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    • 54. 发明授权
    • Apparatus and methods for signal recovery in a digital communication
system
    • 数字通信系统中信号恢复的装置和方法
    • US5841817A
    • 1998-11-24
    • US549565
    • 1995-10-27
    • Abraham KriegerMark Kent
    • Abraham KriegerMark Kent
    • H04L1/00H04L27/22H03D1/00
    • H04L1/0059H04L27/22
    • The present invention provides an apparatus and method for signal recovery from noisy observation in digital communication systems, utilizing a forward estimator and data smoother which improves the quality of the estimates of the transmitted signal. The present invention also provides an apparatus and method for the application of the forward estimator to the recovery of a digital data stream modulated with a CPM waveform, through the use of a receiver for GMSK demodulation. The digital data is first processed using the Forward Estimation process which calculates the probability that a symbol is in particular states. Bit decision is then applied, followed by scaling. The present invention further provides an apparatus and method for the application of the forward estimator and data smoother to the decoding of digital data which has been encoded with a Convolutional code. The digital data is first processed using the Forward Estimation procedure and then smoothed and scaled. Bit decision is then applied.
    • 本发明提供了一种利用正向估计器和数据平滑器在数字通信系统中的噪声观测信号恢复的装置和方法,其提高了所发射信号估计的质量。 本发明还提供了一种用于通过使用用于GMSK解调的接收机将前向估计器应用于用CPM波形调制的数字数据流的恢复的装置和方法。 首先使用前向估计过程来处理数字数据,该过程计算符号处于特定状态的概率。 然后应用位决定,然后进行缩放。 本发明还提供了一种用于将前向估计器和数据平滑器应用于已经用卷积码编码的数字数据的解码的装置和方法。 首先使用前向估计程序处理数字数据,然后进行平滑和缩放。 然后应用位决定。
    • 57. 发明授权
    • Method and system for automatically rescaling an accumulation buffer in synchronization systems
    • 在同步系统中自动重新调整累加缓冲区的方法和系统
    • US08917704B2
    • 2014-12-23
    • US12768415
    • 2010-04-27
    • Francis SwartsMark Kent
    • Francis SwartsMark Kent
    • H04J3/00H04L27/26H04L7/04H04L5/00
    • H04L7/042H04L5/0048H04L27/2662H04L27/2668
    • A mobile device accumulates energy associated with each of successive PSS transmissions received from a base station. Accumulated energy values may be rescaled by a same number of bits whenever a buffer overflow condition occurs within the accumulation buffer. The mobile device may detect a correct PSS timing hypothesis utilizing the rescaled accumulated energy values within the accumulation buffer. A significant bit such as, for example, the most significant bit (MSB) or one of lesser significant bits, of each of the accumulated energy values may be monitored during the energy accumulation process to detect a buffer overflow condition. The mobile device may determine number of bits for rescaling or right shift each of the accumulated energy values in response to the detected buffer overflow condition. The resulting shifted accumulated energy values may be utilized for PSS detection. Either an integrating or filtering method is utilized during the energy accumulation process.
    • 移动设备累积与从基站接收的每个连续PSS传输相关联的能量。 每当缓冲区溢出条件发生在累加缓冲区内时,累加的能量值可以被相同数量的位重新定标。 移动设备可以使用累积缓冲器内的重新标定的累积能量值来检测正确的PSS定时假设。 可以在能量累积过程期间监视每个累积能量值的诸如例如最高有效位(MSB)或较低有效位之一的有效位以检测缓冲器溢出状况。 响应于检测到的缓冲器溢出条件,移动设备可以确定用于重新缩放的位数或者对每个累积的能量值进行右移。 所得到的移位累积能量值可用于PSS检测。 在能量积累过程中使用积分或滤波方法。
    • 58. 发明授权
    • Method and system for rate reduction pre-coding matrices
    • 速率降低预编码矩阵的方法和系统
    • US08687715B2
    • 2014-04-01
    • US11847683
    • 2007-08-30
    • Mark KentVinko ErcegJun ZhengUri Landau
    • Mark KentVinko ErcegJun ZhengUri Landau
    • H04L27/28
    • H04L25/03343H04L25/0204H04L25/0222H04L25/0248H04L2025/03426H04L2025/03808
    • Aspects of a method and system for a delta quantizer for rate reduction pre-coding matrices may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook and generating a pre-coding matrix based on at least the channel state information. The channel state information may be a matrix V and one or more associated singular values. The matrix V may be generated using Singular Value Decomposition (SVD) or Geometric Mean Decomposition (GMD). One or more columns of the matrix V may be selected based on the one or more associated singular values and may be combined to enable the generation of the pre-coding matrix. The codebook may comprise one or more unitary matrices. An index of an element of the codebook, onto which the change in channel state information is quantized, may be transmitted from a receiver to a transmitter.
