公开(公告)号：US20110188591A1

公开(公告)日：2011-08-04

申请号：US13081031

申请日：2011-04-06

Applicant: Elias Jonsson ,  Andres Reial

Inventor： Elias Jonsson ,  Andres Reial

IPC: H04W72/00 ,  H04L27/28

CPC classification number: H04W72/12 ,  H04B1/7103 ,  H04B1/712 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0697 ,  H04B2201/70701 ,  H04B2201/709727 ,  Y02D70/40 ,  Y02D70/444

Abstract: The teachings herein disclose methods and apparatus that simplify impairment correlation estimation for received signal processing, based on determining, for any given processing interval, which impairment contributors should be considered in the estimation of overall received signal impairment correlations. These simplifications reduce computational processing requirements, allowing reduced circuit complexity and/or reduced operating power, and improve receiver performance. A corresponding transmitter and transmission method include transmitting multiple information streams to targeted receivers according to ongoing scheduling, and controlling the ongoing scheduling to reduce the number of impairment contributors considered in impairment correlation estimation at the targeted receivers. In one embodiment, a receiver identifies which impairment contributors to consider based on receiving control information. In another embodiment, the receiver identifies the impairment contributors to consider based on background processing, e.g., background determination of parametric model fitting parameters for a plurality of impairment contributors, and observing those model fitting parameters over time.

Abstract translation: 本文的教导公开了简化对接收信号处理的损害相关估计的方法和装置，其基于对于任何给定的处理间隔，在估计总体接收信号损害相关中应考虑哪些损害贡献者。 这些简化减少了计算处理要求，从而降低了电路复杂度和/或降低了操作功率，并提高了接收机性能。 相应的发射机和传输方法包括根据正在进行的调度向目标接收机发送多个信息流，并控制正在进行的调度，以减少目标接收机的损害相关估计中所考虑的损害贡献者的数量。 在一个实施例中，接收机基于接收控制信息识别要考虑的损害贡献者。 在另一个实施例中，接收机基于背景处理识别要考虑的损害贡献者，例如用于多个损害贡献者的参数模型拟合参数的背景确定，以及随时间观察这些模型拟合参数。

公开(公告)号：US20110182279A1

公开(公告)日：2011-07-28

申请号：US12695864

申请日：2010-01-28

Applicant: Alexei Ashikhmin ,  Thomas L. Marzetta

Inventor： Alexei Ashikhmin ,  Thomas L. Marzetta

IPC: H04J3/06

CPC classification number: H04L25/0226 ,  H04B2201/70701 ,  H04J11/005 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03808

Abstract: Embodiments are described to mitigate network interference issues and to enable a significant increase in the throughput of wireless systems. In one method, pilot transmissions of a first and second group of wireless units are synchronized. Each wireless unit of the first group and each wireless unit of the second group use a different orthogonal pilot (than others in their group) from the same group of orthogonal pilots. Also, the pilot transmissions of the second group of wireless units are synchronized so as to be shifted in time from the pilot transmissions of the first group. In another method, data from neighboring cells and pilots from wireless units are received at a cell. Channel vectors for the wireless units are then estimated using the received data from neighboring cells, the received pilots from the wireless units and previously estimated channel vectors between the cell and the neighboring cells.

Abstract translation: 描述了实施例以减轻网络干扰问题并且能够显着提高无线系统的吞吐量。 在一种方法中，第一和第二组无线单元的导频传输被同步。 第一组的每个无线单元和第二组的每个无线单元使用来自同一组正交导频的不同的正交导频（在其组中比其他组）。 此外，第二组无线单元的导频传输被同步，以便在第一组的导频传输中从时间上移位。 在另一种方法中，来自相邻小区的数据和来自无线单元的导频在小区被接收。 然后使用来自相邻小区的接收数据，来自无线单元的接收到的导频以及小区和相邻小区之间的先前估计的信道向量来估计用于无线单元的信道向量。

公开(公告)号：US20110170493A1

公开(公告)日：2011-07-14

申请号：US13073594

申请日：2011-03-28

Applicant: James A. Proctor, JR. ,  Antoine J. Rouphael ,  John E. Hoffmann ,  George R. Nelson, JR.

Inventor： James A. Proctor, JR. ,  Antoine J. Rouphael ,  John E. Hoffmann ,  George R. Nelson, JR.

