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    • 12. 发明申请
    • Determinting a Detection Signal in a Spread Spectrum Communications System
    • 在扩频通信系统中确定检测信号
    • US20080212654A1
    • 2008-09-04
    • US11908935
    • 2006-03-07
    • Johan NilssonBo BernhardssonBengt Lindoff
    • Johan NilssonBo BernhardssonBengt Lindoff
    • H04B1/707
    • H04J13/0048H04B1/7075H04B1/7077H04B2201/70701H04J13/18
    • Disclosed is a method of generating a detection signal for detecting energy in a spread-spectrum signal, comprising: de-spreading the spread-spectrum signal by applying a predetermined spreading code to obtain a sequence of de-spread signal symbols (202A-202D); accumulating a number of said signal symbols to obtain a single detection signal. The accumulation includes: obtaining a first and a second subset of said de-spread signal symbols, wherein the symbols of the first subset have values that are known to the receiver or at least known to be the same for all symbols of the first subset, and wherein the symbols of the second subset have unknown values; coherently accumulating the symbols of the first subset to obtain a first partial detection signal (203A, 203B, 203C); non-coherently accumulating the symbols of the second subset to obtain a second partial detection signal (204A, 204B, 204C); and combining the first and second partial detection signals to obtain the single detection signal (208).
    • 公开了一种生成用于检测扩频信号中的能量的检测信号的方法,包括:通过施加预定的扩展码对扩展频谱信号进行解扩,以获得解扩信号符号序列(202A-202 D); 累积多个所述信号符号以获得单个检测信号。 积累包括:获得所述去扩展信号符号的第一和第二子集,其中第一子集的符号具有接收器已知的或至少已知对于第一子集的所有符号是相同的值, 并且其中所述第二子集的符号具有未知值; 相干地累积第一子集的符号以获得第一部分检测信号(203A,203B,203C); 非相干地累积第二子集的符号以获得第二部分检测信号(204A,204B,204C); 以及组合所述第一和第二部分检测信号以获得所述单个检测信号(208)。
    • 13. 发明授权
    • Methods, receivers, and computer program products for determining transmission power control commands using biased interpretation
    • 方法,接收器和计算机程序产品,用于使用偏倚的解释来确定传输功率控制命令
    • US07184791B2
    • 2007-02-27
    • US10445759
    • 2003-05-27
    • Johan NilssonElias JonssonBo BernhardssonBengt Lindoff
    • Johan NilssonElias JonssonBo BernhardssonBengt Lindoff
    • H04B7/00H04Q7/20
    • H04W52/56H04W52/40
    • Methods, receivers, and computer program products for defining asymmetric decision regions of a symbol space to interpret transmitted power control commands are disclosed. A method of determining transmitted power control commands at a receiver can include defining a first decision region of a symbol space associated with a first power control command at the receiver and a second decision region of the symbol space associated with a second power control command at the receiver where the first and second regions are asymmetric with one another. Methods of determining a transmitted power control command during soft handover mode in a wideband code division multiple access communications system are also discussed wherein a first determination of a combined power control command received from a plurality of transmitters can be combined with a second determination of the combined power control command received from the plurality of transmitters to provide a combined power control command. Related circuits are disclosed as well.
    • 公开了用于定义符号空间的不对称决定区域以解释发射功率控制命令的方法,接收机和计算机程序产品。 在接收机处确定发射功率控制命令的方法可以包括定义与接收机处的第一功率控制命令相关联的符号空间的第一判定区域和与第二功率控制命令相关联的符号空间的第二判定区域 接收器,其中第一和第二区域彼此不对称。 还讨论了在宽带码分多址通信系统中在软切换模式期间确定发射功率控制命令的方法,其中从多个发射机接收的组合功率控制命令的第一确定可以与组合的第二确定相结合 功率控制命令从多个发射机接收以提供组合的功率控制命令。 也公开了相关电路。
    • 17. 发明申请
    • Micro-Sleep Techniques in LTE Receivers
    • LTE接收机中的微睡眠技术
    • US20110176466A1
    • 2011-07-21
    • US12719359
    • 2010-03-08
    • Bengt LindoffBo Bernhardsson
    • Bengt LindoffBo Bernhardsson
    • H04W52/02H04L27/00
    • H04W52/0238H04L5/0007H04L25/0224H04W52/0225Y02D70/1262Y02D70/146Y02D70/23Y02D70/24
    • 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.
    • 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。
    • 18. 发明申请
    • METHOD AND DEVICE FOR POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中功率控制的方法和装置
    • US20100016009A1
    • 2010-01-21
    • US11721795
    • 2005-12-19
    • Lenart AnderssonJohan NilssonBengt LindoffBo Bernhardsson
    • Lenart AnderssonJohan NilssonBengt LindoffBo Bernhardsson
    • H04W52/04
    • H04W52/125H04W52/08H04W52/225H04W52/24H04W52/246
    • 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.
    • 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。
    • 19. 发明申请
    • Time-Error and Frequency-Error Correction in a Multi-Carrier Wireless Communications System
    • 多载波无线通信系统中的时间误差和频率误差校正
    • US20090258628A1
    • 2009-10-15
    • US12198366
    • 2008-08-26
    • Bengt LindoffBo BernhardssonFredrik Nordstrom
    • Bengt LindoffBo BernhardssonFredrik Nordstrom
    • H04B1/10
    • H04L27/0014
    • 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.
    • 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。
    • 20. 发明申请
    • Simplified generalized rake receiver method and apparatus
    • 简化的广义Rake接收机的方法和装置
    • US20070116100A1
    • 2007-05-24
    • US11412543
    • 2006-04-27
    • Bengt LindoffBo BernhardssonJonas Ohlsson
    • Bengt LindoffBo BernhardssonJonas Ohlsson
    • H04B1/00
    • H04B1/712H04B2201/7071H04B2201/709727
    • According to a method and apparatus taught herein, a Rake receiver circuit selectively operates with or without colored interference compensation, in dependence on current operating conditions. For example, in one embodiment the Rake receiver circuit comprises one or more processing circuits that are configured to generate Rake combining weights in a first mode of operation as first combining weights calculated from channel estimates corresponding to a set of Rake signal fingers. In a second mode, the processing circuit(s) generate the Rake combining weights as compensated combining weights obtained by compensating the first combining weights with second combining weights calculated from colored interference estimates corresponding to a set of Rake probing fingers.
    • 根据本文教导的方法和装置,Rake接收器电路根据当前的操作条件选择性地在有或没有有色干涉补偿的情况下操作。 例如,在一个实施例中,Rake接收机电路包括一个或多个处理电路,其被配置为以第一操作模式生成Rake组合权重作为从对应于一组Rake信号指的信道估计计算的第一组合权重。 在第二模式中,处理电路产生Rake组合权重作为通过用对应于一组耙探测手指的有色干涉估计计算的第二组合权重来补偿第一组合权重而获得的补偿组合权重。