公开(公告)号：US20190123851A1

公开(公告)日：2019-04-25

申请号：US16226309

申请日：2018-12-19

Applicant: Collision Communications, Inc.

Inventor： Brandon Hombs ,  Sayak Bose

IPC: H04L1/00 ,  H04L25/03

CPC classification number: H04L1/005 ,  H04L25/03968 ,  H04L2025/03356 ,  H04L2025/03611

Abstract: An improved receiver design implements a method for modeling users in SIC turbo loop multiuser detection architectures that reduces the number of implementation cycles, and thereby reduces the computational overhead associated with computing the inverse of the received signal covariance matrix, by efficiently reusing components of a QR decomposition. By reusing some of the computational results from the previous turbo loop's equalizer calculation, the disclosed receiver significantly reduces the computational burden of updating the linear equalizer on each turbo loop. Depending on the embodiment, this reduction can be accomplished in at least two different ways, depending on the dimensionality and other aspects of the implementation.

公开(公告)号：US09246564B2

公开(公告)日：2016-01-26

申请号：US14404122

申请日：2013-04-12

Applicant: NEC Corporation

Inventor： Yasushi Maruta ,  Duong Pham

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0473 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/006 ,  H04L25/03904 ,  H04L25/03968

Abstract: This method of generating precoders is used in optimising transmission capacity between an eNodeB and UEs in a DL MU-MIMO communication system. The method includes the steps of computing correlation values between pairs of precoding matrices (PMs) of the reported precoding matrix indicators (PMIs) (step 40), selecting a PM pair having a minimum correlation value (step 42). If the minimum correlation value is less than a lower threshold Tmin, the method uses a PM corresponding to the received PMI (step 44). If the minimum correlation value is greater than Tmin and less than an upper threshold Tmax, the method includes the steps of computing correlation values of the reported PMI and Channel Matrices (CMs) from a fixed codebook of representative CMs (step 48), selecting a CM pair having a maximum correlation value (step 52), and computing precoders from the selected CM pair (step 54).

Abstract translation: 这种生成预编码器的方法用于优化DL MU-MIMO通信系统中的eNodeB和UE之间的传输容量。 该方法包括以下步骤：计算报告的预编码矩阵指示符（PMI）的预编码矩阵（PM）对之间的相关值（步骤40），选择具有最小相关值的PM对（步骤42）。 如果最小相关值小于下限阈值Tmin，则该方法使用与接收到的PMI相对应的PM（步骤44）。 如果最小相关值大于Tmin且小于上阈值Tmax，则该方法包括以下步骤：从代表CM的固定码本计算所报告的PMI和信道矩阵（CM）的相关值（步骤48），选择 CM对具有最大相关值（步骤52），以及从所选择的CM对计算预编码器（步骤54）。

公开(公告)号：US09214995B2

公开(公告)日：2015-12-15

申请号：US14236229

申请日：2011-08-01

Applicant: Amin Mobasher

Inventor： Alireza Bayesteh ,  Amin Mobasher ,  Shiguang Guo

IPC: H04B7/04 ,  H04B7/06 ,  H04L25/02 ,  H04L25/03 ,  H04W36/20 ,  H04L5/00

CPC classification number: H04B7/0482 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0391 ,  H04L25/03968 ,  H04W36/20

Abstract: Systems and methods can implemented to joint transmission for interference management in wireless communications. A first transmitter having M antennas can acquire a channel state information (CSI) matrix for each of a plurality of multiple-input-multiple output (MIMO) channels between a first transmitter and a plurality of receivers. The first transmitter can determine transmission ranks, wherein each of the transmission ranks corresponds to a number of one or more data streams to be transmitted from both the first transmitter and a second transmitter to a receiver of the plurality of receivers. A maximum transmission rank may be identified from the determined transmission ranks. Transmit data can be generated that include the one or more data streams to each of the corresponding plurality of receivers. A precoding matrix can be generated for the generated transmit data based, at least in part, on the acquired CSI matrix. The first transmitter can then encode the transmit data using the corresponding generated precoding matrix.

Abstract translation: 系统和方法可以实现用于联合传输用于无线通信中的干扰管理。 具有M个天线的第一发射机可以获取第一发射机和多个接收机之间的多个多输入多输出（MIMO）信道中的每一个的信道状态信息（CSI）矩阵。 第一发射机可以确定传输级别，其中每个传输级别对应于要从第一发射机和第二发射机两者发送到多个接收机的接收机的一个或多个数据流的数量。 可以从确定的传输等级识别最大传输等级。 可以生成包括到相应的多个接收器中的每一个的一个或多个数据流的发送数据。 至少部分地基于所获取的CSI矩阵，可以为所生成的发送数据生成预编码矩阵。 然后，第一发射机可以使用相应的生成的预编码矩阵对发射数据进行编码。

公开(公告)号：US09112743B1

公开(公告)日：2015-08-18

申请号：US14620177

申请日：2015-02-11

Applicant: Panasonic Corporation

Inventor： Yoshinori Shirakawa ,  Naganori Shirakata ,  Koichiro Tanaka ,  Hiroyuki Motozuka