IPC: H04W40/00

CPC classification number: H04W56/001 ,  H04B1/7075 ,  H04B1/70775 ,  H04B1/7103 ,  H04B7/086 ,  H04B2201/70701 ,  H04L27/2273 ,  H04L2027/0057 ,  H04L2027/0087

Abstract: A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception angle pattern (i.e., an omni-directional pattern) and a fixed reception angle (i.e., a directional pattern) by permitting the receiver to identify a pilot signal having the largest magnitude. The receiver minimizes interference from other pilot signals by steering antenna pattern nulls toward other transmitters. As a result, the time required for the receiver to acquire a valid pilot signal is significantly reduced.

Abstract translation: 一种当使用自适应天线来接收发射数据时将CDMA接收机同步到发射机的方法，其中接收天线系统适应于360°接收角度模式（即，全向模式）和固定接收角度 即，方向图），通过允许接收机识别具有最大幅度的导频信号。 接收器通过向其他发射机转向天线图形零点来最小化来自其他导频信号的干扰。 结果，接收机获取有效导频信号所需的时间显着减少。

公开(公告)号：US07974331B2

公开(公告)日：2011-07-05

申请号：US10500548

申请日：2002-12-09

Applicant: Luzhou Xu ,  Dong Wang

Inventor： Luzhou Xu ,  Dong Wang

IPC: H04B1/707

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B2201/70701 ,  H04L2027/0046

Abstract: Rake receivers in code division multiple access (CDMA) telecommunication comprise fingers (1,2,3) with each finger processing signal components for a particular transmission path to be able to better synchronize with a RF signal received via different paths, and a combiner (4) for combining the results originating from said fingers, and a compensator in the form of a controlled oscillator in a feedback loop. By locating a finger compensator (20-25) in a finger, said finger can handle complex situations, like Doppler shifts under high-speed conditions. Preferably, most or all fingers each comprise such a finger compensator, in which case said feedback loop can be avoided. Such a finger compensator can be hardware, software or a mixture of both when comprising a filter (21) plus an amplitude normalizer (22) between two arithmetical modules (20,25) for multiplying an input symbol signal with a conjugated previous input symbol signal and an output symbol signal with a previous output symbol signal.

Abstract translation: 码分多址（CDMA）电信中的耙式接收机包括手指（1,2,3），每个手指处理信号分量用于特定传输路径，以便能够更好地与经由不同路径接收的RF信号同步，以及组合器 4）用于组合来自所述手指的结果，以及在反馈回路中以受控振荡器的形式的补偿器。 通过将手指补偿器（20-25）定位在手指中，所述手指可以处理复杂的情况，如在高速条件下的多普勒频移。 优选地，大多数或全部手指均包括这种手指补偿器，在这种情况下可以避免所述反馈回路。 当包括在两个算术模块（20,25）之间的过滤器（21）加上幅度归一化器（22）时，这种手指补偿器可以是硬件，软件或两者的混合，用于将输入符号信号与共轭先前输入符号信号 以及具有先前输出符号信号的输出符号信号。

公开(公告)号：US07949063B2

公开(公告)日：2011-05-24

申请号：US11679541

申请日：2007-02-27

Applicant: Elias Jonsson ,  Andres Reial

Inventor： Elias Jonsson ,  Andres Reial

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04W72/12 ,  H04B1/7103 ,  H04B1/712 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0697 ,  H04B2201/70701 ,  H04B2201/709727 ,  Y02D70/40 ,  Y02D70/444

Abstract: The teachings herein disclose methods and apparatus that simplify impairment correlation estimation for received signal processing, based on determining, for any given processing interval, which impairment contributors should be considered in the estimation of overall received signal impairment correlations. These simplifications reduce computational processing requirements, allowing reduced circuit complexity and/or reduced operating power, and improve receiver performance. A corresponding transmitter and transmission method include transmitting multiple information streams to targeted receivers according to ongoing scheduling, and controlling the ongoing scheduling to reduce the number of impairment contributors considered in impairment correlation estimation at the targeted receivers. In one embodiment, a receiver identifies which impairment contributors to consider based on receiving control information. In another embodiment, the receiver identifies the impairment contributors to consider based on background processing, e.g., background determination of parametric model fitting parameters for a plurality of impairment contributors, and observing those model fitting parameters over time.

