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    • 2. 发明申请
    • MEASURING NOISE POWER AT WIRELESS RECEIVERS USING PILOT SYMBOL INFORMATION
    • 使用引导符号信息测量无线接收器的噪音
    • WO2007120926A3
    • 2008-06-26
    • PCT/US2007009570
    • 2007-04-19
    • BECEEM COMM INCTUJKOVIC DJORDJEXIA YINGLORENZ ROBERTMUDULODU SRIRAM
    • TUJKOVIC DJORDJEXIA YINGLORENZ ROBERTMUDULODU SRIRAM
    • H04B1/00H04B3/46H04B17/00
    • H04B17/345H04B17/26H04B2201/70701H04L25/0224H04L2025/03414H04L2025/03426
    • Embodiments are directed to a wireless receiver system that utilizes a special structure of pilot symbols used for synchronization and channel estimation in transmission packets to measure noise power at the receiver. The periodicity of the pilot signal sequences is used to extract the noise power from the received signal. Such extraction is achieved by subtracting the received signals from two pilot slots which are separated by the known periodicity of the training sequence. This method relies on the fact that desired signal and system interference signals will cancel out after the subtraction process. Measuring the power of the residual signal after subtraction represents the estimate of the noise power. Several consecutive such residual signals can be first summed up before measuring the power to improve the estimate of the noise power at the receiver. To further improve the performance, estimates of the desired signal produced by a channel estimation block can be first subtracted from each of the received signals on two pilot slots which are then to be subtracted and are separated by the known periodicity of the pilot sequence.
    • 实施例涉及一种无线接收机系统,其利用用于传输分组中的同步和信道估计的导频符号的特殊结构来测量接收机处的噪声功率。 导频信号序列的周期性用于从接收信号中提取噪声功率。 通过从由训练序列的已知周期分隔的两个导频时隙中减去接收到的信号来实现这种提取。 该方法依赖于在减法处理之后所期望的信号和系统干扰信号将被抵消的事实。 减去后测量残留信号的功率表示噪声功率的估计。 在测量功率之前可以首先总结几个连续的这样的残余信号,以改善接收机噪声功率的估计。 为了进一步提高性能,可以首先从两个导频时隙上的每个接收信号中减去由信道估计块产生的期望信号的估计值,然后被减去并且被导频序列的已知周期分隔。
    • 4. 发明申请
    • A METHOD AND SYSTEM OF A MOBILE SUBSCRIBER ESTIMATING POSITION
    • 移动订户估价位置的方法和系统
    • WO2009124283A3
    • 2010-01-07
    • PCT/US2009039530
    • 2009-04-03
    • BECEEM COMM INCLORENZ ROBERT
    • LORENZ ROBERT
    • G01S1/00G01S5/14
    • G01S19/46
    • A method and apparatus of a mobile subscriber (MS) estimating position are disclosed. One method includes the MS receiving at least one satellite transmitted signal with a first receiver, and estimating a time of arrival of the at least one satellite transmitted signal. The MS additionally receives at least one terrestrial base station signal with a second receiver, and estimates a time of arrival of the at least one terrestrial base station signal. The MS estimates its position based on the estimated time of arrival of the at least one satellite transmitted signal and the estimated time of arrival of the at least one terrestrial base station signal.
    • 公开了一种移动用户(MS)估计位置的方法和装置。 一种方法包括MS接收具有第一接收机的至少一个卫星发射信号,以及估计至少一个卫星发射信号的到达时间。 MS另外用第二接收机接收至少一个地面基站信号,并且估计至少一个地面基站信号的到达时间。 MS基于至少一个卫星发送信号的估计到达时间和至少一个地面基站信号的估计到达时间来估计其位置。
    • 5. 发明申请
    • VARIABLE MAGNETIC FLUX-TYPE ROTARY ELECTRIC MACHINE
    • 可变磁通型旋转电机
    • WO2014003730A8
    • 2014-12-04
    • PCT/US2012044262
    • 2012-06-26
    • NISSAN MOTORWISCONSIN ALUMNI RES FOUNDKATO TAKASHILORENZ ROBERTLIMSUWAN NATEE
    • KATO TAKASHILORENZ ROBERTLIMSUWAN NATEE
    • H02K1/27
    • H02K1/276H02K1/2766H02K1/2773
    • A variable magnetic flux-type rotary electric machine includes a stator (11) and a rotor (12). The stator (1 1) includes a stator coil (C) wound on teeth. The rotor (12) defines an air gap between the rotor (12) and the stator (1 1). The rotor (12) has at least one permanent magnet (m) arranged in the d-axis magnetic path. The stator (11) and the rotor (12) are arranged relative to the permanent magnet (m) to set a characteristic of d(Kt(I))/dI ≥ 0 in a range of at or below magnetic saturation of a core material of at least one of the stator (11) and the rotor (12), where KT represents a torque constant, and I represents an applied current, and a function of KT with respect to I is represented by KT = Kt(I) for a torque Tr acting on the rotor (12) that is represented by Tr = KT x I.
    • 可变磁通型旋转电机包括定子(11)和转子(12)。 定子(11)包括缠绕在齿上的定子线圈(C)。 转子(12)限定了转子(12)和定子(11)之间的气隙。 转子(12)具有布置在d轴磁路中的至少一个永磁体(m)。 定子(11)和转子(12)相对于永磁体(m)布置,以在芯材的等于或低于磁饱和度的范围内设定d(Kt(I))/dI≥0的特性 定子(11)和转子(12)中的至少一个,其中KT表示转矩常数,I表示施加的电流,KT相对于I的函数由KT = Kt(I)表示,用于 作用在由Tr = KT×I表示的转子(12)上的扭矩Tr
    • 7. 发明申请
    • USING MULTIPLE DETECTION ALGORITHMS IN POSITIONING SIGNAL PROCESSING
    • 在定位信号处理中使用多个检测算法
    • WO2004065980B1
    • 2004-10-28
    • PCT/US2004001210
    • 2004-01-16
    • SIRF TECH INCBASCH JULIENCHOU ANDREWLORENZ ROBERTSTONE JESSE
    • BASCH JULIENCHOU ANDREWLORENZ ROBERTSTONE JESSE
    • G01S1/00
    • G01S19/28G01S19/235
    • A systematic method for acquiring positioning signals, such as global positioning system (GPS) signals, uses different signal detection algorithms at different stages of signal detection. For example, a method for detecting multiple positioning signals may include first detecting a first positioning signal using a robust but less sensitive signal detection method, such as non-coherent integration. Based on the signal parameter values that allow detection of the first positional signal, detecting a second positioning signal using a more sensitive method, such as coherent integration. In this manner, by capturing the strongest signal first using a robust method, signal detection parameter values common to positioning signals can be narrowed to allow subsequent signal acquisitions using a more sensitive -- but computationally more intensive -- method.
    • 用于获取定位信号的系统方法,如全球定位系统(GPS)信号,在信号检测的不同阶段使用不同的信号检测算法。 例如,用于检测多个定位信号的方法可以包括首先使用鲁棒但不太灵敏的信号检测方法来检测第一定位信号,例如非相干积分。 基于允许检测第一位置信号的信号参数值,使用诸如相干积分的更敏感的方法来检测第二定位信号。 以这种方式,通过使用鲁棒的方法首先捕获最强的信号,可以缩小定位信号共同的信号检测参数值,以便使用更敏感但是计算上更密集的方法来进行随后的信号采集。