公开(公告)号：US08660197B2

公开(公告)日：2014-02-25

申请号：US13254075

申请日：2009-03-06

Applicant: Ulf Lindgren ,  Henrik Sahlin

Inventor： Ulf Lindgren ,  Henrik Sahlin

IPC: H04K1/10

CPC classification number: H04L27/266 ,  H04L27/2659

Abstract: For compensating carrier frequency generation in communication equipment for radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based wireless radio communication system, in which reference signals known communication equipment are transmitted in a regular time repetitive manner, carrier frequency generation is compensated (63) by a calculated carrier frequency offset estimate. The carrier frequency offset estimate in the communication equipment is calculated from coarse (61) and fine carrier frequency offset estimates (62). The coarse carrier frequency offset estimate (61) is calculated in the frequency domain from reference symbols of a reference signal received (60) at the communication equipment and the fine carrier frequency offset estimate (62) is calculated in the time domain from reference symbols of reference signals repetitively received (60) at said communication equipment. An algorithm and an estimator module (90) for calculating a coarse carrier frequency offset are provided.

Abstract translation: 为了补偿在正交频分复用的基于OFDM的无线电通信系统中的用于无线电传输的通信设备中的载波频率产生，其中通信设备已知的参考信号以规则的时间重复方式发送，载波频率产生被补偿（ 63）通过计算的载波频率偏移估计。 通信设备中的载波频率偏移估计由粗略（61）和精细载波频率偏移估计（62）计算。 在通信设备处接收到的参考信号（60）的参考符号的频域中计算粗略载波频率偏移估计（61），并且在时域中从参考符号的参考符号计算精细载波频率偏移估计（62） 在所述通信设备处重复地接收（60）的参考信号。 提供了一种用于计算粗载波频率偏移的算法和估计器模块（90）。

公开(公告)号：US08213486B2

公开(公告)日：2012-07-03

申请号：US12447292

申请日：2006-10-27

Applicant: Ulf Lindgren

Inventor： Ulf Lindgren

IPC: H04B1/00

CPC classification number: H04L25/03993 ,  H04B1/7115 ,  H04B2201/709727 ,  H04L2025/03426

Abstract: A method for simplifying calculations for pre-whitening in a G-RAKE receiver, comprising receiving at least two signals with at least two antennas via a channel, where each one of said received signals comprises time delayed and attenuated versions of the original signals. Each received signal forms a corresponding vector of received signal versions and the vectors form a matrix of received signals, where, due to correlation between the antennas, the received signals are correlated. Each version also comprises a certain amount of colored noise. The correlating effect of the antennas is estimated and formulated in matrix form and used to acquire essentially uncorrelated received signal vectors in an essentially uncorrelated received signal matrix. A calculated inverse of a covariance matrix of the calculated essentially uncorrelated signal vectors is used to pre-whiten the noise. A G-RAKE receiver arranged for applying the method above.

Abstract translation: 一种用于简化G-RAKE接收机中的前白化计算的方法，包括经由信道至少接收至少两个天线的至少两个信号，其中每个所述接收信号包括原始信号的时间延迟和衰减版本。 每个接收的信号形成接收信号版本的对应矢量，并且矢量形成接收信号的矩阵，其中由于天线之间的相关性，接收信号相关。 每个版本还包含一定量的彩色噪音。 天线的相关效应被估计并以矩阵形式表示，并且用于在基本上不相关的接收信号矩阵中获取基本上不相关的接收信号向量。 使用计算出的基本上不相关的信号向量的协方差矩阵的计算逆来预处理噪声。 G-RAKE接收机被设置为应用上述方法。

公开(公告)号：US08089419B2

公开(公告)日：2012-01-03

申请号：US12306822

申请日：2006-06-30

Applicant: Ulf Lindgren

Inventor： Ulf Lindgren

IPC: H01Q21/00

CPC classification number: H01Q21/10 ,  H01Q9/285 ,  H04B7/0413 ,  H04B7/0434

Abstract: The present invention relates to a method for acquiring a configuration of a re-configurable antenna, having at least two different antenna element configurations, where the antenna's element mutual coupling characteristics are known in advance in the form of an antenna coupling matrix (Ck(n)), the acquired configuration having a desired effect on a transmission channel, the method comprising the steps: setting an initial configuration of the re-configurable antenna, resulting in an initial coupling matrix (C0); estimating the transmission channel matrix (Ĥ(n)), which transmission channel matrix (Ĥ(n)) includes the effect of the antenna; calculating a generic transmission channel matrix ({tilde over (Ĥ)}(n)), which generic transmission channel matrix ({tilde over (Ĥ)}(n)) excludes the effect of the antenna; and extracting a coupling matrix (C) that provides a desired transmission channel matrix (H(n)), including the effect of the antenna.

