公开(公告)号：US20050105647A1

公开(公告)日：2005-05-19

申请号：US10920928

申请日：2004-08-18

申请人： Leif Wilhelmsson ,  Bo Bernhardsson ,  Lennart Andersson

发明人： Leif Wilhelmsson ,  Bo Bernhardsson ,  Lennart Andersson

IPC分类号： H04L25/02 ,  H04L27/26 ,  H03K9/00

CPC分类号： H04L25/0234 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0222 ,  H04L27/2647

摘要： Methods and apparatus that achieve good channel estimation without using unnecessarily complex interpolation filters are described. Adaptive interpolation filtering of a signal in a receiver includes determining at least one correlation function parameter of the channel and determining a filter configuration based on the correlation function parameter. Interpolation filtering is then performed on the signal using the determined filter configuration. The interpolation may be performed in time, where a Doppler frequency shift can serve as the correlation function parameter, or in frequency, where a root mean square or maximum delay spread can serve as the correlation function parameter, or both. A worst case signal-to-noise ratio may be used in determining the filter configuration, or, optionally, the signal-to-noise ratio can determined in real time. The filter configuration can be determined in real time or selected from one of a plurality of predetermined configurations having different complexities.

摘要翻译： 描述了不使用不必要的内插滤波器实现良好信道估计的方法和装置。 接收机中的信号的自适应插值滤波包括确定信道的至少一个相关函数参数，并且基于相关函数参数来确定滤波器配置。 然后使用确定的滤波器配置对信号执行插值滤波。 可以在时间上执行插值，其中多普勒频移可以用作相关函数参数，或频率，其中均方根或最大延迟扩展可以用作相关函数参数，或两者。 可以使用最坏情况的信噪比来确定滤波器配置，或者可选地，可以实时地确定信噪比。 滤波器配置可以实时确定或者从具有不同复杂度的多个预定配置之一中选择。

公开(公告)号：US20050075122A1

公开(公告)日：2005-04-07

申请号：US10612373

申请日：2003-07-02

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Torgny Palenius

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Torgny Palenius

IPC分类号： H04B7/005 ,  H04W52/22 ,  H04W52/28 ,  H04W52/36 ,  H04Q7/20

CPC分类号： H04W52/367 ,  H04W52/228 ,  H04W52/283 ,  H04W52/288

摘要： A method for controlling transmission power from a wireless transceiver. Signal to interference ratios (SIRs) are estimated for a signal that is received from another wireless device. An out-of-sync condition between the wireless transceiver and the other wireless device is identified based on the SIRs. Change of the transmission power from the wireless transceiver is restricted based on the SIRs and when an out-of-sync condition has not been identified.

摘要翻译： 一种用于控制来自无线收发器的发射功率的方法。 对于从另一无线设备接收到的信号估计信号与干扰比（SIR）。 基于SIR识别无线收发器与另一无线设备之间的不同步状态。 来自无线收发器的发射功率的改变基于SIR被限制并且当不同步条件尚未被识别时被限制。

公开(公告)号：US08744026B2

公开(公告)日：2014-06-03

申请号：US12903836

申请日：2010-10-13

申请人： Anders Rosenqvist ,  Niklas Andgart ,  Bo Bernhardsson

发明人： Anders Rosenqvist ,  Niklas Andgart ,  Bo Bernhardsson

IPC分类号： H04B1/10

CPC分类号： H04L25/023 ,  H04L25/03305 ,  H04L2025/03401 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03426

摘要： A method of detecting a desired signal within a composite signal provides for suppression of interfering signal(s). The method, implemented in a wireless communication apparatus, for example, includes receiving the composite signal and obtaining sample values therefrom. At least some of the sample values include desired and interfering signal components. The method further includes generating an interfering signal channel estimate by: forming sample pairs for some or all of the sample values; identifying sample pairs of interest as those sample pairs in which the interfering signal component is the same; and calculating the interfering signal channel estimate as an average value determined from one or more of the sample pairs of interest. The method further includes detecting desired signal symbols from the composite signal in a joint detection process that functionally depends on the interfering signal channel estimate.

