公开(公告)号：US08515435B2

公开(公告)日：2013-08-20

申请号：US11045877

申请日：2005-01-28

Applicant: Leonid Krasny ,  Karl Molnar ,  Jung-Fu Thomas Cheng ,  Stephen Grant ,  Yi-Pin Eric Wang

Inventor： Leonid Krasny ,  Karl Molnar ,  Jung-Fu Thomas Cheng ,  Stephen Grant ,  Yi-Pin Eric Wang

IPC: H04W72/00

CPC classification number: H04B7/0686 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/065 ,  H04B7/0689 ,  H04B7/0691 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/003 ,  H04L1/06

Abstract: An adaptive transmission scheme provides multiple levels of adaptation. At a first level, a selection is made between a limited feedback or limited feedback scheme and a rich feedback scheme. At a second level of adaptation, a diversity mode is selected. Additional levels of adaptation could be employed.

Abstract translation: 自适应传输方案提供多级适配。 在第一级，在有限反馈或有限反馈方案和丰富的反馈方案之间进行选择。 在第二级适配时，选择分集模式。 可以采用额外的适应水平。

公开(公告)号：US20130136087A1

公开(公告)日：2013-05-30

申请号：US13750109

申请日：2013-01-25

Applicant: Elias Jonsson ,  Andres Reial

Inventor： Elias Jonsson ,  Andres Reial

IPC: H04W72/12

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

Abstract: A method of transmitting communication signals to a plurality of targeted receivers includes transmitting one or more information streams for individual ones of the targeted receivers according to ongoing transmission scheduling, and controlling the ongoing transmission scheduling to reduce the number of impairment contributors that must be considered in received signal processing by scheduled ones of the targeted receivers. In one embodiment the controlling comprises scheduling the targeted receivers to avoid transmissions to more than one targeted receiver at a time. In the same or another embodiment, the controlling comprises at least one of using equal transmit power allocations for one or more information streams, and using fixed transmit power allocations for one or more of the information streams.

Abstract translation: 将通信信号发送到多个目标接收机的方法包括根据正在进行的传输调度向目标接收机中的一个发送一个或多个信息流，并且控制正在进行的传输调度以减少必须考虑的损害贡献者的数量 由目标接收机中的预定接收机接收信号处理。 在一个实施例中，控制包括调度目标接收机以避免一次传送到多于一个的目标接收机。 在相同或另一个实施例中，控制包括对一个或多个信息流使用相等的发射功率分配以及对于一个或多个信息流使用固定的发射功率分配中的至少一个。

公开(公告)号：US08428106B2

公开(公告)日：2013-04-23

申请号：US12138655

申请日：2008-06-13

Applicant: Douglas A. Cairns ,  Yi-Pin Eric Wang ,  Håkan Bjorkegen

Inventor： Douglas A. Cairns ,  Yi-Pin Eric Wang ,  Håkan Bjorkegen

IPC: H04B1/00

CPC classification number: H04L25/0242 ,  H04B1/71052 ,  H04B1/712 ,  H04B2201/709727 ,  H04L25/0208

Abstract: The technology comprises method(s) and apparatus for operating a telecommunications system. In its basic form the method comprises providing plural channelization codes for potential use by an uplink receiver; using unused channelization codes of the plural codes to generate an estimate of an impairment covariance matrix; and using the estimate of the impairment covariance matrix to form a processing parameter. For example, the processing parameter can be one or more weight values which, in turn, are can be used for generating a combined output signal.

Abstract translation: 该技术包括用于操作电信系统的方法和装置。 在其基本形式中，该方法包括提供用于上行链路接收机的潜在用途的多个信道化码; 使用所述多个代码的未使用的信道化码来生成损害协方差矩阵的估计; 并使用损伤协方差矩阵的估计来形成处理参数。 例如，处理参数可以是一个或多个加权值，其又可以用于产生组合的输出信号。

公开(公告)号：US20130039389A1

公开(公告)日：2013-02-14

申请号：US13642116

申请日：2010-04-20

Applicant: Hai Wang

Inventor： Hai Wang

IPC: H04B1/707

CPC classification number: H04B1/712 ,  H04B2201/709727

Abstract: A method and arrangement of increasing impairment co-variance matrix Ru estimation accuracy in downlink in a user equipment in a communication network system. De-spread is performed on HS-DSCH symbols to form a matrix X of de-spread symbols. The matrix X and channel estimates hc from CPiCH and modulation scheme information are used to form a matrix S of recovered symbols in hard value. The matrix X and the channel estimates hc, the modulation scheme information and the matrix S output are used to increase the estimation accuracy of the matrix S. The previous step is repeated until the output symbols are the same as the input symbols or the number of iterations reaches a pre-defined maximum value. The matrix X and the matrix S with increased estimation accuracy are used to form an impairment co-variance matrix Ru estimate.

