公开(公告)号：US07474641B2

公开(公告)日：2009-01-06

申请号：US10922911

申请日：2004-08-23

Applicant: Shinichi Kuroda

Inventor： Shinichi Kuroda

IPC: H04Q7/00 ,  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.

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：US20080317014A1

公开(公告)日：2008-12-25

申请号：US11766245

申请日：2007-06-21

Applicant: Nenad VESELINOVIC ,  Juha YLITALO

Inventor： Nenad VESELINOVIC ,  Juha YLITALO

IPC: H04L12/50

CPC classification number: H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0656

Abstract: The selection of the spatial mode together with modulation and encoding schemes based on channel condition measurements requested from MS forms a basis for selecting a best transmission data rate in a wireless link in every channel conditions. A method and network element comprising multiple-input multiple-output (MIMO) capable antenna technology allows the use of a best transmission data rate in the channel if selection of transmission mode has been made correctly. The thresholds for transmission mode selections are pre-determined and compared to instantaneous channel quality information. The practical MIMO solution based on correct selection procedure provides also continuous sufficient channel condition for terminal users when the user moves from LOS situation to NLOS situation.

Abstract translation: 基于从MS请求的信道条件测量，空间模式的选择以及调制和编码方案构成了在每个信道条件下选择无线链路中的最佳传输数据速率的基础。 包括多输入多输出（MIMO）能力的天线技术的方法和网络元件允许在正确地进行传输模式的选择时在信道中使用最佳的传输数据速率。 传输模式选择的阈值是预先确定的，并与瞬时信道质量信息进行比较。 基于正确选择过程的实际MIMO解决方案，在用户从LOS情况转移到NLOS情况时，为终端用户提供连续充足的信道条件。

公开(公告)号：US20080219376A1

公开(公告)日：2008-09-11

申请号：US11714433

申请日：2007-03-05

Applicant: Xiao-Feng Qi ,  Keith Holt

Inventor： Xiao-Feng Qi ,  Keith Holt

IPC: H04B15/00

CPC classification number: H04B7/0417 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0656

Abstract: Systems and methods for utilizing new communication standards in wireless local area networks are provided that also support legacy wireless stations. The method can include user equipment determining channel state information, selecting a unitary channel decomposition precoder format based on the determined channel state information and transmitting the precoder format information to a base station. During a return transmission the user equipment can receive user data with the precoder format information and utilize a non-linear detector to demodulate and decode the user data. Based on the reception the user equipment can estimate channel quality; and transmitting channel quality information as feedback.

Abstract translation: 提供了在无线局域网中利用新通信标准的系统和方法，其还支持传统无线站。 该方法可以包括用户设备确定信道状态信息，基于所确定的信道状态信息选择酉信道分解预编码器格式，并将预编码器格式信息发送到基站。 在返回传输期间，用户设备可以利用预编码器格式信息接收用户数据，并利用非线性检测器对用户数据进行解调和解码。 基于接收，用户设备可以估计信道质量; 并且传输信道质量信息作为反馈。

公开(公告)号：US20080212714A1

公开(公告)日：2008-09-04

申请号：US11893636

申请日：2007-08-17

Applicant: Mahesh K. Varanasi ,  Yi Jiang

Inventor： Mahesh K. Varanasi ,  Yi Jiang

IPC: H04L27/00

CPC classification number: H04L25/03343 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/066 ,  H04B7/0669 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/0656 ,  H04L1/0675 ,  H04L1/1812 ,  H04L2025/03426

Abstract: A spatial multiplexing architecture is described for a MIMO communications system wherein the receiver feeds a number of bits of channel state information back to the transmitter. The architecture includes jointly designed ordered detection at the receiver and rate/power allocation at the transmitter. The receiver feeds back a finite number of bits to the transmitter regarding the detection order. The transmitter utilizes this detection order information to assign rates and powers. A Greedy ordering Rate Tailored (GRT-SMA) scheme is described which includes independent coding/decoding on each layer.