摘要翻译： 在复合信号内检测期望信号的方法提供了抑制干扰信号。 例如，在无线通信装置中实现的方法包括接收复合信号并从中获取样本值。 至少一些样本值包括期望的和干扰的信号分量。 该方法还包括：通过以下方式产生干扰信号信道估计：为样本值的某些或全部形成样本对; 将感兴趣的样本对识别为其中干扰信号分量相同的样本对; 以及将干扰信号信道估计值计算为从感兴趣的一个或多个样本对确定的平均值。 该方法还包括在功能上取决于干扰信号信道估计的联合检测过程中从复合信号中检测所需信号符号。

公开(公告)号：US08594694B2

公开(公告)日：2013-11-26

申请号：US13301329

申请日：2011-11-21

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson ,  Torgny Palenius ,  Andreas Wilde ,  Werner Anzill

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson ,  Torgny Palenius ,  Andreas Wilde ,  Werner Anzill

IPC分类号： H04W72/00

CPC分类号： H04L1/0026 ,  H04B1/036 ,  H04B1/40 ,  H04L1/0028 ,  H04L1/0031 ,  H04L1/0036 ,  H04L1/1607 ,  H04W72/1252 ,  H04W72/1284

摘要： A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received.

摘要翻译： 移动通信系统中的用户设备（UE）以减轻或避免UE中的过载状况的方式来操作。 这涉及操作UE的接收器以经由信道接收一个或多个数据块。 响应于检测到用户设备过载状况，向服务基站报告信道质量指示符（CQI）值，其中报告的CQI值表示低于信道的实际质量的信道质量。 然后以与报告的CQI值一致的方式操作UE。 UE过载条件包括过热，并且无法以接收到的数据块的速率处理接收到的数据块。

公开(公告)号：US08472538B2

公开(公告)日：2013-06-25

申请号：US12746604

申请日：2008-12-08

申请人： Leif Wilhelmsson ,  Bo Bernhardsson ,  Lars Björkman

发明人： Leif Wilhelmsson ,  Bo Bernhardsson ,  Lars Björkman

IPC分类号： H04L27/28

CPC分类号： H04L25/022 ,  H04L5/0048 ,  H04L25/0232 ,  H04L27/2647 ,  H04L27/2662

摘要： Methods for calculating a delay spread estimate in an OFDM-receiver are described, along with computer program products and electronic apparatuses for performing the methods. The methods comprise determining a position of an FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal and using the determined position to obtain a first OFDM-symbol from the received OFDM-signal. An FFT is applied to the first OFDM-symbol to produce an FFT-output signal. A frequency dependent phase rotation component of the FFT-output signal is determined and removed from the FFT-output signal. A number of zero-crossings of at least one of a real component and an imaginary component of a transfer function of a channel, over which the received OFDM-signal has been transmitted, derived from the FFT-output signal where the frequency dependent phase rotation component has been removed is determined, and a delay spread estimate is calculated based on the determined number of zero-crossings.

摘要翻译： 与用于执行方法的计算机程序产品和电子设备一起描述了用于计算OFDM接收机中的延迟扩展估计的方法。 所述方法包括相对于所接收的OFDM信号的一个或多个OFDM符号确定FFT窗口的位置，并且使用所确定的位置从接收的OFDM信号中获得第一OFDM符号。 对第一OFDM符号应用FFT以产生FFT输出信号。 FFT输出信号的频率相关相位旋转分量被确定并从FFT输出信号中去除。 频率依赖相位旋转的FFT输出信号导出传输函数的传输函数的实数分量和虚分量中的至少一个的多个零交叉 已经去除了分量，并且基于确定的过零点数来计算延迟扩展估计。

公开(公告)号：US20120064909A1

公开(公告)日：2012-03-15

申请号：US13301329

申请日：2011-11-21

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson ,  Torgny Palenius ,  Andreas Wilde ,  Werner Anzill

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson ,  Torgny Palenius ,  Andreas Wilde ,  Werner Anzill

IPC分类号： H04W72/04 ,  H04W24/00

CPC分类号： H04L1/0026 ,  H04B1/036 ,  H04B1/40 ,  H04L1/0028 ,  H04L1/0031 ,  H04L1/0036 ,  H04L1/1607 ,  H04W72/1252 ,  H04W72/1284

摘要： A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received.