Abstract translation: 本发明涉及一种用于获取具有至少两个不同天线元件配置的可再配置天线的配置的方法，其中天线元件的互耦合特性预先以天线耦合矩阵（Ck（n ）），所获取的配置对传输信道具有期望的效果，所述方法包括以下步骤：设置可重新配置的天线的初始配置，得到初始耦合矩阵（C0）; 估计传输信道矩阵（Ĥ（n）），传输信道矩阵（Ĥ（n）））包括天线的影响; 计算通用传输信道矩阵（{Ĥ）}（n）），哪个通用传输信道矩阵（{Ĥ）}（n））排除了天线的影响; 以及提取包括天线的效果的提供期望的传输信道矩阵（H（n））的耦合矩阵（C）。

公开(公告)号：US07965993B2

公开(公告)日：2011-06-21

申请号：US12088652

申请日：2006-09-29

Applicant: Ulf Lindgren

Inventor： Ulf Lindgren

IPC: H04B17/00 ,  H04B1/06

CPC classification number: H04B7/002 ,  H04B7/10

Abstract: A method and device for compensation of received signal components at a user equipment (UE) used for receiving signal components from a radio base station (RBS). The signal components have at least a first and a second polarization orientation, respectively. The intended reception of the signal component (Yh(n)) having the first polarization deviates from the polarization orientation of the transmitted signal component (Xh(n)) having the first polarization by a first angle (φ), and the intended reception of the signal component (Yv(n)) having the second polarization deviates from the polarization orientation of the transmitted signal component (xv(n)) having the second polarization by a second angle (θ). The method comprises the steps: determining the correlation values (Ryvv, Ryvy, Ryyv, Ryyy) for the received signals (Yh, Yv) at a first time (k) and a second time (m); using these values to determine the deviation angles (φ, θ) performing said compensation using the deviation angles (φ, θ).

Abstract translation: 一种用于在用于从无线电基站（RBS）接收信号分量的用户设备（UE）处补偿接收信号分量的方法和装置。 信号分量分别具有至少第一和第二极化取向。 具有第一极化的信号分量（Yh（n））的预期接收偏离了具有第一偏振的第一偏振的发射信号分量（Xh（n））的偏振取向偏移第一角度（＆phgr;），并且预期的接收 具有第二偏振的信号分量（Yv（n））偏离具有第二偏振的透射信号分量（xv（n））的偏振取向偏移第二角度（“θ”）。 该方法包括以下步骤：在第一时间（k）和第二时间（m）确定接收信号（Yh，Yv）的相关值（Ryvv，Ryvy，Ryyv，Ryyy）; 使用这些值来确定使用偏差角（＆phgr;＆thetas;）执行所述补偿的偏差角（＆phgr;＆amp; tt）。

公开(公告)号：US20100013710A1

公开(公告)日：2010-01-21

申请号：US12530409

申请日：2007-03-09

Applicant: Ulf Lindgren ,  Fredrik Athley

Inventor： Ulf Lindgren ,  Fredrik Athley

IPC: H01Q3/26

CPC classification number: G01S3/043 ,  G01S3/74

Abstract: The present invention relates to an array antenna arrangement comprising at least two antenna sub-arrays and at least one antenna element in each antenna sub-array. The array antenna arrangement is adapted for calculation of a total covariance matrix (R) of a received signal vector (x). The array antenna arrangement further comprises at least one switch, where the number of switches corresponds to the number of antenna elements in each antenna sub-array. Each switch is connected to a respective radio chain, and is arranged to connect the antenna elements of a respective corresponding antenna sub-array to the respective radio chain cyclically. At least one full switch cycle, comprising a set of received signals for each switch configuration, is carried out for a calculation of the total covariance matrix (R). The present invention also relates to a corresponding method.

