BLOCK ENCODING WITH A VARIABLE RATE BLOCK CODE
    31.
    发明申请
    BLOCK ENCODING WITH A VARIABLE RATE BLOCK CODE 有权
    用可变速率编码块编码

    公开(公告)号:US20110065443A1

    公开(公告)日:2011-03-17

    申请号:US12365565

    申请日:2009-02-04

    Abstract: A control channel encoder includes a determiner to determine a current value of K for encoding control signals of a length M, wherein K is a function of a code rate for a data channel. A table generator generates first and second block encoding matrices, each of the first and second block encoding matrices having a variable length, from a fixed block encoding matrix by variably repeating rows from the fixed block encoding matrix to produce a repeated matrix of length K, puncturing the repeated matrix a first time to generate the first block encoding matrix, and puncturing the first block encoding matrix a second time to generate the second block encoding matrix. A block encoder utilizes the block encoding matrix to encode M input control bits as K encoded control bits.

    Abstract translation: 控制信道编码器包括确定用于编码长度为M的控制信号的K的当前值的确定器,其中K是数据信道的码率的函数。 表格生成器通过从固定块编码矩阵可变地重复行而从固定块编码矩阵生成第一和第二块编码矩阵中的每一个具有可变长度,以产生长度为K的重复矩阵, 首先对重复矩阵进行穿孔,以产生第一块编码矩阵,并且第二次对第一块编码矩阵进行穿孔,以生成第二块编码矩阵。 块编码器利用块编码矩阵将M个输入控制位编码为K个编码控制位。

    PRECODING CODEBOOKS FOR MIMO COMMUNICATION SYSTEMS
    32.
    发明申请
    PRECODING CODEBOOKS FOR MIMO COMMUNICATION SYSTEMS 有权
    MIMO通信系统的预编码

    公开(公告)号:US20100172430A1

    公开(公告)日:2010-07-08

    申请号:US12652044

    申请日:2010-01-05

    Abstract: A method for communication includes configuring a communication system that includes a transmitter and a receiver with first precoding matrices for mapping up to N data streams onto N transmit antenna ports of the transmitter. Each of at least some of the first precoding matrices are derived from respective second and third precoding matrices configured for mapping onto respective numbers of transmit antenna ports that are less than N. The data streams are mapped onto the N transmit antenna ports using a precoding scheme based on one of the first precoding matrices. The mapped data streams are transmitted over the N transmit antenna ports from the transmitter to the receiver.

    Abstract translation: 一种用于通信的方法包括:配置具有第一预编码矩阵的发射机和接收机的通信系统,用于将多达N个数据流映射到发射机的N个发射天线端口。 至少一些第一预编码矩阵中的每一个从被配置用于映射到小于N的相应数量的发射天线端口的相应的第二和第三预编码矩阵导出。使用预编码方案将数据流映射到N个发射天线端口 基于第一预编码矩阵之一。 映射的数据流通过N个发射天线端口从发射机发射到接收机。

    EFFICIENT MIMO TRANSMISSION SCHEMES
    33.
    发明申请
    EFFICIENT MIMO TRANSMISSION SCHEMES 有权
    有效的MIMO传输方案

    公开(公告)号:US20100172424A1

    公开(公告)日:2010-07-08

    申请号:US12477152

    申请日:2009-06-03

    Abstract: A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver.

    Abstract translation: 一种用于通信的方法包括:在具有第一数量的发射天线端口的发射机中,将发射机使用的第二数量的空间层的上限设置为小于第一数量。 空间层的实际数量(不超过上限)被分配用于传送给给定的接收机。 调制符号的一个或多个流被映射到所分配的实际数量的空间层上。 空间层的实际数量从发射机发射到给定的接收机。

    BALANCING CAPACITY BETWEEN LINK DIRECTIONS USING VARIABLE FEEDBACK RATES
    34.
    发明申请
    BALANCING CAPACITY BETWEEN LINK DIRECTIONS USING VARIABLE FEEDBACK RATES 有权
    使用可变反馈速率的链接方向之间的平衡能力

    公开(公告)号:US20090316610A1

    公开(公告)日:2009-12-24

    申请号:US12348003

    申请日:2009-01-01

    CPC classification number: H04B7/0647 H04B7/0417 H04B7/0689

    Abstract: A method for communication includes providing a first transceiver configured to communicate with a second transceiver over a bi-directional link having a first aggregation of frequencies that are assigned to carry first communication traffic in a first link direction from the first transceiver to the second transceiver and a second aggregation of frequencies that are assigned to carry second communication traffic in a second link direction from the second transceiver to the first transceiver. Communication feedback is transmitted from the first transceiver to the second transceiver communication feedback at an adaptive feedback rate. The feedback rate is determined so as to achieve a desired balance between the information carrying capacities of the first and second aggregations. An information carrying capacity of the second aggregation is controlled responsively to the communication feedback.