摘要翻译： 移动通信系统中的用户设备（UE）以减轻或避免UE中的过载状况的方式操作。 这涉及操作UE的接收器以经由信道接收一个或多个数据块。 响应于检测到用户设备过载状况，向服务基站报告信道质量指示符（CQI）值，其中报告的CQI值表示低于信道的实际质量的信道质量。 然后以与报告的CQI值一致的方式操作UE。 UE过载条件包括过热，并且无法以接收到的数据块的速率处理接收到的数据块。

公开(公告)号：US20110176466A1

公开(公告)日：2011-07-21

申请号：US12719359

申请日：2010-03-08

申请人： Bengt Lindoff ,  Bo Bernhardsson

发明人： Bengt Lindoff ,  Bo Bernhardsson

IPC分类号： H04W52/02 ,  H04L27/00

CPC分类号： H04W52/0238 ,  H04L5/0007 ,  H04L25/0224 ,  H04W52/0225 ,  Y02D70/1262 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

摘要： According to various embodiments of the methods and apparatus disclosed herein, a “micro-sleep” functionality is selectively enabled in a wireless receiver, based on an evaluation of channel conditions, traffic characteristics, or both. When micro-sleep operation is appropriate, such as when an estimated signal-to-interference ratio is higher than a pre-determined threshold, one or more receiver circuits in a mobile station can be de-activated for a portion of a sub-frame (or other transmission-time interval) that generally carries traffic data but is not currently carrying data targeted to the mobile station. In this manner, significant power savings can be achieved, independently of or in addition to any power savings provided by existing discontinuous-receive (DRX) technologies.

摘要翻译： 根据本文公开的方法和装置的各种实施例，基于对信道条件，业务特性或两者的评估，在无线接收机中选择性地启用“微睡眠”功能。 当微睡眠操作是适当的时，例如当估计的信号干扰比高于预定阈值时，移动台中的一个或多个接收器电路可以对于子帧的一部分被去激活 （或其他传输时间间隔），其通常携带业务数据，但是当前不携带针对移动站的数据。 以这种方式，可以独立于现有不连续接收（DRX）技术提供的任何功率节省或除了由现有不连续接收（DRX）技术提供的任何功率节省）之外可实现显着的功率节省。

公开(公告)号：US07684312B2

公开(公告)日：2010-03-23

申请号：US11276384

申请日：2006-02-27

申请人： Bengt Lindoff ,  Thomas Olsson ,  Bo Bernhardsson

发明人： Bengt Lindoff ,  Thomas Olsson ,  Bo Bernhardsson

IPC分类号： H04J11/00

CPC分类号： H04L27/2647 ,  H04W28/14 ,  H04W68/00

摘要： A method and corresponding apparatus for fast FFT processing of paging information includes receiving an analog signal that is converted to a first digital signal and digitally filtered through a first filter having a first bandwidth (BWA) to obtain a second digital signal. The second digital signal is stored in a buffer. The first digital signal is further digitally filtered through a second filter having a second bandwidth (BWB) to obtain a third digital signal. An FFTM processing of the third digital signal is initiated and simultaneously, an FFTN processing of the second digital signal is initiated. The FFTM processed third digital signal is then decoded and, based on the decoding of the FFTM processed third digital signal, a determination is made of whether to complete the FFTN processing of the second digital signal from the buffer.