Abstract translation: 描述了MIMO通信系统的空间复用架构，其中接收机将多个信道状态信息的比特馈送给发射机。 该架构包括在接收机处共同设计的有序检测和发射机的速率/功率分配。 接收机将有限数量的比特反馈给发射机关于检测顺序。 发射机利用该检测顺序信息分配速率和功率。 描述了一种贪婪定制速率（GRT-SMA）方案，其包括在每个层上的独立编码/解码。

公开(公告)号：US07336719B2

公开(公告)日：2008-02-26

申请号：US09999438

申请日：2001-11-28

Applicant: Dhananjay Gore ,  Sumeet Sandhu ,  Shilpa Talwar ,  Arogyaswami J. Paulraj

Inventor： Dhananjay Gore ,  Sumeet Sandhu ,  Shilpa Talwar ,  Arogyaswami J. Paulraj

IPC: H04B7/02

CPC classification number: H04B7/0615 ,  H04L1/0656

Abstract: The present invention provides a diversity transmission system. The diversity transmission system includes a method and system of diversity transmission through a wireless channel formed between multiple transmission antennae of a transceiver and a subscriber unit. The method includes forming a stream of symbols from an incoming data stream. A plurality of the symbols are selected forming a data vector. A maximum delay spread through the wireless channel is determined. The maximum delay spread is generally determined as a multiple of a sample time spacing between elements of the data vector. A plurality of diversity vectors are generated based upon the data vector and the maximum delay spread, each diversity vector includes a plurality of elements. Corresponding elements of the diversity vectors are simultaneously transmitted, each diversity vector transmitted from at least one corresponding antenna of a plurality of spatially separate antennae. This embodiment can further include repeatedly simultaneously transmitting corresponding elements of the diversity vectors until all elements of the diversity vectors have been transmitted, each diversity vector transmitted from at least one corresponding antenna of a plurality of spatially separate antennae.

Abstract translation: 本发明提供一种分集传输系统。 分集传输系统包括通过在收发机的多个发射天线和用户单元之间形成的无线信道的分集传输的方法和系统。 该方法包括从输入数据流形成符号流。 选择形成数据矢量的多个符号。 确定通过无线信道扩展的最大延迟。 最大延迟扩展通常被确定为数据向量的元素之间的采样时间间隔的倍数。 基于数据矢量和最大延迟扩展来生成多个分集向量，每个分集向量包括多个元素。 同时发送分集向量的相应元素，每个分集向量从多个空间分离的天线中的至少一个对应的天线发送。 该实施例还可以包括重复同时发送分集向量的相应元素，直到已经发送了分集向量的所有元素，每个分集向量从多个空间分离的天线中的至少一个对应的天线发送。

公开(公告)号：US20080037677A1

公开(公告)日：2008-02-14

申请号：US11463207

申请日：2006-08-08

Applicant: Hsi Pin Ma ,  Chung Wen Yu

Inventor： Hsi Pin Ma ,  Chung Wen Yu

IPC: H04L1/02

CPC classification number: H04L1/0656

Abstract: A scalable Multiple-Input Multiple-Output (MIMO) detector, comprises an ordering block, a group interference suppression block, a core detector and a residual detector. The ordering block determines an order of the columns of a channel matrix including received streams based on the power thereof. The group interference suppression block coupled to the ordering block groups received streams into a core part and a residual part, the core part including a first received stream and a second received stream corresponding to the first two columns of the channel matrix in the order, the first received stream and the second received stream forming a received signal vector, and the residual part including the rest of the received streams. The core detector detects the core part based on a 2×2 Simplified Maximum Likelihood (SML) detection. The residual detector detects the residual part by Vertical Bell Laboratories Layered Space Time (VBLAST) detection.

Abstract translation: 可扩展的多输入多输出（MIMO）检测器，包括排序块，组干扰抑制块，核心检测器和残差检测器。 排序块基于其功率确定包括接收的流的信道矩阵的列的顺序。 耦合到排序块组的组干扰抑制块将数据流接收到核心部分和剩余部分中，核心部分包括按照顺序与信道矩阵的前两列对应的第一接收流和第二接收流， 第一接收流和第二接收流形成接收信号矢量，剩余部分包括其余接收到的流。 核心检测器基于2x2简化最大似然（SML）检测器检测核心部分。 残留检测器通过Vertical Bell Laboratories分层空间时间（VBLAST）检测器检测残留部分。

公开(公告)号：US07324480B2

公开(公告)日：2008-01-29

申请号：US10520694

申请日：2003-07-10

Applicant: Sung-Jin Kim ,  Ki-Ho Kim ,  Chang-Soon Park ,  Kwang-Bok Lee

Inventor： Sung-Jin Kim ,  Ki-Ho Kim ,  Chang-Soon Park ,  Kwang-Bok Lee

IPC: H04M1/00

CPC classification number: H04L1/0006 ,  H04B7/0634 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L1/0656 ,  H04L1/1812

Abstract: A mobile communication apparatus including a base station and at least two mobile stations, having multiple antennas, respectively is provided. In the mobile communication apparatus, the base station restores from feedback signals transmitted from the mobile stations weight information determined in the mobile stations, generates from the restored weight information downlink control information ensuring maximum throughput to each of the mobile stations, and selects from among data of all of the mobile stations data of a desired mobile station(s) to be transmitted, based on the downlink control information. Each of each of the mobile stations has at least one mobile station antenna, the base station has at least two base station antennas, and the downlink control information includes mobile station selection information, an optimal basis matrix index, and optimal gain indices. As a result, nominal peak throughput in multi-antenna mobile communications can be efficiently achieved at low costs.

