公开(公告)号：US08149763B2

公开(公告)日：2012-04-03

申请号：US12296444

申请日：2007-04-03

申请人： Xiaohui Wang ,  Elias Jonsson

发明人： Xiaohui Wang ,  Elias Jonsson

IPC分类号： H04B7/005 ,  H04W52/00

CPC分类号： H04W52/44 ,  H04W52/12 ,  H04W52/20 ,  H04W52/24

摘要： A power level of signals transmitted in a wireless communications system under a first or a second scrambling code, is controlled in an inner power control loop, where a quality measure is repetitively estimated and control commands generated from the quality measure and a quality measure reference value, which in an outer power control loop is adjusted in dependence on a performance level calculated for signals received during a time interval. A first value is adjusted in dependence on a performance level for time intervals with all signals transmitted under the first scrambling code and used during such time intervals. A second value is adjusted in dependence on a performance level for time intervals with at least some signals transmitted under the second scrambling code and used during at least a part of such time intervals.

摘要翻译： 在第一或第二扰码下在无线通信系统中发送的信号的功率电平在内部功率控制环路中被控制，其中重复地估计质量测量值，并且从质量测量和质量测量参考值产生的控制命令 ，其在外部功率控制环路中根据在时间间隔期间接收的信号计算的性能水平来调整。 根据在第一扰码下传输的所有信号的时间间隔的性能水平来调整第一值并且在这样的时间间隔期间使用第一值。 根据具有至少一些在第二扰码下传送的信号的时间间隔的性能水平来调整第二值，并且在这样的时间间隔的至少一部分期间使用第二值。

公开(公告)号：US20110188591A1

公开(公告)日：2011-08-04

申请号：US13081031

申请日：2011-04-06

申请人： Elias Jonsson ,  Andres Reial

发明人： Elias Jonsson ,  Andres Reial

IPC分类号： H04W72/00 ,  H04L27/28

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

摘要： 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.

摘要翻译： 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：US07949063B2

公开(公告)日：2011-05-24

申请号：US11679541

申请日：2007-02-27

申请人： Elias Jonsson ,  Andres Reial

发明人： Elias Jonsson ,  Andres Reial

IPC分类号： H04B7/02 ,  H04L1/02

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

摘要： 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.

摘要翻译： 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：US07889800B2

公开(公告)日：2011-02-15

申请号：US11755887

申请日：2007-05-31

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04L27/28

CPC分类号： H04L27/2649 ,  H04L25/067 ,  H04L27/38

摘要： Methods and receiver circuits for determining and employing decision boundary estimates for use in de-mapping QAM symbols in an OFDM receiver are disclosed. The disclosed methods efficiently use memory resources, while taking account of the frequency-selective and time-varying nature of the signal propagation. An OFDM receiver calculates a decision boundary estimate using QAM-modulated symbols selected from a group of OFDM tones and determines soft bit values for symbols selected from an adjacent tone using the decision boundary estimate. The receiver updates the decision boundary estimate using the symbols from the adjacent tone and determines soft bit values for symbols selected from a next-adjacent tone using the updated decision boundary estimate. Once the decision boundary estimate has been updated and the soft bit values have been determined for each tone, the symbol data for that tone may be discarded.

摘要翻译： 公开了用于确定和使用用于解调映射OFDM接收器中的QAM符号的判定边界估计的方法和接收机电路。 所公开的方法在考虑信号传播的频率选择性和时变性的同时有效地使用存储器资源。 OFDM接收器使用从一组OFDM音调组中选出的QAM调制符号来计算判定边界估计，并使用判定边界估计来确定从相邻音调中选择的符号的软比特值。 接收器使用来自相邻音调的符号来更新判定边界估计，并使用更新的判定边界估计来确定从下一相邻音调中选择的符号的软比特值。 一旦更新了判定边界估计并且已经为每个音调确定了软比特值，则可以丢弃该音调的符号数据。