    • 用于速率降低预编码矩阵的delta量化器的方法和系统的方面可以包括将MIMO预编码系统中的信道状态信息的变化量化到码本上,并且至少基于信道状态生成预编码矩阵 信息。 信道状态信息可以是矩阵V和一个或多个相关联的奇异值。 矩阵V可以使用奇异值分解(SVD)或几何平均分解(GMD)来生成。 可以基于一个或多个相关联的奇异值来选择矩阵V的一个或多个列,并且可以组合以使得能够生成预编码矩阵。 码本可以包括一个或多个酉矩阵。 信道状态信息的变化被量化的码本的元素的索引可以从接收器发送到发送器。
    • 59. 发明申请
    • METHOD AND SYSTEM FOR INSTALLATION AND CONFIGURATION OF A FEMTOCELL
    • 用于安装和配置FEMTOCELL的方法和系统
    • US20140024359A1
    • 2014-01-23
    • US14035500
    • 2013-09-24
    • Mark KentCharles AbrahamXuemin (Sherman) ChenWael William DiabVinko ErcegVictor T. HouJeyhan Karaoguz
    • Mark KentCharles AbrahamXuemin (Sherman) ChenWael William DiabVinko ErcegVictor T. HouJeyhan Karaoguz
    • H04W8/22
    • H04W8/22H04W28/18H04W84/045
    • Aspects of a method and system for installation and configuration of a femtocell are provided. In this regard, information for configuring a femtocell to operate in a specified location may be received by the femtocell and may be utilized to configure one or more parameters of the femtocell. Once the femtocell is operational the parameters may be updated and/or optimized based on one or both of characterizations of cellular signals and/or information received from a femtocell registry. In this manner the femtocell may be reconfigured utilizing the updated and/or optimized parameters. The one or more parameters may be configured based on attributes of the location in which the femtocell is to operate. The one or more parameters may be configured based on a location, number, and/or coverage area of other femtocells The parameters may comprise one or more of power levels, frequency of operation, and/or antenna beam pattern.
    • 提供了一种用于安装和配置毫微微蜂窝基站的方法和系统。 在这方面,用于配置在特定位置操作的毫微微小区的信息可以由毫微微小区接收,并且可以用于配置毫微微小区的一个或多个参数。 一旦毫微微蜂窝基站可操作,可以基于从毫微微小区注册表接收的蜂窝信号和/或信息的一个或两个表征来更新和/或优化参数。 以这种方式,可以使用更新和/或优化的参数来重新配置毫微微小区。 可以基于毫微微蜂窝基站要运行的位置的属性来配置一个或多个参数。 可以基于其他毫微微小区的位置,数量和/或覆盖区域来配置一个或多个参数。参数可以包括功率电平,操作频率和/或天线波束图案中的一个或多个。
    • 60. 发明授权
    • Method and system for efficient full resolution correlation
    • 高效全分辨率相关的方法和系统
    • US08583716B2
    • 2013-11-12
    • US11965300
    • 2007-12-27
    • Francis SwartsMark Kent
    • Francis SwartsMark Kent
    • G06F17/10
    • G06F17/15H04B2001/71563
    • Aspects of a method and system for efficient full resolution correlation may include correlating a first signal with a second signal at a rate corresponding to a first discrete signal, wherein each sample of the first signal may be generated by summing a plurality of consecutive samples from the first discrete signal, and the second signal may be generated by summing the plurality of consecutive samples from a second discrete signal. The correlating may be performed by a matched filter and/or a correlator. The first signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the first discrete signal comprising N*L samples. The second signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the second discrete signal comprising N*L samples. The first signal and the second signal may be correlated by multiplying the N samples of the first signal with the N samples of the second signal in N multipliers and summing a plurality of outputs of the multipliers. A maximum of the correlating may be determined to achieve synchronization between the first discrete signal and the second discrete signal.
    • 用于有效全分辨率相关的方法和系统的方面可以包括以对应于第一离散信号的速率将第一信号与第二信号相关联,其中第一信号的每个采样可以通过将来自 第一离散信号,并且第二信号可以通过从第二离散信号求和多个连续采样来产生。 相关可以由匹配滤波器和/或相关器执行。 包括N个样本的第一信号可以通过从包括N * L个样本的第一离散信号中对每个N个采样的L个连续样本求和来生成。 包括N个样本的第二信号可以通过从包括N * L个样本的第二离散信号中对N个样本中的每一个求和L个连续样本来生成。 第一信号和第二信号可以通过将第一信号的N个采样与N个乘法器中的第二信号的N个采样相乘并对乘法器的多个输出求和来相关。 可以确定相关的最大值以实现第一离散信号和第二离散信号之间的同步。