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    Modulation with fundamental group
    13.
    发明授权
    Modulation with fundamental group 有权
    基本组调制

    公开(公告)号：US09331885B2

    公开(公告)日：2016-05-03

    申请号：US13909213

    申请日：2013-06-04

    Applicant: Raytheon BBN Technologies Corp.

    Inventor： Michael Joseph Geile

    IPC: H04L27/36 ,  H04L27/34

    CPC classification number: H04L27/3444

    Abstract: Embodiments of a system and method for providing fundamental group modulation are generally described herein. In some embodiments, a trajectory mapper is arranged to receive a modulation symbol sequence. A signal trajectory sample memory is arranged to store a representation of signal trajectories for a topological space having a set of predetermined removed regions therein. The trajectory mapper accesses the signal trajectory sample memory to select a signal trajectory relative to the set of predetermined removed regions in the topological space based on the received modulation symbol sequence and produces a sequence of in-phase (I) and quadrature (Q) sample values at a specified sample rate in response to the selected signal trajectory, the I and Q sample values serving as a basis for an amplified radio frequency signal.

    Abstract translation: 本文通常描述用于提供基本群组调制的系统和方法的实施例。 在一些实施例中，轨迹映射器被布置成接收调制符号序列。 信号轨迹采样存储器被布置成存储对于其中具有一组预定去除区域的拓扑空间的信号轨迹的表示。 基于所接收的调制符号序列，轨迹映射器访问信号轨迹采样存储器以相对于拓扑空间中的预定去除区域集合选择信号轨迹，并产生同相（I）和正交（Q）采样序列 响应于所选择的信号轨迹以指定采样率的值，作为放大射频信号的基础的I和Q采样值。

    Mobile device transmitter and methods for transmitting signals in different signal dimensions for 3GPP LTE
    14.
    发明授权
    Mobile device transmitter and methods for transmitting signals in different signal dimensions for 3GPP LTE 有权
    移动设备发射机和用于在3GPP LTE中以不同信号维度传输信号的方法

    公开(公告)号：US09300504B2

    公开(公告)日：2016-03-29

    申请号：US13895555

    申请日：2013-05-16

    Applicant: Intel Corporation

    Inventor： Qinghua Li ,  Huaning Niu ,  Yuan Zhu ,  Xintian E. Lin ,  Xiaogang Chen ,  Alexei Davydov ,  Thomas J. Kenney ,  Eldad Perahia

    IPC: H04K1/02 ,  H04L25/08 ,  H04W52/10 ,  H04W52/36 ,  H04L1/06 ,  H04L27/34 ,  H04W52/14

    CPC classification number: H04B7/0617 ,  H04B7/0413 ,  H04L1/0606 ,  H04L25/08 ,  H04L27/2626 ,  H04L27/2634 ,  H04L27/3444 ,  H04W52/10 ,  H04W52/146 ,  H04W52/36 ,  H04W72/082

    Abstract: Embodiments of a mobile device transmitter and methods for transmitting signals in different signal dimensions are generally disclosed herein. The mobile device transmitter comprises a mapper to map a block of two or more input modulation symbols to different signal dimensions comprising two or more spatial dimensions, and linear transform circuitry to perform a linear transform on the block of mapped input modulation symbols to generate a block of precoded complex-valued output symbols such that each output symbol carries some information of more than one input modulation symbol. The mobile device also comprises transmitter circuitry to generate time-domain signals from the blocks of precoded complex-valued output symbols for each of the spatial dimensions for transmission using the two or more antennas. The precoded complex-valued output symbols are mapped to different signal dimensions comprising at least different frequency dimensions prior to transmission.