Abstract translation: 在通信网络系统中的用户设备中下行链路中增加损害协方差矩阵Ru估计精度的方法和装置。 对HS-DSCH符号执行去扩展以形成解扩符号的矩阵X. 使用矩阵X和来自CPiCH的信道估计hc和调制方案信息来形成具有硬值的恢复符号的矩阵S. 矩阵X和信道估计hc，调制方案信息和矩阵S输出用于增加矩阵S的估计精度。重复上一步骤，直到输出符号与输入符号相同或者输入符号数 迭代达到预定义的最大值。 使用具有增加的估计精度的矩阵X和矩阵S来形成损伤协方差矩阵Ru估计。

公开(公告)号：US20120302279A1

公开(公告)日：2012-11-29

申请号：US13569290

申请日：2012-08-08

Applicant: Xiaohui Wang ,  Jonas Ohlsson ,  Magnus Öst

Inventor： Xiaohui Wang ,  Jonas Ohlsson ,  Magnus Öst

IPC: H04W52/20 ,  H04W52/12

CPC classification number: H04W52/12 ,  H04B2201/709727 ,  H04W52/20 ,  H04W52/241

Abstract: Outer-loop power control methods and apparatus are disclosed. In an exemplary embodiment, a short-term block error rate is measured for a received signal, and a coarse adjustment to a target signal-to-interference ratio (SIR) is calculated as a function of the short-term block error rate, a target block error rate, and a first loop tuning parameter. In some embodiments, a fine adjustment to the target SIR is also calculated, as a function of a smoothed block error rate, the target block error rate, and a second loop tuning parameter. The coarse adjustment provides quick responsiveness to received block errors, while the fine adjustment moderates the coarse adjustments by accounting for a longer-term view of the received block error rate. The target SIR adjustments disclosed herein may be computed in each of several iterations of an outer-loop power control loop.

Abstract translation: 公开了外环功率控制方法和装置。 在示例性实施例中，针对接收信号测量短期块错误率，并且根据短期块错误率计算对目标信号干扰比（SIR）的粗略调整， 目标块错误率和第一个循环调整参数。 在一些实施例中，还根据平滑的块错误率，目标块错误率和第二环路调整参数来计算对目标SIR的精细调整。 粗略调整提供对接收到的块错误的快速响应，而微调通过考虑接收到的块错误率的长期视图来缓和粗调。 可以在外环功率控制回路的几次迭代中的每一个中计算本文公开的目标SIR调整。

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：US20120155574A1

公开(公告)日：2012-06-21

申请号：US13403369

申请日：2012-02-23

Applicant: Douglas Cairns ,  Elias Jonsson

Inventor： Douglas Cairns ,  Elias Jonsson

IPC: H04L27/06 ,  H03D1/24

CPC classification number: H04L25/0236 ,  H04B2201/70701 ,  H04B2201/709727 ,  H04L1/0017 ,  H04L1/0041 ,  H04L1/0068 ,  H04L25/021 ,  H04L25/0226 ,  H04L25/03044 ,  H04L25/03324 ,  H04L25/061 ,  H04L27/0012 ,  H04L27/227 ,  H04L27/3455 ,  H04L27/3818 ,  H04L2001/0098 ,  H04L2025/03401 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04L2025/03509 ,  H04L2025/03796 ,  H04L2027/0061 ,  H04L2027/0093

Abstract: A receiver and method for receiving and processing a sequence of transmitted symbols in a digital communication system utilizing soft pilot symbols. A set of soft pilot symbols are transmitted with higher reliability than the remaining symbols in the sequence by modulating the soft pilot symbols with a lower order modulation such as BPSK or QPSK while modulating the remaining symbols with a higher order modulation such as 16 QAM or 64 QAM. The receiver knows the modulation type and location (time/frequency/code) of the soft pilot symbols, and demodulates them first. The receiver uses the demodulated soft pilot symbols as known symbols to estimate parameters of the received radio signal. Unlike traditional fixed pilots, the soft pilots still carry some data. Additionally, the soft pilots are particularly helpful in establishing the amplitude reference essential in demodulating the higher order modulation symbols.