IPC: H04L25/03 ,  H04L25/02 ,  H04B1/12 ,  H04L27/26

CPC classification number: H04L27/265 ,  H04B1/123 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L25/03968

Abstract: An equalization method includes carrying out frequency domain conversion of M received signals into a 2M received vector having 2M elements, carrying out channel estimation and noise/interference estimation based on the 2M vector, calculating a 2M channel vector and a (2M)×(2M) noise/interference matrix, selecting a 2M−1 or less channel vector from the calculated 2M channel vector, selecting a (2M−1)×(2M−1) or less noise/interference matrix from the calculated (2M)×(2M) noise/interference matrix, calculating a 2M−1 or less equalization coefficient vector as equalization coefficients based on the selected 2M−1 channel vector and the selected (2M−1)×(2M−1) noise/interference matrix, selecting a 2M−1 or less received vector from the 2M received vector, and equalizing the selected 2M−1 received vector by using the calculated. equalization coefficients.

Abstract translation: 一种均衡方法包括：将M个接收信号的频域转换为具有2M个元素的2M接收向量，基于2M向量执行信道估计和噪声/干扰估计，计算2M信道向量和（2M）×（2M ）从所计算的2M信道向量中选择2M-1或更少的信道向量，从所计算的（2M）×（2M）的噪声/干扰矩阵中选择（2M-1）×（2M-1） ）噪声/干扰矩阵，基于所选择的2M-1信道向量和所选择的（2M-1）×（2M-1）个噪声/干扰矩阵，计算2M-1或更小的均衡系数向量作为均衡系数，选择2M -1或更小的接收向量，并且通过使用所计算的来均衡所选择的2M-1个接收向量。 均衡系数。

公开(公告)号：US08971384B2

公开(公告)日：2015-03-03

申请号：US14262259

申请日：2014-04-25

Applicant: Futurewei Technologies, Inc.

Inventor： Hamidreza Farmanbar ,  Aaron Callard ,  Mohammadhadi Baligh

IPC: H04B1/00 ,  H04W24/02 ,  H04B7/04 ,  H04B7/08 ,  H04L25/03 ,  H04L1/00

CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/086 ,  H04L1/0003 ,  H04L1/0009 ,  H04L25/03343 ,  H04L25/03891 ,  H04L25/03968

Abstract: Method and apparatus for decoding a transmitted signal by a receiver in a MIMO system into a first estimate component for estimating a first signal, a first interference component indicating interference resulting from a correlation relationship among a set of signals to be transmitted, and a first noise component. A base station generates the transmitted signal from the set of signals through a coding process, the coding process defining a correlation relationship amongst the set of signals. The correlation information about the correlation relationship is transmitted to the receiver directly or by a dedicated reference symbol. The decoding is performed by determining a linear receiver filter for the first signal in accordance with the correlation information, and de-correlating the first signal and interferences.

Abstract translation: 用于将MIMO系统中的接收机的发送信号解码成用于估计第一信号的第一估计分量的方法和装置，指示由要发送的一组信号之间的相关关系产生的干扰的第一干扰分量和第一噪声 零件。 基站通过编码处理从该组信号生成发送的信号，该编码处理定义该组信号之间的相关关系。 关于相关关系的相关信息被直接地或通过专用参考符号发送到接收器。 通过根据相关信息确定用于第一信号的线性接收机滤波器，并且对第一信号和干扰进行去相关，来执行解码。

公开(公告)号：US20140334561A1

公开(公告)日：2014-11-13

申请号：US13892431

申请日：2013-05-13

Applicant: BlackBerry Limited

Inventor： Yangwen LIANG ,  Ali NEZAMPOUR MEYMANDI ,  Jianfeng WENG ,  Martin Geoffrey LEACH

IPC: H04L25/02

CPC classification number: H04L25/0204 ,  H04L25/03178 ,  H04L25/03891 ,  H04L25/03968 ,  H04L2025/03426

Abstract: This application proposes using successive interference cancellation with an ordered matrix decomposition coupled with a search based ordered layer detection technique. The search based ordered layer detection technique is used to consider a plurality of hypothesis decision estimates for detection of symbols in multiple data streams.

Abstract translation: 该应用提出使用与基于搜索的有序层检测技术相结合的有序矩阵分解的连续干扰消除。 基于搜索的有序层检测技术被用于考虑用于检测多个数据流中的符号的多个假设判定估计。

公开(公告)号：US20120218947A1

公开(公告)日：2012-08-30

申请号：US13219531

申请日：2011-08-26

Applicant: Simone Merlin ,  Santosh Paul Abraham

Inventor： Simone Merlin ,  Santosh Paul Abraham

IPC: H04W72/00

CPC classification number: H04L25/03343 ,  H04L5/0023 ,  H04L5/0064 ,  H04L25/021 ,  H04L25/0248 ,  H04L25/03968 ,  H04L2025/03426 ,  H04W74/00

Abstract: Certain aspects of the present disclosure relate to a technique for multiplexing data of different access categories in Multi User Multiple Input Multiple Output (MU-MIMO) wireless systems. The present disclosure defines rules for multiplexing data of an access category that did not win the contention together with data that won the contention. In this way, a desired Quality of Service (QoS) of each access category class can be preserved.