Abstract translation: 本文的教导公开了简化对接收信号处理的损害相关估计的方法和装置，其基于对于任何给定的处理间隔，在估计总体接收信号损害相关中应考虑哪些损害贡献者。 这些简化减少了计算处理要求，从而降低了电路复杂度和/或降低了操作功率，并提高了接收机性能。 相应的发射机和传输方法包括根据正在进行的调度向目标接收机发送多个信息流，并控制正在进行的调度，以减少目标接收机的损害相关估计中所考虑的损害贡献者的数量。 在一个实施例中，接收机基于接收控制信息识别要考虑的损害贡献者。 在另一个实施例中，接收机基于背景处理识别要考虑的损害贡献者，例如用于多个损害贡献者的参数模型拟合参数的背景确定，以及随时间观察这些模型拟合参数。

公开(公告)号：US07949037B2

公开(公告)日：2011-05-24

申请号：US11532589

申请日：2006-09-18

Applicant: Fatih M Ozluturk ,  David K Mesecher ,  Alexander M Jacques

Inventor： Fatih M Ozluturk ,  David K Mesecher ,  Alexander M Jacques

IPC: H04B1/00

CPC classification number: H04B1/7085 ,  H04B1/30 ,  H04B1/707 ,  H04B1/70755 ,  H04B1/7093 ,  H04B1/7115 ,  H04B2201/70701 ,  H04L25/0212 ,  H04L27/0014 ,  H04L2027/0067

Abstract: A base station for carrier offset recovery. An adaptive matched filter produces a filtered signal. A rake receiver provides relative path values of multipath components. A mixer generates channel impulse response estimates. A channel despreader despreads the filtered signal using the pseudo-noise signal generated to produce a despread channel signal of the selected channel. A pilot channel despreader despreads the filtered signal using a pseudo-noise signal generator to produce a despread pilot signal of the pilot channel. A hard decision processor determines a symbol value of the despread channel signal. A complex conjugate processor generates a complex conjugate of the symbol value as a correction signal. A phase-locked loop produces a phase correction signal to recover carrier offset.

Abstract translation: 用于载波偏移恢复的基站。 自适应匹配滤波器产生滤波信号。 耙式接收器提供多径分量的相对路径值。 混频器产生信道脉冲响应估计。 信道去扩展器使用所生成的伪噪声信号来对经滤波的信号进行解扩，以产生所选信道的解扩频道信号。 导频信道解扩器使用伪噪声信号发生器对经滤波的信号进行解扩，以产生导频信道的解扩导频信号。 硬决策处理器确定解扩频道信号的符号值。 复共轭处理器产生符号值的复共轭作为校正信号。 锁相环产生相位校正信号以恢复载波偏移。

公开(公告)号：US20110090813A1

公开(公告)日：2011-04-21

申请号：US12979318

申请日：2010-12-27

Applicant: Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takakusaki ,  Shoji Miyamoto

Inventor： Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takakusaki ,  Shoji Miyamoto

IPC: H04L12/26

CPC classification number: H04B1/7113 ,  G01S3/74 ,  H04B1/7117 ,  H04B7/0617 ,  H04B7/086 ,  H04B2201/70701 ,  H04B2201/70715 ,  H04L1/06

Abstract: A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without increasing throughput even if the power every path is low by estimating an average arrival direction of an entire set of multiple paths having the angular spread from a result of one angular spectrum by multiple correlation operation units that perform mutual correlation operations with pilot signals for baseband signals received by the array antenna, a path detection unit that detects multiple arrival path receiving timings by generating a delay profile based on output of each of the correlation operation units, a path correlation value synthesis unit that synthesizes a correlation operation value calculated in the multiple correlation operation units and an arrival direction estimation unit that collectively estimates multiple path arrival directions using output of the path correlation value synthesis unit.

Abstract translation: 具有阵列天线的接收机估计以角度扩展到达的多个路径的到达方向。 因此，即使通过多个相关运算单元从一个角度频谱的结果估计具有角度扩展的整个多个路径的整个组的平均到达方向，即使通过多个相关运算单元来估计每个路径的功率，也可以确保到达方向估计精度， 执行与阵列天线接收的基带信号的导频信号的相互关联操作;路径检测单元，通过基于每个相关运算单元的输出生成延迟分布来检测多个到达路径接收定时;路径相关值合成单元， 合成在多个相关运算单元中计算出的相关运算值和使用路径相关值合成单元的输出共同估计多个路径到达方向的到达方向估计单元。