    Abstract translation: 一种用于通信的方法包括:提供第一收发器,被配置为通过双向链路与第二收发器进行通信,所述双向链路具有被分配用于携带从第一收发机到第二收发信机的第一链路方向上的第一通信业务的第一聚合频率, 被分配用于承载从第二收发机到第一收发器的第二链路方向上的第二通信业务的频率的第二聚合。 通信反馈以自适应反馈速率从第一收发器发送到第二收发器通信反馈。 确定反馈速率以便在第一和第二聚集的信息承载能力之间实现期望的平衡。 响应于通信反馈来控制第二聚合的信息承载能力。

    System, method and device of adjusting a wireless communication signal
    35.
    发明申请
    System, method and device of adjusting a wireless communication signal 有权
    调整无线通信信号的系统,方法和装置

    公开(公告)号:US20070230588A1

    公开(公告)日:2007-10-04

    申请号:US11392748

    申请日:2006-03-30

    CPC classification number: H04L27/2614

    Abstract: Embodiments of the present invention provide a system, method, and apparatus of adjusting a wireless communication signal. In some demonstrative embodiments the method may include, for example, allocating a plurality of spectral components to an adjustment signal based on a spectral range of the wireless communication signal to be adjusted by the adjustment signal, wherein one or more of the spectral components are included in the spectral range. Other embodiments are described and claimed.

    Abstract translation: 本发明的实施例提供一种调整无线通信信号的系统,方法和装置。 在一些演示实施例中,该方法可以包括,例如,基于要由调整信号调整的无线通信信号的频谱范围,将多个频谱分量分配给调整信号,其中包括一个或多个频谱分量 在光谱范围内。 描述和要求保护其他实施例。

    Time delay estimation in a transmitter

    公开(公告)号:US07003051B2

    公开(公告)日:2006-02-21

    申请号:US09981631

    申请日:2001-10-16

    CPC classification number: H04L27/368 H03F1/3241 H03F1/3294 H04B2001/0425

    Abstract: In an embodiment, a transmitter section for a mobile device includes a predistorter for predistorting an input signal input to a modulation section. Predistortion values may be selected from a look-up table in response to a fed back signal from the output of the modulation section. A delay between the input signal and the fed back signal may be determined in two stages: a coarse delay estimation for determining a whole number of sample cycles, and a fine delay estimation for determining a fraction of a sample cycle to be added to the coarse delay estimation value.

    Filter for a modulator and methods thereof
    37.
    发明申请
    Filter for a modulator and methods thereof 有权
    调制器滤波器及其方法

    公开(公告)号:US20050129142A1

    公开(公告)日:2005-06-16

    申请号:US10734117

    申请日:2003-12-15

    Abstract: In some exemplary embodiments of the invention, a transfer function of a filter for a fractional-N sigma-delta modulator may be calculated to be optimized according to predefined optimization criteria. For example, the optimization criteria may include spectral cleanliness at the output of the modulator, or the mean squared error of the input to the filter and the input to a voltage controlled oscillator of the fractional-N phase locked loop (PLL). In some exemplary embodiments, the filter may be adjusted to compensate for variations and/or impairments in the analog fractional-N PLL. A non-exhaustive list of examples for the transfer function includes a finite impulse response and an infinite impulse response.

    Abstract translation: 在本发明的一些示例性实施例中,可以计算用于分数N个Σ-Δ调制器的滤波器的传递函数,以根据预定义的优化标准进行优化。 例如,优化标准可以包括在调制器的输出处的光谱清洁度,或者到滤波器的输入的平均误差以及分数N锁相环(PLL)的压控振荡器的输入。 在一些示例性实施例中,可以调整滤波器以补偿模拟分数N PLL中的变化和/或损伤。 传递函数示例的非穷举列表包括有限脉冲响应和无限脉冲响应。

    Unified MMSE equalization and multi-user detection approach for use in a CDMA system
    38.
    发明申请
    Unified MMSE equalization and multi-user detection approach for use in a CDMA system 有权
    用于CDMA系统的统一MMSE均衡和多用户检测方法

    公开(公告)号:US20050094713A1

    公开(公告)日:2005-05-05

    申请号:US10697853

    申请日:2003-10-30

    Applicant: Daniel Yellin

    Inventor: Daniel Yellin

    Abstract: A unified minimum mean square error (MMSE) equalization/multi-user detection (MUD) approach for demodulating direct sequence CDMA (DS-CDMA) signals is described. In at least one embodiment, the unified approach is capable of generating a variety of cost-effective receiver demodulation techniques that may range from, for example, a low cost linear MMSE equalization technique to a relatively high complexity MMSE MUD.

    Abstract translation: 描述了用于解调直接序列CDMA(DS-CDMA)信号的统一的最小均方误差(MMSE)均衡/多用户检测(MUD)方法。 在至少一个实施例中,统一的方法能够产生各种成本有效的接收机解调技术,其可以从例如低成本线性MMSE均衡技术到相对高复杂度的MMSE MUD。

    DC offset cancellation
    40.
    发明授权
    DC offset cancellation 失效
    DC偏移消除

    公开(公告)号:US06801581B1

    公开(公告)日:2004-10-05

    申请号:US09661127

    申请日:2000-09-13

    CPC classification number: H04L25/063 H03C3/40

    Abstract: A transmitter has a transmission path with an IQ modulator and a feedback path with an IQ demodulator. DC offset is determined by estimating a DC offset of the IQ demodulator, adaptively estimating a DC offset of the IQ modulator at least partially from the demodulator DC offset, subtracting the estimated demodulator DC offset from the feedback path and subtracting the estimated modulator DC offset from the transmission path.

    Abstract translation: 发射机具有与IQ调制器的传输路径和具有IQ解调器的反馈路径。 通过估计IQ解调器的DC偏移来确定DC偏移,至少部分地从解调器DC偏移来估计IQ调制器的DC偏移,从反馈路径中减去估计的解调器DC偏移并从中减去估计的调制器DC偏移 传输路径。

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