Abstract translation: 本公开的某些方面涉及在多用户多输入多输出（MU-MIMO）无线系统中复用不同接入类别的数据的技术。 本公开定义了用于复制未获得争用的访问类别的数据以及赢得争用的数据的规则。 以这种方式，可以保持每个访问类别类的期望的服务质量（QoS）。

公开(公告)号：US08059761B2

公开(公告)日：2011-11-15

申请号：US12170474

申请日：2008-07-10

Applicant: Kiarash Amiri ,  Christopher H. Dick ,  Raghavendar Mysore Rao ,  Joseph R. Cavallaro

Inventor： Kiarash Amiri ,  Christopher H. Dick ,  Raghavendar Mysore Rao ,  Joseph R. Cavallaro

IPC: H04L27/06

CPC classification number: H04L25/03229 ,  H04L25/0246 ,  H04L25/03968

Abstract: Circuits detect communications from multiple transmitting antennas to multiple receiving antennas. A respective first block for each non-initial transmitting antenna determines partial distances for pairings of a first candidate and a quadrature-phase amplitude. A respective second block for the initial transmitting antenna determines partial distances for combinations of phase amplitudes. A respective second block for each non-initial transmitting antenna determines partial distances for pairings of a second candidate and an in-phase amplitude. A respective first selector for each non-initial transmitting antenna selects the first candidates from the pairings for the respective second block having smaller partial distances. A respective second selector for each non-initial transmitting antenna selects the second candidates from the pairings for the respective first block having smaller partial distances. An identifier circuit selects a final candidate with a smaller partial distance from the pairings of the respective second block for the last transmitting antenna.

Abstract translation: 电路检测从多个发射天线到多个接收天线的通信。 每个非初始发射天线的相应的第一块确定用于第一候选和正交相位振幅的配对的部分距离。 用于初始发射天线的相应的第二块确定相位振幅的组合的部分距离。 每个非初始发射天线的相应的第二块确定第二候选的配对和同相幅度的部分距离。 每个非初始发射天线的相应的第一选择器从具有较小部分距离的相应第二块的配对中选择第一候选。 每个非初始发射天线的相应的第二选择器从具有较小部分距离的相应第一块的配对中选择第二候选。 标识符电路从最后发射天线的相应第二块的配对中选择具有较小部分距离的最终候选。

公开(公告)号：US20110142181A1

公开(公告)日：2011-06-16

申请号：US12942352

申请日：2010-11-09

Applicant: Amir Leshem ,  Jacob Goldberger

Inventor： Amir Leshem ,  Jacob Goldberger

IPC: H04L27/06

CPC classification number: H04L25/03318 ,  H04L25/03968 ,  H04L2025/03426

Abstract: A communication system having a program of machine-readable instructions for solving an ILS problem, tangibly embodied on a computer readable memory and executable by a digital data processor, to perform actions directed toward outputting a set of a-posteriori probability vectors.

Abstract translation: 一种具有用于解决ILS问题的机读指令程序的通信系统，其有形地体现在计算机可读存储器上并由数字数据处理器执行，以执行用于输出一组后验概率向量的动作。

公开(公告)号：US20110116581A1

公开(公告)日：2011-05-19

申请号：US13003925

申请日：2009-07-24

Applicant: Ryota Yamada ,  Takashi Yoshimoto ,  Kazuyuki Shimezawa

Inventor： Ryota Yamada ,  Takashi Yoshimoto ,  Kazuyuki Shimezawa

IPC: H04L27/06 ,  H04B7/02

CPC classification number: H04B7/0413 ,  H04B7/0854 ,  H04J11/0063 ,  H04L25/03292 ,  H04L25/03318 ,  H04L25/03968 ,  H04L27/2647

Abstract: A reception device, which communicates with a transmission device having multiple transmission antennas, includes: at least one reception antenna which receives multiple transmission signals that are transmitted from the multiple transmission antennas by the transmission device; a Fourier transform unit which transforms the signals received by the reception antenna from a time domain into a frequency domain; a propagation channel estimating unit which calculates propagation channel estimation values by estimating propagation channels between the multiple transmission antennas and the reception antenna; and a signal detecting unit which detects the multiple transmission signals by dividing multipaths from the signals that are transformed into the frequency domain by the Fourier transform unit.

Abstract translation: 与具有多个发送天线的发送装置通信的接收装置包括：至少一个接收天线，其接收由所述发送装置从所述多个发送天线发送的多个发送信号; 傅立叶变换单元，将由接收天线接收的信号从时域变换为频域; 传播路径估计单元，其通过估计所述多个发送天线与所述接收天线之间的传播路径来计算传播路径估计值; 以及信号检测单元，其通过由通过傅里叶变换单元将经过变换成频域的信号分割多路径来检测多个发送信号。