Abstract translation: 本发明涉及包括至少两个天线子阵列和每个天线子阵列中的至少一个天线元件的阵列天线装置。 阵列天线装置适于计算接收信号矢量（x）的总协方差矩阵（R）。 阵列天线装置还包括至少一个开关，其中开关的数量对应于每个天线子阵列中的天线元件的数量。 每个开关连接到相应的无线电链，并且被布置成将各个对应的天线子阵列的天线元件循环地连接到相应的无线电链。 执行包括用于每个开关配置的一组接收信号的至少一个完整的开关周期以用于计算总协方差矩阵（R）。 本发明还涉及相应的方法。

公开(公告)号：US06545612B1

公开(公告)日：2003-04-08

申请号：US09597303

申请日：2000-06-20

Applicant: Ulf Lindgren ,  Christian Björk

Inventor： Ulf Lindgren ,  Christian Björk

IPC: G08B2100

CPC classification number: H04M1/0202 ,  H04M1/605 ,  H04M1/72519 ,  H04M2250/12

Abstract: An electronic communications device having a proximity sensor comprising: communication means (7) and a proximity sensor adapted to provide a control signal (Y2; Y3; Y4) indicative of whether an object (8) is in proximity of the device. The device is characterized by having a proximity sensor coil (L1; L2; L3; L5; L6; LP; LL) with an impedance, and oscillation means (C1, C2, 302; 601; 804) coupled to the proximity sensor coil (L1; L2; L3; L5; L6; LP; LL) to provide the control signal (Y2; Y3; Y4) in response to the impedance. In a preferred embodiment the proximity sensor coil is a loudspeaker coil. The invention also relates to a method of detecting proximity of an object relative to a loudspeaker (11; 703; 803) with a loudspeaker coil (L5; L6) which has an impedance.

Abstract translation: 一种具有接近传感器的电子通信设备，包括：通信装置（7）和接近传感器，适于提供指示物体（8）是否在设备附近的控制信号（Y2; Y3; Y4）。 该装置的特征在于具有具有阻抗的接近传感器线圈（L1; L2; L3; L5; L6; LP; LL）和耦合到接近传感器线圈的振荡装置（C1，C2,302; 601; 804） L1; L2; L3; L5; L6; LP; LL），以响应于阻抗提供控制信号（Y2; Y3; Y4）。在优选实施例中，接近传感器线圈是扬声器线圈。 本发明还涉及一种用具有阻抗的扬声器线圈（L5; L6）来检测物体相对于扬声器（11; 703; 803）的接近度的方法。

公开(公告)号：US06442013B1

公开(公告)日：2002-08-27

申请号：US09597302

申请日：2000-06-20

Applicant: Ulf Lindgren ,  Christian Björk

Inventor： Ulf Lindgren ,  Christian Björk

IPC: H01G700

CPC classification number: H04M1/0202 ,  H04M1/605 ,  H04M1/72519 ,  H04M2250/12

Abstract: An electronic device (1), e.g. a mobile telephone having a front cover (6) and a capacitive proximity sensor, comprising: a first electrode (9; 27) and a second electrode (8; 21, 20), said first electrode having a large face (11, 12, 13; 29); and detector means connected to the first electrode (9, 27) and the second electrode (8, 21, 20) for detecting the capacitance of the first electrode relatively to the second electrode and for providing a control signal (Vprox) responsive to the capacitance. The large face (11, 12, 13; 29) of the first electrode is inclined relative to the front cover (6).

Abstract translation: 电子设备（1），例如 具有前盖（6）和电容式接近传感器的移动电话包括：第一电极（9; 27）和第二电极（8; 21,20），所述第一电极具有大的面（11,12， 13; 29）; 以及连接到所述第一电极（9,27）和所述第二电极（8,21,20）的检测器装置，用于检测所述第一电极相对于所述第二电极的电容，并且用于提供响应于所述电容的控制信号（V prox） 。 第一电极的大面（11,12,13,29）相对于前盖（6）倾斜。

公开(公告)号：US08711987B2

公开(公告)日：2014-04-29

申请号：US13264192

申请日：2009-04-16

Applicant: Henrik Sahlin ,  Ulf Lindgren ,  Peter Naucler ,  Chester Park

Inventor： Henrik Sahlin ,  Ulf Lindgren ,  Peter Naucler ,  Chester Park

IPC: H04L27/06

CPC classification number: H04L27/2647 ,  H04L25/0204 ,  H04L25/0246 ,  H04L25/025 ,  H04L25/03159 ,  H04L25/03216 ,  H04L25/03254 ,  H04L25/0328 ,  H04L25/03299 ,  H04L25/03305 ,  H04L25/03318 ,  H04L2025/03375

Abstract: The present invention relates to a method in a receiver for decoding at least two received communication signals, wherein the communication signals are modulated, pre-coded by a discrete Fourier transform and transmitted by means of single-carrier frequency division multiple access scheme (SC-FDMA). The method comprises the steps of: performing an antenna combining and equalization on a signal observed at the receiver; performing inverse discrete Fourier transform on a model of the observed signal; whitening a time domain model of the observed signal; and jointly detecting the received at least two communication signals by performing soft value calculations based on maximum likelihood detection of a whitened time domain model using a whitened time domain channel estimate.