公开(公告)号：US20110090120A1

公开(公告)日：2011-04-21

申请号：US12979305

申请日：2010-12-27

Applicant: Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takausaki ,  Shoji Miyamoto

Inventor： Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takausaki ,  Shoji Miyamoto

IPC: G01S3/16

CPC classification number: H04B1/7113 ,  G01S3/74 ,  H04B1/7117 ,  H04B7/0617 ,  H04B7/086 ,  H04B2201/70701 ,  H04B2201/70715 ,  H04L1/06

Abstract: A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without increasing throughput even if the power every path is low by estimating an average arrival direction of an entire set of multiple paths having the angular spread from a result of one angular spectrum by multiple correlation operation units that perform mutual correlation operations with pilot signals for baseband signals received by the array antenna, a path detection unit that detects multiple arrival path receiving timings by generating a delay profile based on output of each of the correlation operation units, a path correlation value synthesis unit that synthesizes a correlation operation value calculated in the multiple correlation operation units and an arrival direction estimation unit that collectively estimates multiple path arrival directions using output of the path correlation value synthesis unit.

公开(公告)号：US07929592B1

公开(公告)日：2011-04-19

申请号：US09701705

申请日：2000-03-31

Applicant: Yukihiko Okumura ,  Hidehiro Ando ,  Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

Inventor： Yukihiko Okumura ,  Hidehiro Ando ,  Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

IPC: H04B1/69 ,  H04B1/707

CPC classification number: H04L25/0234 ,  H04B1/707 ,  H04B1/7115 ,  H04B2201/70701 ,  H04L25/0228

Abstract: A channel estimation value of data symbols of a data channel is calculated by weighting and averaging pilot symbols in a parallel time multiplexing method. Also, a channel estimation value of data symbols during each data symbol interval is calculated by dividing data symbols in a slot into a plurality of data symbol intervals, selecting pilot symbols suitable for calculation of a channel estimation value of data symbols during each data symbol interval and weighting and averaging that pilot symbols. Also, a fading frequency is detected based on an inner product value of pilot symbols. Weighting factors are changed based on the detected fading frequency. Also, a channel estimation value is calculated by weighting and averaging pilot signals using a plurality of weighting sequences. The calculated channel estimation value is used to demodulate received data.

Abstract translation: 通过并行时间复用方法对导频符号进行加权和平均来计算数据信道的数据符号的信道估计值。 此外，通过将时隙中的数据符号划分为多个数据符号间隔来计算每个数据符号间隔期间的数据符号的信道估计值，在每个数据符号间隔期间选择适合于计算数据符号的信道估计值的导频符号 并对该导频符号进行加权和平均。 此外，基于导频符号的内积值来检测衰落频率。 加权因子根据检测到的衰落频率而改变。 此外，通过使用多个加权序列对导频信号进行加权和平均来计算信道估计值。 所计算的信道估计值用于解调接收的数据。

公开(公告)号：US07912999B2

公开(公告)日：2011-03-22

申请号：US10613897

申请日：2003-07-02

Applicant: Robert W. Boesel ,  Theodore J. Myers ,  Tien Q. Nguyen

Inventor： Robert W. Boesel ,  Theodore J. Myers ,  Tien Q. Nguyen

IPC: G06F3/00 ,  G06F5/00 ,  G06F1/00 ,  G06F1/04 ,  H04J11/00 ,  H04B7/216 ,  H04B1/00 ,  H04L12/28

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B2201/70701 ,  H04B2201/70707 ,  H04B2201/7071

Abstract: A buffering apparatus to process digital communication signals includes a plurality of buffers, a processing unit, and programmed memory. The programmed memory has instructions directing the processing unit to process the digital samples corresponding to a group of symbols to be processed in a plurality of buffers. The digital samples start in a first buffer of the plurality of buffers and end in a second buffer of the plurality of buffers. The digital samples are received at a third buffer of the plurality of buffers during the processing of the digital samples.

Abstract translation: 处理数字通信信号的缓冲装置包括多个缓冲器，处理单元和编程存储器。 编程存储器具有指示处理单元处理与要在多个缓冲器中处理的一组符号相对应的数字样本的指令。 数字样本在多个缓冲器的第一缓冲器中开始并在多个缓冲器的第二缓冲器中结束。 数字样本在数字样本的处理期间在多个缓冲器的第三缓冲器处被接收。