公开(公告)号：US07856065B2

公开(公告)日：2010-12-21

申请号：US11743298

申请日：2007-05-02

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04L27/28

CPC分类号： H04L27/2647 ,  H04L1/06 ,  H04L27/3863

摘要： Methods and apparatus for processing received OFDM signals to compensate for distortions caused by IQ imbalances are disclosed. Receiver circuits may be configured to demodulate symbols from a first logical channel, using an uncompensated received OFDM signal that includes the effects of those distortions. Receiver circuits may be further configured to calculate an IQ imbalance parameter, using the demodulated symbols, for use in compensating the received OFDM signal to reduce the effects of the IQ imbalances. The compensated signal produced thereby may be used for demodulating symbols from a second logical channel, perhaps corresponding to a user data channel.

摘要翻译： 公开了用于处理接收的OFDM信号以补偿由IQ失衡引起的失真的方法和装置。 接收器电路可以被配置为使用包括这些失真的影响的未补偿的接收OFDM信号来解调来自第一逻辑信道的符号。 接收机电路还可以被配置为使用解调符号来计算IQ不平衡参数，以用于补偿接收的OFDM信号以减少IQ不平衡的影响。 由此产生的补偿信号可以用于解调来自第二逻辑信道的符号，可能对应于用户数据信道。

公开(公告)号：US07787845B2

公开(公告)日：2010-08-31

申请号：US11856233

申请日：2007-09-17

申请人： Bengt Lindoff ,  Elias Jonsson

发明人： Bengt Lindoff ,  Elias Jonsson

IPC分类号： H04B17/00

CPC分类号： H04B17/382 ,  H04B17/26 ,  H04B17/318 ,  H04W36/30

摘要： The method and apparatus described herein uses variable length snapshot periods to determine signal strength measurements. A mobile station determines the measurement bandwidth associated with a base station, and sets the snapshot period based on the measurement bandwidth. The mobile station determines the signal strength of serving and neighboring cells during snapshot periods. Such signal strength measurements may be used to assist and/or direct handover operations.

摘要翻译： 本文描述的方法和装置使用可变长度的快照周期来确定信号强度测量。 移动台确定与基站相关联的测量带宽，并根据测量带宽设置快照周期。 移动台在快照期间确定服务和相邻小区的信号强度。 这种信号强度测量可用于辅助和/或直接切换操作。

公开(公告)号：US20100215083A1

公开(公告)日：2010-08-26

申请号：US12391371

申请日：2009-02-24

申请人： Elias Jonsson ,  Oskar Drugge

发明人： Elias Jonsson ,  Oskar Drugge

IPC分类号： H04B1/707

CPC分类号： H04B1/7117 ,  H04B2201/7071 ,  H04L25/0216 ,  H04L27/2649

摘要： A multi-carrier RAKE receiver is described herein. The multi-carrier RAKE receiver distributes RAKE fingers between a plurality of received carriers based on a comparison between the signal-to-interference ratios (SIRs) determined for each carrier. In one embodiment, the RAKE fingers are distributed evenly between the carriers when a comparison between the largest and smallest SIR is less than or equal to a threshold. In another embodiment, the RAKE fingers are distributed to favor the carrier(s) with the strongest SIR(s) when the comparison between the largest and smallest SIR exceeds the threshold. By distributing the RAKE fingers to favor the carriers with the strongest SIRs, the embodiments of the present invention enable the system designers to limit the total number of available RAKE fingers without sacrificing performance.