    Abstract translation: 移动设备发射机的实施例和用于在不同信号尺寸上传输信号的方法一般在此公开。 移动设备发射机包括映射器，以将两个或更多个输入调制符号的块映射到包括两个或更多个空间维度的不同信号维度，以及线性变换电路，用于对映射的输入调制符号块执行线性变换以产生块 的预编码复值输出符号，使得每个输出符号携带多于一个输入调制符号的一些信息。 移动设备还包括发射机电路，用于根据用于使用两个或更多个天线进行传输的每个空间维度，从预编码的复值输出符号块生成时域信号。 预编码的复值输出符号被映射到在传输之前至少包括不同频率尺寸的不同信号尺寸。

    Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (QAM) based communication system
    15.
    发明授权
    Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (QAM) based communication system 有权
    在基于旋转正交幅度调制（QAM）的通信系统中执行软解映射的方法和装置

    公开(公告)号：US09246724B2

    公开(公告)日：2016-01-26

    申请号：US14200739

    申请日：2014-03-07

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Peng Xue ,  Kyeong Yeon Kim ,  Ki Taek Bae ,  Navneet Basutkar ,  Ho Yang

    IPC: H03D3/22 ,  H04L27/22 ,  H04L27/06 ,  H04L25/06 ,  H04L27/38 ,  H04L27/34

    CPC classification number: H04L27/06 ,  H04L25/067 ,  H04L27/3444 ,  H04L27/38

    Abstract: A soft demapping apparatus and method thereof includes a pre-processing unit to pre-process a reception signal obtained from a symbol representing bits. A candidate selection unit selects two candidates from among constellation points included in a constellation for each of the bits. A distance calculation unit calculates a Euclidean distance between the reception signal and the two candidates. A log-likelihood ratio (LLR) calculation unit calculates an LLR with respect to the bits based on the Euclidean distance between the reception signal and the two candidates.

    Abstract translation: 软解映射装置及其方法包括：预处理单元，用于预处理从表示比特的符号获得的接收信号。 候选选择单元从针对每个位的星座中包括的星座点中选择两个候选。 距离计算单元计算接收信号与两个候选者之间的欧几里得距离。 对数似然比（LLR）计算单元基于接收信号和两个候选者之间的欧氏距离来计算相对于比特的LLR。

    Transmitting method, receiving method, transmitter and receiver
    20.
    发明授权
    Transmitting method, receiving method, transmitter and receiver 有权
    发射方式，接收方式，发射机和接收机

    公开(公告)号：US08982927B2

    公开(公告)日：2015-03-17

    申请号：US14352088

    申请日：2012-11-07

    Applicant: Panasonic Corporation

    Inventor： Mihail Petrov

    IPC: H04B1/00 ,  H04B7/06 ,  H04L27/34 ,  H04L1/00

    CPC classification number: H04B7/06 ,  H04L1/0042 ,  H04L1/0071 ,  H04L27/3444 ,  H04L27/345

    Abstract: D-dimensional vectors that each have D real-valued symbols as elements are converted into D-dimensional rotated vectors that each have D real symbols as elements. The conversion is performed by multiplying each of the D-dimensional vectors by a D×D orthogonal matrix. A complex symbol sequence including NC=NS/2 complex symbols is generated from NS real symbols. The complex symbol sequence is generated such that the distance between any two of the D real symbols of each of the D-dimensional rotated vectors is NC/D complex symbols or NC/D−1 complex symbols, or such that the distance between any two of the D real symbols of each of the D-dimensional rotated vectors, except for part of the D-dimensional rotated vectors, is NC/D complex symbols or NC/D−1 complex symbols.

    Abstract translation: 每个具有D个实值符号作为元素的D维向量被转换成D维旋转的向量，每个都具有D个实数符号作为元素。 通过将每个D维向量乘以D×D正交矩阵来执行转换。 从NS实数符号生成包括NC = NS / 2复符号的复符号序列。 生成复符号序列，使得D维旋转向量中的每一个的D个实数符号中的任意两个之间的距离是NC / D复符号或NC / D-1复符号，或者使得任何两个 除了D维旋转矢量的一部分之外的每个D维旋转矢量的D个实数符号是NC / D复符号或NC / D-1复符号。

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