Method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output wireless communication system
    41.
    发明授权
    Method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output wireless communication system 失效
    一种用于在多输入多输出无线通信系统中产生用于发射功率控制的反馈信息的方法和装置

    公开(公告)号:US07630732B2

    公开(公告)日:2009-12-08

    申请号:US11152435

    申请日:2005-06-14

    IPC分类号: H04B7/00

    CPC分类号: H01Q3/2605

    摘要: The present invention is related to a method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.

    摘要翻译: 本发明涉及一种用于在多输入多输出(MIMO)无线通信系统中产生用于发射功率控制的反馈信息的方法和装置。 发射机和接收机都包括用于传输和接收的多个天线。 发射机包括功率分配单元,用于基于从接收机接收的反馈来控制发射功率。 接收机包括信道估计器和奇异值分解(SVD)单元。 信道估计器从从发射机接收的信号中生成信道矩阵,并且SVD单元将信道矩阵分解为D,U和V矩阵。 接收机将基于SVD单元的输出产生的反馈发送到发射机。 反馈可以是特征值,发射功率电平或功率控制位或命令之一。 可以实现用于基于信道条件选择其中的一个的混合方案。

    GENERATING A NODE-B CODEBOOK
    43.
    发明申请
    GENERATING A NODE-B CODEBOOK 审中-公开
    生成节点B代码

    公开(公告)号:US20080316935A1

    公开(公告)日:2008-12-25

    申请号:US12136156

    申请日:2008-06-10

    IPC分类号: H04L12/26

    摘要: A method and apparatus generates a codebook and associated scheduling and control signaling. A plurality of channel combinations is generated for a plurality of wireless transmit receive units (WTRUs). The channel for each WTRU is quantized based on the WTRU codebook. A codebook for beamforming is generated for a plurality of WTRUs. The codebook includes a plurality of beamforming matrices. All possible beamforming matrices may be computed and the codebook may be quantized.

    摘要翻译: 方法和装置产生码本和相关的调度和控制信令。 为多个无线发射接收单元(WTRU)生成多个信道组合。 每个WTRU的信道基于WTRU码本量化。 为多个WTRU生成用于波束成形的码本。 码本包括多个波束形成矩阵。 可以计算所有可能的波束形成矩阵,并且可以量化码本。

    METHOD, APPARATUS AND SYSTEM FOR IMPLEMENTING MULTI-USER VIRTUAL MULTIPLE-INPUT MULTIPLE-OUTPUT
    45.
    发明申请
    METHOD, APPARATUS AND SYSTEM FOR IMPLEMENTING MULTI-USER VIRTUAL MULTIPLE-INPUT MULTIPLE-OUTPUT 有权
    用于实现多用户虚拟多路输入多输出的方法,装置和系统

    公开(公告)号:US20080032746A1

    公开(公告)日:2008-02-07

    申请号:US11834923

    申请日:2007-08-07

    IPC分类号: H04Q7/20

    摘要: A method and system for implementing multi-user virtual multiple-input multiple-output (MIMO) techniques for wireless transmit/receive units (WTRUs) having one or more antennas are disclosed. The system includes a base station and at least one WTRU having at least two antennas. The number of antennas of the base station is not less than the number of antennas of any of the WTRUs. The base station generates a channel matrix for the WTRUs and processes received signals from the WTRUs based on a measurement of the channel matrix. The WTRUs may perform transmit precoding or eigen-beamforming using the channel matrix information. The WTRUs may also perform transmit diversity.

    摘要翻译: 公开了一种用于实现具有一个或多个天线的无线发射/接收单元(WTRU)的多用户虚拟多输入多输出(MIMO)技术的方法和系统。 该系统包括基站和至少一个具有至少两个天线的WTRU。 基站的天线数量不小于任何WTRU的天线数量。 基站为WTRU生成信道矩阵,并基于信道矩阵的测量来处理来自WTRU的接收信号。 WTRU可以使用信道矩阵信息来执行发送预编码或特征波束成形。 WTRU还可以执行发射分集。

    Communication system and method using signal to noise ratio estimation for scaling in processing received wireless communication signals
    47.
    发明授权
    Communication system and method using signal to noise ratio estimation for scaling in processing received wireless communication signals 失效
    使用信噪比估计的通信系统和方法,用于缩放处理接收到的无线通信信号

    公开(公告)号:US06931584B2

    公开(公告)日:2005-08-16

    申请号:US10715153

    申请日:2003-11-17

    摘要: A system, components and methods provide FEC decoding in a wireless communication system in which signal to noise ratio estimation is used for scaling information captured by a demodulator in processing received wireless communication signals. A preferred wireless transmit receive unit (WTRU) has a channel rate estimation device configured to process the received communication signals for the particular communication channel and to produce channel change rate estimates. A signal to noise ratio (SNR) estimation device of the WTRU is configured to produce SNR estimates based on observation windows of a calculated number of samples of the received signal where the number of samples used for each observation window is calculated a function of the channel change rate estimates produce by the channel rate estimation device.

    摘要翻译: 系统,组件和方法在无线通信系统中提供FEC解码,其中使用信噪比估计来缩放解调器在处理接收的无线通信信号中捕获的信息。 优选的无线发射接收单元(WTRU)具有信道速率估计装置,其被配置为处理用于特定通信信道的所接收的通信信号并产生信道变化率估计。 WTRU的信噪比(SNR)估计装置被配置为基于所计算的接收信号样本的观测窗口来产生SNR估计,其中,每个观察窗口使用的采样数量被计算为信道的功能 信道速率估计装置产生的变化率估计值。

    Method and system for supporting multiple hybrid automatic repeat request processes per transmission time interval
    50.
    发明授权
    Method and system for supporting multiple hybrid automatic repeat request processes per transmission time interval 有权
    每个传输时间间隔支持多个混合自动重传请求过程的方法和系统

    公开(公告)号:US08352824B2

    公开(公告)日:2013-01-08

    申请号:US13309713

    申请日:2011-12-02

    IPC分类号: H04L1/18 G08C25/02

    摘要: A method and apparatus may be used for supporting multiple hybrid automatic repeat request (H-ARQ) processes per transmission time interval (TTI). A transmitter and a receiver may include a plurality of H-ARQ processes. Each H-ARQ process may transmit and receive one TB per TTI. The transmitter may generate a plurality of TBs and assign each TB to a H-ARQ process. The transmitter may send control information for each TB, which may include H-ARQ information associated TBs with the TBs. The transmitter may send the TBs using the associated H-ARQ processes simultaneously per TTI. After receiving the TBs, the receiver may send feedback for each of the H-ARQ processes and associated TBs indicating successful or unsuccessful receipt of each of the TBs to the transmitter. The feedback for multiple TBs may be combined for the simultaneously transmitted H-ARQ processes, (i.e., TBs).

    摘要翻译: 一种方法和装置可以用于支持每个传输时间间隔(TTI)的多个混合自动重复请求(H-ARQ)过程。 发射机和接收机可以包括多个H-ARQ过程。 每个H-ARQ过程可以每TTI发送和接收一个TB。 发射机可以生成多个TB并将每个TB分配给H-ARQ过程。 发射机可以发送每个TB的控制信息,其可以包括具有TB的H-ARQ信息相关联的TB。 发射机可以使用每个TTI同时使用相关的H-ARQ过程来发送TB。 在接收到TB之后,接收机可以向H-ARQ进程和相关联的TB中的每一个发送反馈,指示每个TB到发射机的成功或不成功的接收。 可以将多个TB的反馈组合用于同时发送的H-ARQ过程(即,TB)。