序列的给定载波频率处进行调制 符号和错误样本（Ent（k）），其由在所述给定载波频率处耦合到所述受害线路的接收机（210n）连续测量，同时所述至少一个串扰探测符号序列正在所述至少一个相应干扰器 线反馈用于串扰估计。 接收d个误差样本接下来与用于检测接收到的误差样本中的解映射误差的正交串扰探测序列组中的至少一个未分配串扰探测序列（Tmt（k））相关联。 所述至少一个未分配的串扰探测序列在所述至少一个相应干扰线路中的所述至少一个串扰探测符号序列的传输期间不被所述矢量组的任何线主动使用。