Abstract translation: 一种用于在利用软导频符号的数字通信系统中接收和处理发送符号序列的接收机和方法。 通过用诸如BPSK或QPSK之类的较低阶调制来调制软导频符号，同时以诸如16QAM或64等更高阶调制调制剩余符号，发送一组软导频符号比该序列中的剩余符号更高的可靠性。 QAM。 接收机知道软导频符号的调制类型和位置（时间/频率/码），并首先解调它们。 接收机使用解调的软导频符号作为已知符号来估计所接收的无线电信号的参数。 与传统的固定飞行员不同，软飞行员仍然携带一些数据。 此外，软导频器在建立解调高阶调制符号时必不可少的幅度参考是特别有用的。

公开(公告)号：US20120076248A1

公开(公告)日：2012-03-29

申请号：US12893001

申请日：2010-09-29

Applicant: Anders Rosenqvist

Inventor： Anders Rosenqvist

IPC: H03D1/04

CPC classification number: H04B1/712 ,  H04B2201/709727

Abstract: A method and apparatus for reducing the computational load associated with computing weighting factors for wireless signals received at a wireless receiver is disclosed herein. The method and apparatus reuses a covariance factor matrix to compute multiple sets of weighting factors for multiple received signals. Particular embodiments factor a covariance matrix determined for a first received signal to determine a covariance factor matrix, and use the covariance factor matrix to determine a set of weighting factors for the first received signal as well as to determine additional sets of weighting factors for one or more additional received signals. The different received signals may be associated with different times, different channelization codes, and/or different frequencies. The weighting factors may be used to weight and combine received signals in a GRAKE receiver or chip equalizer. The weighting factors may also be used to determine a signal quality metric.

Abstract translation: 本文公开了一种用于减少与在无线接收器处接收的无线信号的计算加权因子相关联的计算负荷的方法和装置。 该方法和装置重新使用协方差因子矩阵来计算多个接收信号的多组加权因子。 特定实施例考虑为第一接收信号确定的协方差矩阵以确定协方差因子矩阵，并且使用协方差因子矩阵来确定用于第一接收信号的一组加权因子，以及确定一组或多个加权因子 更多的附加信号。 不同的接收信号可以与不同的时间，不同的信道化码和/或不同的频率相关联。 加权因子可用于在GRAKE接收机或码片均衡器中对接收到的信号进行加权和组合。 加权因子也可以用于确定信号质量度量。

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：US07957485B2

公开(公告)日：2011-06-07

申请号：US12036337

申请日：2008-02-25

Applicant: Douglas A. Cairns ,  Stephen J. Grant

Inventor： Douglas A. Cairns ,  Stephen J. Grant

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04L25/03898 ,  H04B1/712 ,  H04B7/0413 ,  H04B7/0619 ,  H04B17/21 ,  H04B17/336 ,  H04B2201/70707 ,  H04B2201/709727

Abstract: A model-based technique for estimating impairment covariance associated with a MIMO signal is disclosed. In an exemplary method, an impairment model is constructed for a received composite information signal comprising at least a first data stream transmitted from first and second antennas according to a first antenna weighting vector. The impairment model includes first and second model terms corresponding to the first and second antennas, respectively, but in several embodiments does not include a cross-antenna interference term. In another embodiment, an impairment model for a received MIMO signal is constructed by computing an impairment model term for each antenna and an additional term to account for preceding interference in a single-stream MIMO transmission scenario. The impairment terms are grouped so that only two associated scaling terms are unknown; values for the scaling terms are estimated by fitting the model to measured impairment covariance values.

Abstract translation: 公开了一种用于估计与MIMO信号相关的损害协方差的基于模型的技术。 在一个示例性方法中，针对接收的复合信息信号构建损伤模型，所述复合信息信号包括根据第一天线加权向量从第一和第二天线发送的至少第一数据流。 损伤模型分别包括对应于第一和第二天线的第一和第二模型项，但是在几个实施例中不包括横向天线干扰项。 在另一个实施例中，通过计算每个天线的损伤模型项和用于考虑单流MIMO传输场景中的预编码干扰的附加项来构造用于所接收的MIMO信号的损伤模型。 损害条款被分组，使得只有两个相关联的缩放术语是未知的; 通过将模型拟合到测量的损害协方差值来估计缩放术语的值。