摘要翻译： 本文描述了多载波RAKE接收机。 基于为每个载波确定的信号干扰比（SIR）之间的比较，多载波RAKE接收机在多个接收载波之间分配RAKE指。 在一个实施例中，当最大SIR和最小SIR之间的比较小于或等于阈值时，RAKE指状物均匀分布在载波之间。 在另一个实施例中，当最大和最小SIR之间的比较超过阈值时，RAKE指状分配以支持具有最强SIR的载波。 通过分配RAKE手指以使SIR具有最强的载波，本发明的实施例使得系统设计者能够在不牺牲性能的情况下限制可用的RAKE手指的总数。

公开(公告)号：US20080298227A1

公开(公告)日：2008-12-04

申请号：US11756172

申请日：2007-05-31

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04J11/00

CPC分类号： H04L27/2647 ,  H04L5/023 ,  H04L25/0206 ,  H04L25/0228 ,  H04L27/261

摘要： In an OFDM communications system receiver, channel estimates are processed to remove or reduce noise, exploiting the orthogonality of pilot patterns. The de-noised channel estimates are then used to compute inter-cell interference. The noise effects of orthogonal pilot patterns are selectively removed from channel samples in estimating inter-cell interference, depending on whether data subcarriers are subject to the same interference as pilot subcarriers, and whether data subcarriers are subject to interference from sectors with pilot patterns orthogonal to those in the transmitting sector. A further calculation removes noise from cells not identified by an orthogonal pilot sequence, which may be particularly applicable when large variations exist in the frequency domain of the propagation channel across a pilot pattern.

摘要翻译： 在OFDM通信系统接收机中，处理信道估计以消除或降低噪声，利用导频模式的正交性。 然后使用去噪信道估计来计算小区间干扰。 取决于数据副载波是否受到与导频子载波相同的干扰，以及数据副载波是否受到来自与导频模式正交的导频模式的扇区的干扰，从而在估计小区间干扰中从信道样本中选择性地去除正交导频模式的噪声影响 那些在传输部门。 进一步的计算消除了未被正交导频序列识别的小区的噪声，当通过导频模式的传播信道的频域存在大的变化时，这可能特别适用。

公开(公告)号：US07376195B2

公开(公告)日：2008-05-20

申请号：US10763755

申请日：2004-01-23

申请人： Elias Jonsson ,  Andreas Cedergren

发明人： Elias Jonsson ,  Andreas Cedergren

IPC分类号： H04L5/12

CPC分类号： H04B1/7113 ,  H04B1/712

摘要： Methods and apparatus that do not require a memory between the combiner and decision boundary estimator in a digital communications receiver and that enjoy unaltered performance are described. The methods and apparatus include new ways of estimating bit decision boundaries and may also include new ways of estimating soft bit values.

摘要翻译： 描述了在数字通信接收机中不需要组合器和判决边界估计器之间的存储器并且享受未改变的性能的方法和装置。 所述方法和装置包括估计比特判定边界的新方法，还可以包括估计软比特值的新方式。

公开(公告)号：US07366230B2

公开(公告)日：2008-04-29

申请号：US10499071

申请日：2002-12-18

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04B1/38 ,  H04B1/66 ,  H04N7/12 ,  H04N11/02

CPC分类号： H04W52/125 ,  H04W52/54

摘要： A power control unit (500) for a power control system in a mobile communication system, the power control unit (500) comprising an inner power control loop element (503, 507), which generates a transmit power control command (504), and an outer power control loop element (516) connected to the inner power control loop element (503, 507), the outer power control loop element (516) being configured for providing a target value (506) to the inner power control loop element (503, 507). The outer power control loop element (516) comprises a soft information estimator (509) connected to at least one outer loop regulator (501, 502), wherein the soft information estimator (509) is configured to provide a soft information estimate (510) to the at least one outer loop regulator (503).

摘要翻译： 一种用于移动通信系统中的功率控制系统的功率控制单元（500），所述功率控制单元（500）包括产生发射功率控制命令（504）的内部功率控制环路元件（503,507），以及 外部功率控制回路元件（516），其被配置为向所述内部功率控制回路元件（503,507）提供目标值（506） 503，507）。 外部功率控制环路元件（516）包括连接到至少一个外部环路调节器（501,502）的软信息估计器（509），其中软信息估计器（509）被配置为提供软信息估计（510） 至少一个外环调节器（503）。