Abstract translation: 本发明涉及用于对至少两个接收到的通信信号进行解码的接收机中的方法，其中通过离散付里叶变换对通信信号进行调制，预编码，并通过单载波频分多址方案（SC- FDMA）。 该方法包括以下步骤：对接收机上观察到的信号执行天线组合和均衡; 对观测信号的模型执行逆离散傅里叶变换; 美白观察信号的时域模型; 并且通过使用白化的时域信道估计基于白化时域模型的最大似然检测执行软值计算来共同检测所接收的至少两个通信信号。

公开(公告)号：US08675763B2

公开(公告)日：2014-03-18

申请号：US13123673

申请日：2008-10-09

Applicant: Ulf Lindgren ,  Bo Hagerman

Inventor： Ulf Lindgren ,  Bo Hagerman

IPC: H04B7/02

CPC classification number: H04B7/0691 ,  H04B7/0417 ,  H04B7/0602 ,  H04B7/0639

Abstract: The present invention relates to a multi-stream communication system comprising a transmitting node provided with a polyphase antenna and a receiving node provided with an antenna arrangement configured to receive multiple data streams. The polyphase antenna has at least one group of multiple antenna elements, each group having N antenna elements. The transmitting node is also provided with at least one radio chain and a switch for each radio chain arranged to cyclically connect each radio chain to the antenna elements in one of the groups. The switch is configured to operate with a switching frequency fsw. The transmitting node is further configured to transmit M weighted symbols of an uncorrelated signal from each antenna element in each group, the M weighted symbols being less than or equal to N, and the receiving node is further configured to convert the received N data streams into each respective uncorrelated signal.

Abstract translation: 多流通信系统技术领域本发明涉及一种多流通信系统，包括：具有多相天线的发送节点和配置有接收多个数据流的天线配置的接收节点。 多相天线具有至少一组多个天线元件，每组具有N个天线元件。 发射节点还设置有至少一个无线电链和用于每个无线电链的交换机，其被布置为将每个无线电链周期性地连接到组中的一个中的天线元件。 开关配置为以开关频率fsw运行。 发送节点还被配置为从每个组中的每个天线元件发送不相关信号的M个加权符号，M个加权符号小于或等于N，并且接收节点还被配置为将接收到的N个数据流转换成 各自不相关的信号。

公开(公告)号：US08599070B2

公开(公告)日：2013-12-03

申请号：US13140498

申请日：2008-12-22

Applicant: Ulf Lindgren ,  Fredrik Athley ,  Mikael Coldrey

Inventor： Ulf Lindgren ,  Fredrik Athley ,  Mikael Coldrey

IPC: H04B7/00

CPC classification number: H04B7/0417 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0656

Abstract: The present invention relates to a first node (1) in a wireless communication system (2), where the first node (1) comprises at least two antenna ports (3, 4), and is arranged for communication with a second node (5) via a channel (H) by means of at least one antenna radiation lobe (6, 7, 8, 9). The second node (5) comprises at least two antenna ports (10, 11) and is positioned at a certain direction (12) in relation to the first node (1), and is arranged for transmitting one of at least two precoding weight set requests to the first node (1) at certain times. Each transmitted precoding weight set request is chosen in dependence of the channel (H) such that the first node (1) receives instructions for a certain beam-forming. The first node (1) is arranged to apply such a beam-forming that the precoding weight set requests received from the second node (5) have one certain distribution, of a set of at least one certain distribution, over a certain time period.

Abstract translation: 本发明涉及无线通信系统（2）中的第一节点（1），其中第一节点（1）包括至少两个天线端口（3,4），并且被布置为与第二节点（5）通信 ）通过至少一个天线辐射波束（6,7,8,9）经由通道（H）。 第二节点（5）包括至少两个天线端口（10,11）并且相对于第一节点（1）位于特定方向（12），并且被布置用于发送至少两个预编码权重集合 在特定时间向第一个节点（1）发出请求。 根据信道（H）选择每个发送的预编码权重集请求，使得第一节点（1）接收到用于特定波束形成的指令。 第一节点（1）被布置为在一定时间段内应用这样的波束形成，即从第二节点（5）接收的预编码权重集请求具有一组至少一个特定分布的一定分布。