摘要翻译： 一种用于寻呼信息的快速FFT处理的方法和相应装置，包括：接收转换为第一数字信号的模拟信号，并通过具有第一带宽（BWA）的第一滤波器进行数字滤波，以获得第二数字信号。 第二数字信号存储在缓冲器中。 第一数字信号通过具有第二带宽（BWB）的第二滤波器进一步数字滤波，以获得第三数字信号。 启动第三数字信号的FFTM处理并同时启动第二数字信号的FFTN处理。 然后对FFTM处理的第三数字信号进行解码，并且基于FFTM处理的第三数字信号的解码，确定是否从缓冲器完成第二数字信号的FFTN处理。

公开(公告)号：US20100016009A1

公开(公告)日：2010-01-21

申请号：US11721795

申请日：2005-12-19

申请人： Lenart Andersson ,  Johan Nilsson ,  Bengt Lindoff ,  Bo Bernhardsson

发明人： Lenart Andersson ,  Johan Nilsson ,  Bengt Lindoff ,  Bo Bernhardsson

IPC分类号： H04W52/04

CPC分类号： H04W52/125 ,  H04W52/08 ,  H04W52/225 ,  H04W52/24 ,  H04W52/246

摘要： A method for generating a power control command in a transceiver in a wireless communication system, where the method comprises the steps of calculating, at the beginning of a predefined time period, a quality measure reference value, generating, repeatedly during the predefined time period, an estimated quality measure value of a signal received at the transceiver; generating a power control command in dependence of the estimated quality measure value and the quality measure reference value; and generating, a number of times during the predefined time period, a modified quality measure reference value from the quality measure reference value. The step of generating the power control command comprises comparing the estimated quality measure value with the modified quality measure reference value. A power control unit, comprising a quality measure estimator, a calculator, a first controller, a second controller and an inner loop element, is configured to implement the method.

摘要翻译： 一种用于在无线通信系统中的收发器中产生功率控制命令的方法，其中所述方法包括以下步骤：在预定时间段开始时，计算质量测量参考值，在预定时间段期间重复生成， 在收发机处接收的信号的估计质量测量值; 根据估计的质量测量值和质量测量参考值产生功率控制命令; 以及在所述预定义时间段内从所述质量测量参考值生成经修改的质量测量参考值的次数。 产生功率控制命令的步骤包括将估计质量测量值与修改的质量测量参考值进行比较。 包括质量测量估计器，计算器，第一控制器，第二控制器和内环元件的功率控制单元被配置为实现该方法。

公开(公告)号：US20090258628A1

公开(公告)日：2009-10-15

申请号：US12198366

申请日：2008-08-26

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Fredrik Nordstrom

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Fredrik Nordstrom

IPC分类号： H04B1/10

CPC分类号： H04L27/0014

摘要： Methods and apparatus for automatic frequency control in wireless receivers configured to simultaneously receive multiple carrier signals at distinct radio frequencies are disclosed. An exemplary wireless device comprises at least first and second radio front-end circuits configured to receive first and second wireless communication signals transmitted via first and second radio-frequency carriers at distinct first and second radio frequencies, respectively, a control processor configured to designate a master carrier signal and a slave carrier signal from among the received wireless communication signals, and a frequency error estimation circuit configured to estimate a first receiver frequency error using the received master carrier signal. The control processor is further configured to calculate a second receiver frequency error from the first receiver frequency error, for use in compensating one or more receiver processes performed on the slave carrier signal.

摘要翻译： 公开了用于在不同射频同时接收多个载波信号的无线接收机中的自动频率控制的方法和装置。 示例性无线设备包括至少第一和第二无线电前端电路，其被配置为分别接收在不同的第一和第二无线电频率处经由第一和第二无线电频率载波发送的第一和第二无线通信信号，控制处理器被配置为指定 来自所接收的无线通信信号中的主载波信号和从载波信号;以及频率误差估计电路，被配置为使用所接收的主载波信号来估计第一接收机频率误差。 控制处理器还被配置为从第一接收机频率误差计算第二接收机频率误差，用于补偿对从属载波信号执行的一个或多个接收机处理。