Abstract translation: 提供了分别具有多个天线的基站和至少两个移动台的移动通信装置。 在移动通信装置中，基站从移动台发送的反馈信号中恢复加权信息，从恢复的加权信息生成确保每个移动台的最大吞吐量的下行链路控制信息，并从数据中进行选择 基于下行链路控制信息，要发送的所需移动台的所有移动站数据的数据。 每个移动台具有至少一个移动台天线，基站具有至少两个基站天线，并且下行链路控制信息包括移动台选择信息，最优基矩阵索引和最优增益索引。 因此，可以以低成本有效地实现多天线移动通信中的标称峰值吞吐量。

公开(公告)号：US20070255993A1

公开(公告)日：2007-11-01

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 OFDM-MIMO communication system. In this system, an ACK/NACK output part (320) of a receiver transmits, to a transmitter, a feedback information of positive or negative response based on the result of a cyclic redundancy check. An error data stream decision part (310) of the transmitter determines, based on the feedback information, a data stream that need be retransmitted, and a retransmission mode selection part (312) 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传请求控制系统。 在该系统中，接收机的ACK / NACK输出部分（320）基于循环冗余校验的结果向发射机发送正或负响应的反馈信息。 发射机的误差数据流判定部（310）基于反馈信息，决定需要重发的数据流，重传模式选择部（312）从（a） 通过与先前传输中相同的天线来传输要重发的数据，同时通过使用不经过数据重传的天线同时发送新数据; （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：US20070248151A1

公开(公告)日：2007-10-25

申请号：US11710856

申请日：2007-02-26

Applicant: Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

Inventor： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

IPC: H04B1/00

CPC classification number: H04B7/0854 ,  H04L1/0656

Abstract: A receiver for ICI cancellation in a MIMO system is provided, in which a detection orderer determines a subcarrier detection order according to SINRs of subcarriers in an I-CMOS, a detector receives a vector on the subcarriers and a priori information from a decoder according to the subcarrier detection order and iteratively estimates the received vector using the a priori information, and the decoder decodes an ICI-cancelled signal according to the estimate.

Abstract translation: 提供了一种MIMO系统中用于ICI消除的接收机，其中检测对象根据I-CMOS中的子载波的SINR确定子载波检测顺序，检测器接收到子载波上的向量，根据 子载波检测顺序，并使用先验信息迭代地估计接收到的矢量，并且解码器根据估计解码ICI消除信号。

公开(公告)号：US20070223618A1

公开(公告)日：2007-09-27

申请号：US11714060

申请日：2007-03-05

Applicant: Hong-Sil Jeong ,  Seung-Hoon Choi ,  Gyu-Bum Kyung ,  Dong-Seek Park ,  Jae-Yoel Kim

Inventor： Hong-Sil Jeong ,  Seung-Hoon Choi ,  Gyu-Bum Kyung ,  Dong-Seek Park ,  Jae-Yoel Kim

IPC: H04L1/02

CPC classification number: H04L1/0656 ,  H03M13/116 ,  H03M13/1188 ,  H04B7/0473 ,  H04B7/0669 ,  H04L1/0001 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/007 ,  H04L1/0625 ,  H04L25/0204 ,  H04L25/03343 ,  H04L27/186 ,  H04L27/3416 ,  H04L2001/0098 ,  H04L2025/03426

Abstract: An apparatus for transmitting a signal in a Multiple Input Multiple Output (MIMO) communication system includes determining transmission antennas to be used by a signal transmission apparatus depending on channel quality information received from a reception apparatus, encoding an input information data stream into a codeword using a coding scheme, mapping the codeword using a MIMO mapping scheme thereby generating at least one mapped symbol, modulating the mapped symbols into modulation symbols according to a modulation scheme, and performing transmission processing on the modulation symbols thereby generating transmission streams, and transmitting the transmission streams via the determined transmission antennas.

Abstract translation: 一种用于在多输入多输出（MIMO）通信系统中发送信号的装置，包括：根据从接收装置接收的信道质量信息，确定要由信号发送装置使用的发送天线，将输入信息数据流编码为码字，使用 编码方案，使用MIMO映射方案映射码字，从而生成至少一个映射符号，根据调制方案将映射的符号调制为调制符号，并对调制符号进行发送处理，从而生成传输流，并发送传输 经由所确定的发射天线。