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    • 1. 发明申请
    • Channel estimation by adaptive interpolation
    • 通过自适应插值的信道估计
    • US20050105647A1
    • 2005-05-19
    • US10920928
    • 2004-08-18
    • Leif WilhelmssonBo BernhardssonLennart Andersson
    • Leif WilhelmssonBo BernhardssonLennart Andersson
    • H04L25/02H04L27/26H03K9/00
    • H04L25/0234H04L5/0048H04L25/022H04L25/0222H04L27/2647
    • 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.
    • 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。
    • 2. 发明授权
    • Channel estimation by adaptive interpolation
    • 通过自适应插值的信道估计
    • US07433433B2
    • 2008-10-07
    • US10920928
    • 2004-08-18
    • Leif WilhelmssonBo BernhardssonLennart Andersson
    • Leif WilhelmssonBo BernhardssonLennart Andersson
    • H04B1/10
    • H04L25/0234H04L5/0048H04L25/022H04L25/0222H04L27/2647
    • 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.
    • 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。
    • 3. 发明授权
    • 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
    • US08036694B2
    • 2011-10-11
    • US11721795
    • 2005-12-19
    • Lennart AnderssonJohan NilssonBengt LindoffBo Bernhardsson
    • Lennart AnderssonJohan NilssonBengt LindoffBo Bernhardsson
    • H04B7/00
    • 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。
    • 7. 发明授权
    • Engine-driven vehicle with exhaust emission control
    • 具有废气排放控制的发动机驱动车辆
    • US07877984B2
    • 2011-02-01
    • US11577199
    • 2005-10-12
    • Andreas HinzLennart Andersson
    • Andreas HinzLennart Andersson
    • F01N3/00
    • F01N3/206B01D53/9431B01D2251/208F01N3/035F01N3/0835F01N3/106F01N13/009F01N13/0097F01N2570/14F01N2610/03F02D41/025F02D41/405Y02A50/2322Y02T10/26Y02T10/44
    • A method and an arrangement are provided for maintaining the oxidation of NO to NO2 in an oxidation catalytic converter arranged in a vehicle, the vehicle including an internal combustion engine which in operation emits exhaust gases to an exhaust gas after treatment system including the oxidation catalytic converter. A predetermined quantity of hydrocarbon is delivered to the exhaust gas aftertreatment system or the engine over at least one predetermined time interval for the purpose of maintaining the working temperature or regenerating an exhaust gas aftertreatment unit. The quantity of hydrocarbon is delivered to the exhaust gas aftertreatment system or to the engine through an injection with at least one predetermined fragmentation frequency and an injection period in order to maintain an NO2 production in the exhaust gas aftertreatment system that prevailed immediately prior to said time interval for the hydrocarbon injection.
    • 提供了一种在布置在车辆中的氧化催化转化器中维持NO至NO2的氧化的方法和装置,该车辆包括内燃机,该内燃机在运行时将废气排放到包括氧化催化转化器 。 为了维持工作温度或再生废气后处理单元,将预定量的烃输送到排气后处理系统或发动机至少一个预定的时间间隔。 碳氢化合物的量通过具有至少一个预定的分段频率和喷射周期的喷射被输送到废气后处理系统或发动机,以便在紧接在所述时间之前的排气后处理系统中保持NO 2产生 烃注入间隔。
    • 9. 发明申请
    • HS-PDSCH BLIND DECODING
    • HS-PDSCH BLIND解码
    • US20090003301A1
    • 2009-01-01
    • US11952002
    • 2007-12-06
    • Andres ReialLennart Andersson
    • Andres ReialLennart Andersson
    • H04B7/216
    • H04L1/0038H04L1/0046H04L1/1812H04L1/1829
    • The number of blind decoding operations in a wireless communication receiver is reduced. In one embodiment, a candidate set of transport formats is formed by eliminating one or more allowed transport formats, thus reducing the number of decode operations to be performed. In another embodiment, a received data transmission is partially decoded according to each of a plurality of transport formats, and decode quality metrics associated with each transport format are inspected. Only the transport formats yielding sufficiently high quality metrics are utilized to fully decode the transmission. In other embodiments, upon failure to successfully decode a received transmission, it is assumed to be a retransmission with a missed control transmission, and one or more transport formats specifying the position of a previous transmission in a buffer are added to the candidate set of transport formats. The received retransmission and previously received transmission are then HARQ combined and decoded.
    • 减少无线通信接收机中的盲解码操作的数量。 在一个实施例中,通过消除一个或多个允许的传输格式来形成候选传输格式集合,从而减少要执行的解码操作的数量。 在另一个实施例中,根据多种传输格式中的每一种对接收到的数据传输进行部分解码,并检查与每种传输格式相关联的解码质量度量。 仅使用产生足够高的质量度量的传输格式来完全解码传输。 在其他实施例中,在成功解码所接收的传输失败之后,假定是具有错过控制传输的重传,并且将指定缓冲器中的先前传输的位置的一个或多个传输格式添加到候选传输组 格式。 接收到的重传和先前接收的传输然后进行HARQ组合和解码。